NOAA PolarWatch ERDDAP
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griddap Subset tabledap Make A Graph wms files Accessible Title Summary FGDC ISO 19115 Info Background Info RSS Email Institution Dataset ID
https://polarwatch.noaa.gov/erddap/griddap/noaacwSARciceclassnpoleDaily https://polarwatch.noaa.gov/erddap/griddap/noaacwSARciceclassnpoleDaily.graph https://polarwatch.noaa.gov/erddap/files/noaacwSARciceclassnpoleDaily/ public Ice Classification, Metop-C Advanced SCATterometer (ASCAT), 4km, North Pole (Arctic), Daily The ASCAT Ice Classification system takes Enhanced Resolution (4.5 km x 4.5 km) ASCAT Normalized Radar Cross Section (NRCS) and in a two-step process creates an Ice Classification mask with 3 classes (seasonal, perennial, mixed). Primary Input data Enhanced Resolution (4.5 km x 4.5 km) ASCAT Normalized Radar Cross Section (NRCS) created by the Scatterometer Image Reconstruction (SIR) algorithm. Developed by David Long at BYU. National Ice Center's 4 km Interactive Snow and Ice Mask (IMS). Warning: Microwave-based ASCAT sea ice classification may not be reliable during Northern summer months or melt periods (approximately May to September) because melting snow and ice have a distinct microwave radar return that may prevent accurate identification of ice type.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][altitude][rows][cols]):\nIceClass\n https://polarwatch.noaa.gov/erddap/info/noaacwSARciceclassnpoleDaily/index.htmlTable https://coastwatch.noaa.gov/ (external link) https://polarwatch.noaa.gov/erddap/rss/noaacwSARciceclassnpoleDaily.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=noaacwSARciceclassnpoleDaily&showErrors=false&email= USDOC/NOAA/NESDIS PolarWatch noaacwSARciceclassnpoleDaily
https://polarwatch.noaa.gov/erddap/griddap/noaacwAMSR2gw1IceConcDailySP06 https://polarwatch.noaa.gov/erddap/griddap/noaacwAMSR2gw1IceConcDailySP06.graph public Ice Concentration, Daily, GCOM-W1 AMSR2, Antarctic, 10km, NRT, Past 3 Weeks This dataset is a level 3, daily, 10km, polar stereographic mapped composite of sea ice concentration using data from the GCOM-1 satellite AMSR-2 microwave sensor.\n            These L3 composites are generated from level 2 data provided by NOAA OSPO; NOGAPS algorithm developed by NOAA STAR (Paul Chang, Lead).\n            NOAA CoastWatch obtains L2 from OSPO and generates a L3 daily merged (composite) and maps to polar stereographic projection for routine distribution.\n            The OSPO/STAR L2 product uses the GCOM-W1 AMSR-2 Algorithm Software Processor (GAASP) which takes the full orbital JAXA L1B data via NASA, applies brightness temperature bias corrections, assigns an RFI flag, performs internal reformatting, and then generates L2 products from the NOAA Operational GCOM-W1 AMSR-2 Products System Algorithm (NOGAPS).\n            Platform/Sensor Details: The second Advanced Microwave Scanning Radiometer 2 (AMSR-2) on JAXA's Global Climate Observation Mission - Water 1 (GCOM-W1).\n            Temporal coverage: Daily composites and 4-day rolling merge composites are produced daily with a latency of 12-24 hours.\n            The composites have a 10 km spatial resolution and are mapped to Polar Stereographic projections for South Pole. The AMSR-2 Microwave sensor is not impacted by clouds and serves as a full coverage dataset that supplements the NOAA VIIRS infra-red 750m data.\n            This L3 dataset is originally served on the STAR THREDDS server, PolarWatch connects to the dataset via the STAR ERDDAP server.\n            For more information on the dataset and access servers visit: https://coastwatch.noaa.gov/cw/satellite-data-products/sea-ice.html (external link).\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][altitude][rows][cols]):\nIceConc (NASA Team 2 Ice Concentration (Fraction), 1)\nFlags (Quality Flags, 1)\ngraphics (graphics overlay planes)\n https://polarwatch.noaa.gov/erddap/info/noaacwAMSR2gw1IceConcDailySP06/index.htmlTable https://www.star.nesdis.noaa.gov/thredds/dodsC/AMSR2gw1IceConcDailyAggSP06.html (external link) https://polarwatch.noaa.gov/erddap/rss/noaacwAMSR2gw1IceConcDailySP06.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=noaacwAMSR2gw1IceConcDailySP06&showErrors=false&email= DOC/NOAA/NESDIS/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA noaacwAMSR2gw1IceConcDailySP06
https://polarwatch.noaa.gov/erddap/griddap/noaacwAMSR2gw1IceConcDailyNP06 https://polarwatch.noaa.gov/erddap/griddap/noaacwAMSR2gw1IceConcDailyNP06.graph public Ice Concentration, Daily, GCOM-W1 AMSR2, Arctic, 10km, NRT, Past 3 Weeks This dataset is a level 3, daily, 10km, polar stereographic mapped composite of sea ice concentration using data from the GCOM-1 satellite AMSR-2 microwave sensor.\n            These L3 composites are generated from level 2 data provided by NOAA OSPO; NOGAPS algorithm developed by NOAA STAR (Paul Chang, Lead).\n            NOAA CoastWatch obtains L2 from OSPO and generates a L3 daily merged (composite) and maps to polar stereographic projection for routine distribution.\n            The OSPO/STAR L2 product uses the GCOM-W1 AMSR-2 Algorithm Software Processor (GAASP) which takes the full orbital JAXA L1B data via NASA, applies brightness temperature bias corrections, assigns an RFI flag, performs internal reformatting, and then generates L2 products from the NOAA Operational GCOM-W1 AMSR-2 Products System Algorithm (NOGAPS).\n            Platform/Sensor Details: The second Advanced Microwave Scanning Radiometer 2 (AMSR-2) on JAXA's Global Climate Observation Mission - Water 1 (GCOM-W1).\n            Temporal coverage: Daily composites and 4-day rolling merge composites are produced daily with a latency of 12-24 hours.\n            The composites have a 10 km spatial resolution and are mapped to Polar Stereographic projections for North Pole. The AMSR-2 Microwave sensor is not impacted by clouds and serves as a full coverage dataset that supplements the NOAA VIIRS infra-red 750m data.\n            This L3 dataset is originally served on the STAR THREDDS server, PolarWatch connects to the dataset via the STAR ERDDAP server.\n            For more information on the dataset and access servers visit: https://coastwatch.noaa.gov/cw/satellite-data-products/sea-ice.html (external link).\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][altitude][rows][cols]):\nIceConc (NASA Team 2 Ice Concentration (Fraction) - primary product, 1)\nFlags (Quality Flags, 1)\ngraphics (graphics overlay planes)\n https://polarwatch.noaa.gov/erddap/info/noaacwAMSR2gw1IceConcDailyNP06/index.htmlTable https://coastwatch.noaa.gov/cw/satellite-data-products/sea-ice.html (external link) https://polarwatch.noaa.gov/erddap/rss/noaacwAMSR2gw1IceConcDailyNP06.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=noaacwAMSR2gw1IceConcDailyNP06&showErrors=false&email= DOC/NOAA/NESDIS/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA noaacwAMSR2gw1IceConcDailyNP06
https://polarwatch.noaa.gov/erddap/griddap/noaacwVIIRSn20iceconcSP06Daily https://polarwatch.noaa.gov/erddap/griddap/noaacwVIIRSn20iceconcSP06Daily.graph public Ice Concentration, NOAA-20 VIIRS, Near Real-Time, Polar Stereographic (South), Antarctic, 750m, Daily, Past 3 Weeks Enterprise Ice Concentration/ Ice Mask/ Ice Surface Temperature Products\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][altitude][rows][cols]):\nIceConc (Ice Concentration, 1)\n https://polarwatch.noaa.gov/erddap/info/noaacwVIIRSn20iceconcSP06Daily/index.htmlTable https://coastwatch.noaa.gov/cw/satellite-data-products/sea-ice/viirs-sea-ice-concentration-ice-thickness-ice-surface-temperature.html (external link) https://polarwatch.noaa.gov/erddap/rss/noaacwVIIRSn20iceconcSP06Daily.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=noaacwVIIRSn20iceconcSP06Daily&showErrors=false&email= NOAA NESDIS CoastWatch noaacwVIIRSn20iceconcSP06Daily
https://polarwatch.noaa.gov/erddap/tabledap/usnic_weekly_iceberg.subset https://polarwatch.noaa.gov/erddap/tabledap/usnic_weekly_iceberg https://polarwatch.noaa.gov/erddap/tabledap/usnic_weekly_iceberg.graph https://polarwatch.noaa.gov/erddap/files/usnic_weekly_iceberg/ public Iceberg Locations from USNIC, Antarctic, 2014 to Present, Weekly U.S. National Ice Center (USNIC) is the global entity that names, tracks, and documents Antarctic icebergs that meet the criteria of 20 sqNM or greater, or 10 NM on its longest axis. Data are available from Nov 2014 to present and are updated weekly.\n\ncdm_data_type = Point\nVARIABLES:\nIceberg\nlength_nm\nwidth_nm\nlatitude (degrees_north)\nlongitude (degrees_east)\nRemarks\ntime (Iso Date, seconds since 1970-01-01T00:00:00Z)\n https://polarwatch.noaa.gov/erddap/metadata/fgdc/xml/usnic_weekly_iceberg_fgdc.xml https://polarwatch.noaa.gov/erddap/metadata/iso19115/xml/usnic_weekly_iceberg_iso19115.xml https://polarwatch.noaa.gov/erddap/info/usnic_weekly_iceberg/index.htmlTable https://usicecenter.gov/Products/AntarcIcebergs (external link) https://polarwatch.noaa.gov/erddap/rss/usnic_weekly_iceberg.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=usnic_weekly_iceberg&showErrors=false&email= USNIC usnic_weekly_iceberg
https://polarwatch.noaa.gov/erddap/griddap/noaacwVIIRSn20icethickNP06Daily4Day_pw https://polarwatch.noaa.gov/erddap/griddap/noaacwVIIRSn20icethickNP06Daily4Day_pw.graph https://polarwatch.noaa.gov/erddap/files/noaacwVIIRSn20icethickNP06Daily4Day_pw/ public Latest Baseline of IceThickness from NOAA-20 VIIRS Latest Baseline of IceThickness from NOAA-20 Visible and Infrared Imager/Radiometer Suite (VIIRS)\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][altitude][rows][cols]):\nIceThickness (Ice thickness, meter)\ngraphics (graphics overlay planes)\n https://polarwatch.noaa.gov/erddap/info/noaacwVIIRSn20icethickNP06Daily4Day_pw/index.htmlTable https://coastwatch.noaa.gov (external link) https://polarwatch.noaa.gov/erddap/rss/noaacwVIIRSn20icethickNP06Daily4Day_pw.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=noaacwVIIRSn20icethickNP06Daily4Day_pw&showErrors=false&email= NOAA/NESDIS/STAR/SOCD noaacwVIIRSn20icethickNP06Daily4Day_pw
https://polarwatch.noaa.gov/erddap/griddap/jplMURSST41 https://polarwatch.noaa.gov/erddap/griddap/jplMURSST41.graph https://polarwatch.noaa.gov/erddap/wms/jplMURSST41/request https://polarwatch.noaa.gov/erddap/files/jplMURSST41/ public Multi-scale Ultra-high Resolution (MUR) SST Analysis fv04.1, Global, 0.01°, 2002-present, Daily This is a merged, multi-sensor L4 Foundation Sea Surface Temperature (SST) analysis product from Jet Propulsion Laboratory (JPL). This daily, global, Multi-scale, Ultra-high Resolution (MUR) Sea Surface Temperature (SST) 1-km data set, Version 4.1, is produced at JPL under the NASA MEaSUREs program. For details, see https://podaac.jpl.nasa.gov/dataset/MUR-JPL-L4-GLOB-v4.1 (external link) . This dataset is part of the Group for High-Resolution Sea Surface Temperature (GHRSST) project. The data for the most recent 7 days is usually revised everyday.  The data for other days is sometimes revised.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][latitude][longitude]):\nanalysed_sst (Analysed Sea Surface Temperature, degree_C)\nanalysis_error (Estimated Error Standard Deviation of analysed_sst, degree_C)\nmask (Sea/Land Field Composite Mask)\nsea_ice_fraction (Sea Ice Area Fraction, 1)\n https://polarwatch.noaa.gov/erddap/metadata/fgdc/xml/jplMURSST41_fgdc.xml https://polarwatch.noaa.gov/erddap/metadata/iso19115/xml/jplMURSST41_iso19115.xml https://polarwatch.noaa.gov/erddap/info/jplMURSST41/index.htmlTable https://podaac.jpl.nasa.gov/dataset/MUR-JPL-L4-GLOB-v4.1 (external link) https://polarwatch.noaa.gov/erddap/rss/jplMURSST41.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=jplMURSST41&showErrors=false&email= NASA JPL jplMURSST41
https://polarwatch.noaa.gov/erddap/griddap/noaacwSARnrcsnpoleDaily https://polarwatch.noaa.gov/erddap/griddap/noaacwSARnrcsnpoleDaily.graph https://polarwatch.noaa.gov/erddap/files/noaacwSARnrcsnpoleDaily/ public Normalized Radar Cross Section, SAR Composite, Near Real-Time, 1km, North Pole, Daily This file contains a composite of Synthetic Aperture Radar (SAR) Normalized Radar Cross Section (NRCS) images covering the Arctic for a period of one day. The files are produced in SAROPS (SAR Operational Product System) by the Water Surface Conditions/Sea Surface Roughness group within the NOAA STAR Satellite Oceanography and Climatology Division. Data from the following C-Band SAR systems are included: Sentinel-1A/B, RADARSAT-2, and RADARSAT Constellation Mission. NRCS values have been calibrated with values given by the SAR data provider. Daily coverage may vary due to limitations in data availability.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][level][y][x]):\nNRCS (Normalized Radar Cross Section, 1)\n https://polarwatch.noaa.gov/erddap/info/noaacwSARnrcsnpoleDaily/index.htmlTable https://www.star.nesdis.noaa.gov/socd/mecb/sar/index.html (external link) https://polarwatch.noaa.gov/erddap/rss/noaacwSARnrcsnpoleDaily.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=noaacwSARnrcsnpoleDaily&showErrors=false&email= NOAA/NESDIS/STAR/SOCD noaacwSARnrcsnpoleDaily
https://polarwatch.noaa.gov/erddap/griddap/pstere_gridcell_N25k https://polarwatch.noaa.gov/erddap/griddap/pstere_gridcell_N25k.graph https://polarwatch.noaa.gov/erddap/files/pstere_gridcell_N25k/ public Polar Stereographic Grid Cell Area Values of 25km gridded data sets , Polar Stereographic (North), Ancillary Data This data set provides the total on-Earth surface area values at the center of each grid cell of 25km polar stereographic gridded data sets (North) distributed by The National Snow and Ice Data Center\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [y][x]):\ncell_area (Grid Cell area, meters^2)\n https://polarwatch.noaa.gov/erddap/info/pstere_gridcell_N25k/index.htmlTable https://doi.org/10.5067/N6INPBT8Y104 (external link) https://polarwatch.noaa.gov/erddap/rss/pstere_gridcell_N25k.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=pstere_gridcell_N25k&showErrors=false&email= NASA National Snow and Ice Data Center Distributed Active Archive Center pstere_gridcell_N25k
https://polarwatch.noaa.gov/erddap/griddap/pstere_gridcell_S25k https://polarwatch.noaa.gov/erddap/griddap/pstere_gridcell_S25k.graph https://polarwatch.noaa.gov/erddap/files/pstere_gridcell_S25k/ public Polar Stereographic Grid Cell Area Values of 25km gridded data sets , Polar Stereographic (South), Ancillary Data This data set provides the total on-Earth surface area values at the center of each grid cell of 25km polar stereographic gridded data sets (South) distributed by The National Snow and Ice Data Center\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [y][x]):\ncell_area (Grid Cell area, meters^2)\n https://polarwatch.noaa.gov/erddap/info/pstere_gridcell_S25k/index.htmlTable https://doi.org/10.5067/N6INPBT8Y104 (external link) https://polarwatch.noaa.gov/erddap/rss/pstere_gridcell_S25k.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=pstere_gridcell_S25k&showErrors=false&email= NASA National Snow and Ice Data Center Distributed Active Archive Center pstere_gridcell_S25k
https://polarwatch.noaa.gov/erddap/griddap/nsidcCDRice_nh_grid https://polarwatch.noaa.gov/erddap/griddap/nsidcCDRice_nh_grid.graph https://polarwatch.noaa.gov/erddap/files/nsidcCDRice_nh_grid/ public Sea Ice Concentration Lat-Lon Grid, NOAA/NSIDC Climate Data Record, Northern Hemisphere, 25km This ERDDAP data set provides the latitude - longitude grid for the Arctic (Northern Hemisphere) NSIDC passive microwave sea ice concentration climate data record (CDR) datasets distributed via the PolarWatch ERDDAP. The grid used for these datasets is the NSIDC polar stereographic grid with 25 x 25 km grid cells. The input netCDF files from NSIDC contain data variables and reference latitude and longitude variables. These are provided in this ERDDAP as separate datasets based on system architecture requirements.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [ygrid][xgrid]):\nlongitude (degrees_east)\nlatitude (degrees_north)\n https://polarwatch.noaa.gov/erddap/info/nsidcCDRice_nh_grid/index.htmlTable https://nsidc.org/data/g02202 (external link) https://polarwatch.noaa.gov/erddap/rss/nsidcCDRice_nh_grid.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nsidcCDRice_nh_grid&showErrors=false&email= NSIDC > National Snow and Ice Data Center, NOAA nsidcCDRice_nh_grid
https://polarwatch.noaa.gov/erddap/griddap/nsidcCDRice_sh_grid https://polarwatch.noaa.gov/erddap/griddap/nsidcCDRice_sh_grid.graph https://polarwatch.noaa.gov/erddap/files/nsidcCDRice_sh_grid/ public Sea Ice Concentration Lat-Lon Grid, NOAA/NSIDC Climate Data Record, Southern Hemisphere, 25km This data set provides a Climate Data Record (CDR) of sea ice concentration from passive microwave data. It provides a consistent, daily and monthly time series of sea ice concentrations from 09 July 1987 through the most recent processing for both the north and south polar regions. In addition, three other sea ice concentration products are included with the CDR that extend the sea ice measurements back to 26 October 1978. However, these three products are not included in the official CDR because processing the older data in a way that follows the standards of a CDR is not currently possible. All data are on a 25 km x 25 km grid. Variables containing standard deviation, quality flags, and projection information are also included.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [ygrid][xgrid]):\nlatitude (degrees_north)\nlongitude (degrees_east)\n https://polarwatch.noaa.gov/erddap/info/nsidcCDRice_sh_grid/index.htmlTable https://nsidc.org/data/g02202 (external link) https://polarwatch.noaa.gov/erddap/rss/nsidcCDRice_sh_grid.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nsidcCDRice_sh_grid&showErrors=false&email= NSIDC > National Snow and Ice Data Center, NOAA nsidcCDRice_sh_grid
https://polarwatch.noaa.gov/erddap/griddap/nesdis_blendedsic_shem_daily https://polarwatch.noaa.gov/erddap/griddap/nesdis_blendedsic_shem_daily.graph https://polarwatch.noaa.gov/erddap/files/nesdis_blendedsic_shem_daily/ public Sea Ice Concentration, AMSR2/VIIRS, Antarctic, 1km, Blended, UW-CIMSS, 2023-present, Daily This is a Blended Sea Ice Concentration product that combines clear-sky Visible and Infrared Imager/Radiometer Suite (VIIRS) ice concentration from NOAA-20 with that comes from the AMSR2 NASA Team-2 10 km product. The output is remapped into 1-km EASE2 grid cells with a nominal resolution of at least 5-km. The NDE cloud mask is used to screen out cloudy VIIRS pixels. When the cloud mask for a data point is determined to be confidently clear, the output concentration in the blended product is 100% VIIRS. Otherwise, the Best Linear Unbiased Estimator equation is used to determine the output concentration (see https://www.sciencedirect.com/topics/mathematics/linear-unbiased-estimator#:~:text=Under%20assumptions%20V%20and%20VI (external link),(Gauss%E2%80%93Markov%20theorem for more information on method).\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][cols][rows]):\nIceConc (Sea Ice Concentration, Blended AMSR2 and VIIRS, percent)\n https://polarwatch.noaa.gov/erddap/info/nesdis_blendedsic_shem_daily/index.htmlTable https://www.mdpi.com/2072-4292/13/15/2982 (external link) https://polarwatch.noaa.gov/erddap/rss/nesdis_blendedsic_shem_daily.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nesdis_blendedsic_shem_daily&showErrors=false&email= Cooperative Institute for Meteorological Studies, University of Wisconsin at Madison nesdis_blendedsic_shem_daily
https://polarwatch.noaa.gov/erddap/griddap/nsidcG02202v4nh1day https://polarwatch.noaa.gov/erddap/griddap/nsidcG02202v4nh1day.graph https://polarwatch.noaa.gov/erddap/files/nsidcG02202v4nh1day/ public Sea Ice Concentration, NOAA/NSIDC Climate Data Record V4, Northern Hemisphere, 25km, Science Quality, 1978-Present, Daily This data set provides a passive microwave sea ice concentration climate data record (CDR) based on gridded brightness temperatures (TBs) from the Defense Meteorological Satellite Program (DMSP) series of passive microwave radiometers: the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR), the Special Sensor Microwave Imager (SSM/I) and the Special Sensor Microwave Imager/Sounder (SSMIS). The sea ice concentration CDR is an estimate of sea ice concentration that is produced by combining concentration estimates from two algorithms developed at the NASA Goddard Space Flight Center (GSFC): the NASA Team algorithm and the Bootstrap algorithm. The individual algorithms are used to process and combine brightness temperature data at National Snow and Ice Data Center (NSIDC). This product is designed to provide a consistent time series of sea ice concentrations (the fraction, or percentage, of ocean area covered by sea ice) from November 1978 to the present which spans the coverage of several passive microwave instruments. The data are gridded on the NSIDC polar stereographic grid with 25 x 25 km grid cells, and are available in Network Common Data Format (NetCDF) file format. Each file contains a variable with the CDR concentration values as well as variables that hold the NASA Team and Bootstrap processed concentrations for reference Variables containing standard deviation, quality flags, and projection information are also included. Data are available from NSIDC via FTP see https://nsidc.org/data/G02202/versions/4/ (external link). Data are also distributed via the PolarWatch ERDDAP at https://polarwatch.noaa.gov/erddap. Note that the data format available through PolarWatch is different from the NSIDC FTP NetCDF files. The PolarWatch data server stores projection information as global attributes (with the prefix grid_mapping) instead of as a variable; and the timestamp is served in different units (seconds since 1970).\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][ygrid][xgrid]):\ncdr_seaice_conc (NOAA/NSIDC Climate Data Record of Passive Microwave Daily Northern Hemisphere Sea Ice Concentration, 1)\nmelt_onset_day_cdr_seaice_conc (Day of Snow Melt Onset Over Sea Ice, 1)\nnsidc_bt_seaice_conc (Passive Microwave Daily Northern Hemisphere Sea Ice Concentration by Bootstrap algorithm processed by NSIDC, 1)\nnsidc_nt_seaice_conc (Passive Microwave Daily Northern Hemisphere Sea Ice Concentration by NASA Team algorithm processed by NSIDC, 1)\nqa_of_cdr_seaice_conc (Passive Microwave Daily Northern Hemisphere Sea Ice Concentration QC flags)\nspatial_interpolation_flag (Passive Microwave Daily Northern Hemisphere Sea Ice Concentration spatial interpolation flags)\nstdev_of_cdr_seaice_conc (Passive Microwave Daily Northern Hemisphere Sea Ice Concentration Source Estimated Standard Deviation)\ntemporal_interpolation_flag (Passive Microwave Daily Northern Hemisphere Sea Ice Concentration temporal interpolation flags)\n https://polarwatch.noaa.gov/erddap/info/nsidcG02202v4nh1day/index.htmlTable https://nsidc.org/ (external link) https://polarwatch.noaa.gov/erddap/rss/nsidcG02202v4nh1day.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nsidcG02202v4nh1day&showErrors=false&email= NSIDC > National Snow and Ice Data Center nsidcG02202v4nh1day
https://polarwatch.noaa.gov/erddap/griddap/nsidcG02202v4nhmday https://polarwatch.noaa.gov/erddap/griddap/nsidcG02202v4nhmday.graph https://polarwatch.noaa.gov/erddap/files/nsidcG02202v4nhmday/ public Sea Ice Concentration, NOAA/NSIDC Climate Data Record V4, Northern Hemisphere, 25km, Science Quality, 1978-Present, Monthly This data set provides a passive microwave sea ice concentration climate data record (CDR) based on gridded brightness temperatures (TBs) from the Defense Meteorological Satellite Program (DMSP) series of passive microwave radiometers: the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR), the Special Sensor Microwave Imager (SSM/I) and the Special Sensor Microwave Imager/Sounder (SSMIS). The sea ice concentration CDR is an estimate of sea ice concentration that is produced by combining concentration estimates from two algorithms developed at the NASA Goddard Space Flight Center (GSFC): the NASA Team algorithm and the Bootstrap algorithm. The individual algorithms are used to process and combine brightness temperature data at National Snow and Ice Data Center (NSIDC).  This product is designed to provide a consistent time series of sea ice concentrations (the fraction, or percentage, of ocean area covered by sea ice) from November 1978 to the present which spans the coverage of several passive microwave instruments. The data are gridded on the NSIDC polar stereographic grid with 25 x 25 km grid cells, and are available in Network Common Data Format (NetCDF) file format. Each file contains a variable with the CDR concentration values as well as variables that hold the NASA Team and Bootstrap concentrations for reference. Variables containing standard deviation, quality flags, and projection information are also included. Data are available from NSIDC via FTP see https://nsidc.org/data/G02202/versions/4/ (external link). Data are also distributed via the PolarWatch ERDDAP at https://polarwatch.noaa.gov/erddap. Note that the data format available through PolarWatch is different from the NSIDC FTP NetCDF files. The PolarWatch data server stores projection information as global attributes (with the prefix grid_mapping) instead of as a variable; and the timestamp is served in different units (seconds since 1970).\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][ygrid][xgrid]):\ncdr_seaice_conc_monthly (NOAA/NSIDC Climate Data Record of Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration, 1)\nmelt_onset_day_cdr_seaice_conc_monthly (Monthly Day of Snow Melt Onset Over Sea Ice, 1)\nnsidc_bt_seaice_conc_monthly (Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration by Bootstrap algorithm processed by NSIDC, 1)\nnsidc_nt_seaice_conc_monthly (Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration by NASA Team algorithm processed by NSIDC, 1)\nqa_of_cdr_seaice_conc_monthly (Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration QC flags)\nstdev_of_cdr_seaice_conc_monthly (Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration Source Estimated Standard Deviation)\n https://polarwatch.noaa.gov/erddap/info/nsidcG02202v4nhmday/index.htmlTable https://nsidc.org/data/g02202/versions/4/ (external link) https://polarwatch.noaa.gov/erddap/rss/nsidcG02202v4nhmday.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nsidcG02202v4nhmday&showErrors=false&email= NSIDC > National Snow and Ice Data Center nsidcG02202v4nhmday
https://polarwatch.noaa.gov/erddap/griddap/nsidcG02202v4sh1day https://polarwatch.noaa.gov/erddap/griddap/nsidcG02202v4sh1day.graph https://polarwatch.noaa.gov/erddap/files/nsidcG02202v4sh1day/ public Sea Ice Concentration, NOAA/NSIDC Climate Data Record V4, Southern Hemisphere, 25km, Science Quality, 1978-Present, Daily This data set provides a passive microwave sea ice concentration climate data record (CDR) based on gridded brightness temperatures (TBs) from the Defense Meteorological Satellite Program (DMSP) series of passive microwave radiometers: the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR), the Special Sensor Microwave Imager (SSM/I) and the Special Sensor Microwave Imager/Sounder (SSMIS). The sea ice concentration CDR is an estimate of sea ice concentration that is produced by combining concentration estimates from two algorithms developed at the NASA Goddard Space Flight Center (GSFC): the NASA Team algorithm and the Bootstrap algorithm. The individual algorithms are used to process and combine brightness temperatures at National Snow and Ice Data Center (NSIDC). This product is designed to provide a consistent time series of sea ice concentrations (the fraction, or percentage, of ocean area covered by sea ice) from November 1978 to the present which spans the coverage of several passive microwave instruments. The data are gridded on the NSIDC polar stereographic grid with 25 x 25 km grid cells, and are available in Network Common Data Format (NetCDF) file format. Each file contains a variable with the CDR concentration values as well as variables that hold the NASA Team and Bootstrap processed concentrations for reference. Variables containing standard deviation, quality flags, and projection information are also included. Data are available from NSIDC via FTP see https://nsidc.org/data/G02202/versions/4/ (external link). Data are also distributed via the PolarWatch ERDDAP at https://polarwatch.noaa.gov/erddap. Note that the data format available through PolarWatch is different from the NSIDC FTP NetCDF files. The PolarWatch data server stores projection information as global attributes (with the prefix grid_mapping) instead of as a variable; and the timestamp is served in different units (seconds since 1970).\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][ygrid][xgrid]):\ncdr_seaice_conc (NOAA/NSIDC Climate Data Record of Passive Microwave Daily Southern Hemisphere Sea Ice Concentration, 1)\nnsidc_bt_seaice_conc (Passive Microwave Daily Southern Hemisphere Sea Ice Concentration by Bootstrap algorithm processed by NSIDC, 1)\nnsidc_nt_seaice_conc (Passive Microwave Daily Southern Hemisphere Sea Ice Concentration by NASA Team algorithm processed by NSIDC, 1)\nqa_of_cdr_seaice_conc (Passive Microwave Daily Southern Hemisphere Sea Ice Concentration QC flags)\nspatial_interpolation_flag (Passive Microwave Daily Southern Hemisphere Sea Ice Concentration spatial interpolation flags)\nstdev_of_cdr_seaice_conc (Passive Microwave Daily Southern Hemisphere Sea Ice Concentration Source Estimated Standard Deviation)\ntemporal_interpolation_flag (Passive Microwave Daily Southern Hemisphere Sea Ice Concentration temporal interpolation flags)\n https://polarwatch.noaa.gov/erddap/info/nsidcG02202v4sh1day/index.htmlTable https://nsidc.org/ (external link) https://polarwatch.noaa.gov/erddap/rss/nsidcG02202v4sh1day.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nsidcG02202v4sh1day&showErrors=false&email= NSIDC > National Snow and Ice Data Center nsidcG02202v4sh1day
https://polarwatch.noaa.gov/erddap/griddap/nsidcG02202v4shmday https://polarwatch.noaa.gov/erddap/griddap/nsidcG02202v4shmday.graph https://polarwatch.noaa.gov/erddap/files/nsidcG02202v4shmday/ public Sea Ice Concentration, NOAA/NSIDC Climate Data Record V4, Southern Hemisphere, 25km, Science Quality, 1978-Present, Monthly This data set provides a passive microwave sea ice concentration climate data record (CDR) based on gridded brightness temperatures (TBs) from the Defense Meteorological Satellite Program (DMSP) series of passive microwave radiometers: the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR), the Special Sensor Microwave Imager (SSM/I) and the Special Sensor Microwave Imager/Sounder (SSMIS). The sea ice concentration CDR is an estimate of sea ice concentration that is produced by combining concentration estimates from two algorithms developed at the NASA Goddard Space Flight Center (GSFC): the NASA Team algorithm and the Bootstrap algorithm. The individual algorithms are used to process and combine brightness temperature data at National Snow and Ice Data Center (NSIDC).  This product is designed to provide a consistent time series of sea ice concentrations (the fraction, or percentage, of ocean area covered by sea ice) from November 1978 to the present which spans the coverage of several passive microwave instruments. The data are gridded on the NSIDC polar stereographic grid with 25 x 25 km grid cells, and are available in Network Common Data Format (NetCDF) file format. Each file contains a variable with the CDR concentration values as well as variables that hold the NASA Team and Bootstrap concentrations for reference. Variables containing standard deviation, quality flags, and projection information are also included. Data are available from NSIDC via FTP see https://nsidc.org/data/G02202/versions/4/ (external link). Data are also distributed via the PolarWatch ERDDAP at https://polarwatch.noaa.gov/erddap. Note that the data format available through PolarWatch is different from the NSIDC FTP NetCDF files. The PolarWatch data server stores projection information as global attributes (with the prefix grid_mapping) instead of as a variable; and the timestamp is served in different units (seconds since 1970).\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][ygrid][xgrid]):\ncdr_seaice_conc_monthly (NOAA/NSIDC Climate Data Record of Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration, 1)\nnsidc_bt_seaice_conc_monthly (Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration by Bootstrap algorithm processed by NSIDC, 1)\nnsidc_nt_seaice_conc_monthly (Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration by NASA Team algorithm processed by NSIDC, 1)\nqa_of_cdr_seaice_conc_monthly (Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration QC flags)\nstdev_of_cdr_seaice_conc_monthly (Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration Source Estimated Standard Deviation)\n https://polarwatch.noaa.gov/erddap/info/nsidcG02202v4shmday/index.htmlTable https://nsidc.org/data/g02202/versions/4/ (external link) https://polarwatch.noaa.gov/erddap/rss/nsidcG02202v4shmday.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nsidcG02202v4shmday&showErrors=false&email= NSIDC > National Snow and Ice Data Center nsidcG02202v4shmday
https://polarwatch.noaa.gov/erddap/griddap/nsidcG02202v5nhmday https://polarwatch.noaa.gov/erddap/griddap/nsidcG02202v5nhmday.graph https://polarwatch.noaa.gov/erddap/files/nsidcG02202v5nhmday/ public Sea Ice Concentration, NOAA/NSIDC Climate Data Record V5, Northern Hemisphere, 25km, Science Quality, 1978-Present, Monthly This data set provides a passive microwave sea ice concentration climate data record (CDR) based on gridded brightness temperatures (TBs) from the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and the Defense Meteorological Satellite Program (DMSP) series of passive microwave radiometers: the Special Sensor Microwave Imager (SSM/I) and the Special Sensor Microwave Imager/Sounder (SSMIS). The sea ice concentration CDR is an estimate of sea ice concentration that is produced by combining concentration estimates from two algorithms developed at the NASA Goddard Space Flight Center (GSFC): the NASA Team (NT) algorithm and the Bootstrap (BT) algorithm. The individual algorithms are used to process and combine brightness temperature data at NSIDC. This product is designed to provide a consistent time series of sea ice concentrations (the fraction, or percentage, of ocean area covered by sea ice) from November 1978 to the present, which spans the coverage of several passive microwave instruments. The data are gridded on the NSIDC polar stereographic grid with 25 km x 25 km grid cells and are available in NetCDF file format. Each file contains a variable with the CDR concentration values as well as variables that hold the raw NT and BT processed concentrations for reference. Variables containing standard deviation, quality flags, and projection information are also included. Files that are from 2013 to the present also contain a prototype CDR sea ice concentration based on gridded TBs from the Advanced Microwave Scanning Radiometer 2 (AMSR2) onboard the GCOM-W1 satellite.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][y][x]):\ncdr_seaice_conc_monthly (NOAA/NSIDC CDR of Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration, 1)\ncdr_seaice_conc_monthly_stdev (NOAA/NSIDC CDR of Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration Source Estimated Standard Deviation, 1)\ncdr_seaice_conc_monthly_qa_flag (NOAA/NSIDC CDR of Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration QA flags, 1)\n https://polarwatch.noaa.gov/erddap/info/nsidcG02202v5nhmday/index.htmlTable https://nsidc.org/data/g02202/versions/5 (external link) https://polarwatch.noaa.gov/erddap/rss/nsidcG02202v5nhmday.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nsidcG02202v5nhmday&showErrors=false&email= NSIDC > National Snow and Ice Data Center nsidcG02202v5nhmday
https://polarwatch.noaa.gov/erddap/griddap/nsidcG10016v2nh1day https://polarwatch.noaa.gov/erddap/griddap/nsidcG10016v2nh1day.graph https://polarwatch.noaa.gov/erddap/files/nsidcG10016v2nh1day/ public Sea Ice Concentration, NOAA/NSIDC NRT Climate Data Record V2, Northern Hemisphere, 25km, Near Real-Time, 2021-Present, Daily This data set provides a passive microwave sea ice concentration climate data record (CDR) based on gridded brightness temperatures (TBs) from the Defense Meteorological Satellite Program (DMSP) series of passive microwave radiometers, currently the Special Sensor Microwave Imager/Sounder (SSMIS). The sea ice concentration CDR is an estimate of sea ice concentration that is produced by combining concentration estimates from two algorithms developed at the NASA Goddard Space Flight Center (GSFC): the NASA Team algorithm and the Bootstrap algorithm. The individual algorithms are used to process and combine brightness temperature data at National Snow and Ice Data Center (NSIDC). This product is designed to extend a consistent time series of sea ice concentrations (the fraction, or percentage, of ocean area covered by sea ice) from the end of the NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration Version 4 dataset which spans the coverage of several passive microwave instruments. The data are gridded on the NSIDC polar stereographic grid with 25 x 25 km grid cells, and are available in Network Common Data Format (NetCDF) file format. Each file contains a variable with the CDR concentration values as well as variables that hold the NASA Team and Bootstrap processed concentrations for reference Variables containing standard deviation, quality flags, and projection information are also included. Data are available from NSIDC via FTP see https://nsidc.org/data/G10016/versions/2/ (external link). Data are also distributed via the PolarWatch ERDDAP at https://polarwatch.noaa.gov/erddap. Note that the data format available through PolarWatch is slightly different from the NSIDC FTP NetCDF files. The PolarWatch data server stores projection information as global attributes (with the prefix grid_mapping) instead of as a variable; and the timestamp is served in different units (seconds since 1970).\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][ygrid][xgrid]):\ncdr_seaice_conc (NOAA/NSIDC Climate Data Record of Passive Microwave Daily Northern Hemisphere Sea Ice Concentration, 1)\nmelt_onset_day_cdr_seaice_conc (Day of Snow Melt Onset Over Sea Ice, 1)\nnsidc_bt_seaice_conc (Passive Microwave Daily Northern Hemisphere Sea Ice Concentration by Bootstrap algorithm processed by NSIDC, 1)\nnsidc_nt_seaice_conc (Passive Microwave Daily Northern Hemisphere Sea Ice Concentration by NASA Team algorithm processed by NSIDC, 1)\nqa_of_cdr_seaice_conc (Passive Microwave Daily Northern Hemisphere Sea Ice Concentration QC flags)\nspatial_interpolation_flag (Passive Microwave Daily Northern Hemisphere Sea Ice Concentration spatial interpolation flags)\nstdev_of_cdr_seaice_conc (Passive Microwave Daily Northern Hemisphere Sea Ice Concentration Source Estimated Standard Deviation)\ntemporal_interpolation_flag (Passive Microwave Daily Northern Hemisphere Sea Ice Concentration temporal interpolation flags)\n https://polarwatch.noaa.gov/erddap/info/nsidcG10016v2nh1day/index.htmlTable https://nsidc.org/ (external link) https://polarwatch.noaa.gov/erddap/rss/nsidcG10016v2nh1day.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nsidcG10016v2nh1day&showErrors=false&email= NSIDC > National Snow and Ice Data Center nsidcG10016v2nh1day
https://polarwatch.noaa.gov/erddap/griddap/nsidcG10016v2nhmday https://polarwatch.noaa.gov/erddap/griddap/nsidcG10016v2nhmday.graph https://polarwatch.noaa.gov/erddap/files/nsidcG10016v2nhmday/ public Sea Ice Concentration, NOAA/NSIDC NRT Climate Data Record V2, Northern Hemisphere, 25km, Near Real-Time, 2021-Present, Monthly This data set provides a passive microwave sea ice concentration climate data record (CDR) based on gridded brightness temperatures (TBs) from the Defense Meteorological Satellite Program (DMSP) series of passive microwave radiometers: the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR), the Special Sensor Microwave Imager (SSM/I) and the Special Sensor Microwave Imager/Sounder (SSMIS). The sea ice concentration CDR is an estimate of sea ice concentration that is produced by combining concentration estimates from two algorithms developed at the NASA Goddard Space Flight Center (GSFC): the NASA Team algorithm and the Bootstrap algorithm. The individual algorithms are used to process and combine brightness temperature data at National Snow and Ice Data Center (NSIDC). This product is designed to provide a consistent time series of sea ice concentrations (the fraction, or percentage, of ocean area covered by sea ice) from November 1978 to the present which spans the coverage of several passive microwave instruments. The data are gridded on the NSIDC polar stereographic grid with 25 x 25 km grid cells, and are available in Network Common Data Format (NetCDF) file format. Each file contains a variable with the CDR concentration values as well as variables that hold the NASA Team and Bootstrap processed concentrations for reference Variables containing standard deviation, quality flags, and projection information are also included. Data are available from NSIDC via FTP see https://nsidc.org/data/G10016/versions/2/ (external link). Data are also distributed via the PolarWatch ERDDAP at https://polarwatch.noaa.gov/erddap. Note that the data format available through PolarWatch is slightly different from the NSIDC FTP NetCDF files. The PolarWatch data server stores projection information as global attributes (with the prefix grid_mapping) instead of as a variable; and the timestamp is served in different units (seconds since 1970).\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][ygrid][xgrid]):\ncdr_seaice_conc_monthly (NOAA/NSIDC Climate Data Record of Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration, 1)\nmelt_onset_day_cdr_seaice_conc_monthly (Monthly Day of Snow Melt Onset Over Sea Ice, 1)\nnsidc_bt_seaice_conc_monthly (Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration by Bootstrap algorithm processed by NSIDC, 1)\nnsidc_nt_seaice_conc_monthly (Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration by NASA Team algorithm processed by NSIDC, 1)\nqa_of_cdr_seaice_conc_monthly (Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration QC flags)\nstdev_of_cdr_seaice_conc_monthly (Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration Source Estimated Standard Deviation)\n https://polarwatch.noaa.gov/erddap/info/nsidcG10016v2nhmday/index.htmlTable https://nsidc.org/data/G10016/versions/2/ (external link) https://polarwatch.noaa.gov/erddap/rss/nsidcG10016v2nhmday.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nsidcG10016v2nhmday&showErrors=false&email= NSIDC > National Snow and Ice Data Center nsidcG10016v2nhmday
https://polarwatch.noaa.gov/erddap/griddap/nsidcG10016v2sh1day https://polarwatch.noaa.gov/erddap/griddap/nsidcG10016v2sh1day.graph https://polarwatch.noaa.gov/erddap/files/nsidcG10016v2sh1day/ public Sea Ice Concentration, NOAA/NSIDC NRT Climate Data Record V2, Southern Hemisphere, 25km, Near Real-Time, 2021-Present, Daily This data set provides a passive microwave sea ice concentration climate data record (CDR) based on gridded brightness temperatures (TBs) from the Defense Meteorological Satellite Program (DMSP) series of passive microwave radiometers: the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR), the Special Sensor Microwave Imager (SSM/I) and the Special Sensor Microwave Imager/Sounder (SSMIS). The sea ice concentration CDR is an estimate of sea ice concentration that is produced by combining concentration estimates from two algorithms developed at the NASA Goddard Space Flight Center (GSFC): the NASA Team algorithm and the Bootstrap algorithm. The individual algorithms are used to process and combine brightness temperature data at National Snow and Ice Data Center (NSIDC). This product is designed to provide a consistent time series of sea ice concentrations (the fraction, or percentage, of ocean area covered by sea ice) from November 1978 to the present which spans the coverage of several passive microwave instruments. The data are gridded on the NSIDC polar stereographic grid with 25 x 25 km grid cells, and are available in Network Common Data Format (NetCDF) file format. Each file contains a variable with the CDR concentration values as well as variables that hold the NASA Team and Bootstrap processed concentrations for reference Variables containing standard deviation, quality flags, and projection information are also included. Data are available via FTP.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][ygrid][xgrid]):\ncdr_seaice_conc (NOAA/NSIDC Climate Data Record of Passive Microwave Daily Southern Hemisphere Sea Ice Concentration, 1)\nnsidc_bt_seaice_conc (Passive Microwave Daily Southern Hemisphere Sea Ice Concentration by Bootstrap algorithm processed by NSIDC, 1)\nnsidc_nt_seaice_conc (Passive Microwave Daily Southern Hemisphere Sea Ice Concentration by NASA Team algorithm processed by NSIDC, 1)\nqa_of_cdr_seaice_conc (Passive Microwave Daily Southern Hemisphere Sea Ice Concentration QC flags)\nspatial_interpolation_flag (Passive Microwave Daily Southern Hemisphere Sea Ice Concentration spatial interpolation flags)\nstdev_of_cdr_seaice_conc (Passive Microwave Daily Southern Hemisphere Sea Ice Concentration Source Estimated Standard Deviation)\ntemporal_interpolation_flag (Passive Microwave Daily Southern Hemisphere Sea Ice Concentration temporal interpolation flags)\n https://polarwatch.noaa.gov/erddap/info/nsidcG10016v2sh1day/index.htmlTable https://nsidc.org/ (external link) https://polarwatch.noaa.gov/erddap/rss/nsidcG10016v2sh1day.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nsidcG10016v2sh1day&showErrors=false&email= NSIDC > National Snow and Ice Data Center nsidcG10016v2sh1day
https://polarwatch.noaa.gov/erddap/griddap/nsidcG10016v2shmday https://polarwatch.noaa.gov/erddap/griddap/nsidcG10016v2shmday.graph https://polarwatch.noaa.gov/erddap/files/nsidcG10016v2shmday/ public Sea Ice Concentration, NOAA/NSIDC NRT Climate Data Record V2, Southern Hemisphere, 25km, Near Real-Time, 2021-Present, Monthly This data set provides a passive microwave sea ice concentration climate data record (CDR) based on gridded brightness temperatures (TBs) from the Defense Meteorological Satellite Program (DMSP) series of passive microwave radiometers: the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR), the Special Sensor Microwave Imager (SSM/I) and the Special Sensor Microwave Imager/Sounder (SSMIS). The sea ice concentration CDR is an estimate of sea ice concentration that is produced by combining concentration estimates from two algorithms developed at the NASA Goddard Space Flight Center (GSFC): the NASA Team algorithm and the Bootstrap algorithm. The individual algorithms are used to process and combine brightness temperature data at National Snow and Ice Data Center (NSIDC). This product is designed to provide a consistent time series of sea ice concentrations (the fraction, or percentage, of ocean area covered by sea ice) from November 1978 to the present which spans the coverage of several passive microwave instruments. The data are gridded on the NSIDC polar stereographic grid with 25 x 25 km grid cells, and are available in Network Common Data Format (NetCDF) file format. Each file contains a variable with the CDR concentration values as well as variables that hold the NASA Team and Bootstrap processed concentrations for reference Variables containing standard deviation, quality flags, and projection information are also included. Data are available via FTP from NSIDC. Note that the data format available through PolarWatch is slightly different from the NSIDC FTP NetCDF files. The PolarWatch data server requires storing the projection information as global attributes with the prefix grid_mapping instead of as a projection variable and the timestamp is served in different units (seconds since 1970).\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][ygrid][xgrid]):\ncdr_seaice_conc_monthly (NOAA/NSIDC Climate Data Record of Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration, 1)\nnsidc_bt_seaice_conc_monthly (Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration by Bootstrap algorithm processed by NSIDC, 1)\nnsidc_nt_seaice_conc_monthly (Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration by NASA Team algorithm processed by NSIDC, 1)\nqa_of_cdr_seaice_conc_monthly (Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration QC flags)\nstdev_of_cdr_seaice_conc_monthly (Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration Source Estimated Standard Deviation)\n https://polarwatch.noaa.gov/erddap/info/nsidcG10016v2shmday/index.htmlTable https://nsidc.org/data/G10016/versions/2/ (external link) https://polarwatch.noaa.gov/erddap/rss/nsidcG10016v2shmday.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nsidcG10016v2shmday&showErrors=false&email= NSIDC > National Snow and Ice Data Center nsidcG10016v2shmday
https://polarwatch.noaa.gov/erddap/griddap/eumetsat_osisaf_grid_sh_ps https://polarwatch.noaa.gov/erddap/griddap/eumetsat_osisaf_grid_sh_ps.graph public Sea Ice Lat-Lon Grid, OSI SAF EUMETSAT, Antarctic, Polar Stereographic, 10km The daily analysis of sea ice concentration is obtained from operation satellite images of the polar regions. It is based on atmospherically corrected signal and a carefully selected sea ice concentration algorithm. This product is freely available from the European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT) Ocean and Sea Ice Satellite Application Facility (OSI SAF).\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [yc][xc]):\nlat (latitude coordinate, degrees_north)\nlon (longitude coordinate, degrees_east)\n https://polarwatch.noaa.gov/erddap/info/eumetsat_osisaf_grid_sh_ps/index.htmlTable https://thredds.met.no/thredds/dodsC/osisaf/met.no/ice/conc_sh_pol_agg.html (external link) https://polarwatch.noaa.gov/erddap/rss/eumetsat_osisaf_grid_sh_ps.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=eumetsat_osisaf_grid_sh_ps&showErrors=false&email= EUMETSAT OSI SAF eumetsat_osisaf_grid_sh_ps
https://polarwatch.noaa.gov/erddap/griddap/eumetsat_osisaf_grid_nh_ps https://polarwatch.noaa.gov/erddap/griddap/eumetsat_osisaf_grid_nh_ps.graph public Sea Ice Lat-Lon Grid, OSI SAF EUMETSAT, Arctic, Polar Stereographic, 10km This is the coordinating geospatial grid for the OSI SAF northern hemisphere polar stereographic dataset(ERDDAP ID: eumetsat_osisaf_ice_conc_nh_ps.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [yc][xc]):\nlat (latitude coordinate, degrees_north)\nlon (longitude coordinate, degrees_east)\n https://polarwatch.noaa.gov/erddap/info/eumetsat_osisaf_grid_nh_ps/index.htmlTable https://thredds.met.no/thredds/dodsC/osisaf/met.no/ice/conc_nh_pol_agg.html (external link) https://polarwatch.noaa.gov/erddap/rss/eumetsat_osisaf_grid_nh_ps.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=eumetsat_osisaf_grid_nh_ps&showErrors=false&email= EUMETSAT OSI SAF eumetsat_osisaf_grid_nh_ps
https://polarwatch.noaa.gov/erddap/griddap/nesdisGeoPolarSSTN5NRT https://polarwatch.noaa.gov/erddap/griddap/nesdisGeoPolarSSTN5NRT.graph https://polarwatch.noaa.gov/erddap/wms/nesdisGeoPolarSSTN5NRT/request https://polarwatch.noaa.gov/erddap/files/nesdisGeoPolarSSTN5NRT/ public Sea-Surface Temperature, NOAA Geo-polar Blended Analysis Night Only, GHRSST, Near Real-Time, Global 5km, 2002-Present, Daily (degree C) Analyzed blended sea surface temperature over the global ocean using night only input data. An SST estimation scheme which combines multi-satellite retrieva\nls of sea surface temperature datasets available from polar orbiters, geostationary InfraRed (IR) and microwave sensors into a single global analysis. This global SST analysis provides\n a daily gap-free map of the foundation sea surface temperature at 0.05º spatial resolution. Note 2002-2016 is a reanalysis.  2017-present is near real-time processing.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][latitude][longitude]):\nanalysed_sst (analysed sea surface temperature, degree_C)\nanalysis_error (estimated error standard deviation of analysed_sst, kelvin)\nmask (sea/land/ice bit mask)\nsea_ice_fraction (1)\n https://polarwatch.noaa.gov/erddap/metadata/fgdc/xml/nesdisGeoPolarSSTN5NRT_fgdc.xml https://polarwatch.noaa.gov/erddap/metadata/iso19115/xml/nesdisGeoPolarSSTN5NRT_iso19115.xml https://polarwatch.noaa.gov/erddap/info/nesdisGeoPolarSSTN5NRT/index.htmlTable https://podaac.jpl.nasa.gov/dataset/Geo_Polar_Blended_Night-OSPO-L4-GLOB-v1.0 (external link) https://polarwatch.noaa.gov/erddap/rss/nesdisGeoPolarSSTN5NRT.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nesdisGeoPolarSSTN5NRT&showErrors=false&email= NOAA NESDIS CoastWatch nesdisGeoPolarSSTN5NRT
https://polarwatch.noaa.gov/erddap/griddap/erdPH2ssta8day https://polarwatch.noaa.gov/erddap/griddap/erdPH2ssta8day.graph https://polarwatch.noaa.gov/erddap/wms/erdPH2ssta8day/request https://polarwatch.noaa.gov/erddap/files/erdPH2ssta8day/ public SST, Pathfinder Ver 5.2 (L3C), Day and Night, Global, 0.0417°, 1981-2006, Science Quality (8 Day Composite) This dataset contains sea surface temperature (SST) data produced as part of the Advanced Very High Resolution Radiometer (AVHRR) Pathfinder SST Project, created using Version 5.2 of the Pathfinder algorithm and the dataset. Multi-day composites and composites of day and night datasets were generated by the Environmental Research Division (NOAA/NMFS/SWFSC/ERD).\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][latitude][longitude]):\nsea_surface_temperature (Sea Surface Skin Temperature, degree_C)\nsea_ice_fraction (1)\nwind_speed (10m Wind Speed, m s-1)\nl2p_flags\n https://polarwatch.noaa.gov/erddap/metadata/fgdc/xml/erdPH2ssta8day_fgdc.xml https://polarwatch.noaa.gov/erddap/metadata/iso19115/xml/erdPH2ssta8day_iso19115.xml https://polarwatch.noaa.gov/erddap/info/erdPH2ssta8day/index.htmlTable https://pathfinder.nodc.noaa.gov (external link) https://polarwatch.noaa.gov/erddap/rss/erdPH2ssta8day.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=erdPH2ssta8day&showErrors=false&email= NOAA NCEI erdPH2ssta8day
https://polarwatch.noaa.gov/erddap/griddap/erdPH2ssta1day https://polarwatch.noaa.gov/erddap/griddap/erdPH2ssta1day.graph https://polarwatch.noaa.gov/erddap/wms/erdPH2ssta1day/request https://polarwatch.noaa.gov/erddap/files/erdPH2ssta1day/ public SST, Pathfinder Ver 5.2 (L3C), Day and Night, Global, 0.0417°, 1981-2012, Science Quality (1 Day Composite) This dataset contains sea surface temperature (SST) data produced as part of the Advanced Very High Resolution Radiometer (AVHRR) Pathfinder SST Project, created using Version 5.2 of the Pathfinder algorithm and the dataset. Multi-day composites and composites of day and night datasets were generated by the Environmental Research Division (NOAA/NMFS/SWFSC/ERD).\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][latitude][longitude]):\nsea_surface_temperature (Sea Surface Skin Temperature, degree_C)\nsea_ice_fraction (1)\nwind_speed (10m Wind Speed, m s-1)\nl2p_flags\n https://polarwatch.noaa.gov/erddap/metadata/fgdc/xml/erdPH2ssta1day_fgdc.xml https://polarwatch.noaa.gov/erddap/metadata/iso19115/xml/erdPH2ssta1day_iso19115.xml https://polarwatch.noaa.gov/erddap/info/erdPH2ssta1day/index.htmlTable https://pathfinder.nodc.noaa.gov (external link) https://polarwatch.noaa.gov/erddap/rss/erdPH2ssta1day.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=erdPH2ssta1day&showErrors=false&email= NOAA NCEI erdPH2ssta1day
https://polarwatch.noaa.gov/erddap/griddap/erdPH2sstamday https://polarwatch.noaa.gov/erddap/griddap/erdPH2sstamday.graph https://polarwatch.noaa.gov/erddap/wms/erdPH2sstamday/request https://polarwatch.noaa.gov/erddap/files/erdPH2sstamday/ public SST, Pathfinder Ver 5.2 (L3C), Day and Night, Global, 0.0417°, 1981-2012, Science Quality (Monthly Composite) This dataset contains sea surface temperature (SST) data produced as part of the Advanced Very High Resolution Radiometer (AVHRR) Pathfinder SST Project, created using Version 5.2 of the Pathfinder algorithm and the dataset. Multi-day composites and composites of day and night datasets were generated by the Environmental Research Division (NOAA/NMFS/SWFSC/ERD).\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][latitude][longitude]):\nsea_surface_temperature (Sea Surface Skin Temperature, degree_C)\nsea_ice_fraction (1)\nwind_speed (10m Wind Speed, m s-1)\nl2p_flags\n https://polarwatch.noaa.gov/erddap/metadata/fgdc/xml/erdPH2sstamday_fgdc.xml https://polarwatch.noaa.gov/erddap/metadata/iso19115/xml/erdPH2sstamday_iso19115.xml https://polarwatch.noaa.gov/erddap/info/erdPH2sstamday/index.htmlTable https://pathfinder.nodc.noaa.gov (external link) https://polarwatch.noaa.gov/erddap/rss/erdPH2sstamday.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=erdPH2sstamday&showErrors=false&email= NOAA NCEI erdPH2sstamday
https://polarwatch.noaa.gov/erddap/griddap/erdPH53sstd8day https://polarwatch.noaa.gov/erddap/griddap/erdPH53sstd8day.graph https://polarwatch.noaa.gov/erddap/wms/erdPH53sstd8day/request https://polarwatch.noaa.gov/erddap/files/erdPH53sstd8day/ public SST, Pathfinder Ver 5.3 (L3C), Day, Global, 0.0417°, 1981-present, Science Quality (8 Day Composite) This dataset contains 8-day-composites of daytime sea surface temperature (SST) data produced as part of the AVHRR Pathfinder SST Project. The source data were created using Version 5.3 of the Pathfinder algorithm and the file is nearly but not completely compliant with the GHRSST Data Specifications V2.0 (GDS2). Source data were created by the NOAA National Centers for Environmental Information (NCEI). Multi-day composites were created by NOAA CoastWatch-West Coast and NOAA/SWFSC/ERD.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][latitude][longitude]):\nsea_surface_temperature (NOAA Climate Data Record of Sea Surface Skin Temperature, degree_C)\nsea_ice_fraction (1)\nwind_speed (10m wind speed, m s-1)\nl2p_flags\n https://polarwatch.noaa.gov/erddap/metadata/fgdc/xml/erdPH53sstd8day_fgdc.xml https://polarwatch.noaa.gov/erddap/metadata/iso19115/xml/erdPH53sstd8day_iso19115.xml https://polarwatch.noaa.gov/erddap/info/erdPH53sstd8day/index.htmlTable https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:AVHRR_Pathfinder-NCEI-L3C-v5.3 (external link) https://polarwatch.noaa.gov/erddap/rss/erdPH53sstd8day.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=erdPH53sstd8day&showErrors=false&email= NOAA NCEI erdPH53sstd8day
https://polarwatch.noaa.gov/erddap/griddap/erdPH53sstdmday https://polarwatch.noaa.gov/erddap/griddap/erdPH53sstdmday.graph https://polarwatch.noaa.gov/erddap/wms/erdPH53sstdmday/request https://polarwatch.noaa.gov/erddap/files/erdPH53sstdmday/ public SST, Pathfinder Ver 5.3 (L3C), Day, Global, 0.0417°, 1981-present, Science Quality (Monthly Composite) This dataset contains monthly composites of daytime sea surface temperature (SST) data produced as part of the AVHRR Pathfinder SST Project. The source data were created using Version 5.3 of the Pathfinder algorithm and the file is nearly but not completely compliant with the GHRSST Data Specifications V2.0 (GDS2). Source data were created by the NOAA National Centers for Environmental Information (NCEI). Multi-day composites were created by NOAA CoastWatch-West Coast and NOAA/SWFSC/ERD.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][latitude][longitude]):\nsea_surface_temperature (NOAA Climate Data Record of Sea Surface Skin Temperature, degree_C)\nsea_ice_fraction (1)\nwind_speed (10m wind speed, m s-1)\nl2p_flags\n https://polarwatch.noaa.gov/erddap/metadata/fgdc/xml/erdPH53sstdmday_fgdc.xml https://polarwatch.noaa.gov/erddap/metadata/iso19115/xml/erdPH53sstdmday_iso19115.xml https://polarwatch.noaa.gov/erddap/info/erdPH53sstdmday/index.htmlTable https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:AVHRR_Pathfinder-NCEI-L3C-v5.3 (external link) https://polarwatch.noaa.gov/erddap/rss/erdPH53sstdmday.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=erdPH53sstdmday&showErrors=false&email= NOAA NCEI erdPH53sstdmday
https://polarwatch.noaa.gov/erddap/griddap/erdPH53sstn8day https://polarwatch.noaa.gov/erddap/griddap/erdPH53sstn8day.graph https://polarwatch.noaa.gov/erddap/wms/erdPH53sstn8day/request https://polarwatch.noaa.gov/erddap/files/erdPH53sstn8day/ public SST, Pathfinder Ver 5.3 (L3C), Night, Global, 0.0417°, 1981-present, Science Quality (8 Day Composite) This dataset contains 8-day-composites of nighttime sea surface temperature (SST) data produced as part of the AVHRR Pathfinder SST Project. The source data were created using Version 5.3 of the Pathfinder algorithm and the file is nearly but not completely compliant with the GHRSST Data Specifications V2.0 (GDS2). Source data were created by the NOAA National Centers for Environmental Information (NCEI). Multi-day composites were created by NOAA CoastWatch-West Coast and NOAA/SWFSC/ERD.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][latitude][longitude]):\nsea_surface_temperature (NOAA Climate Data Record of Sea Surface Skin Temperature, degree_C)\nsea_ice_fraction (1)\nwind_speed (10m wind speed, m s-1)\nl2p_flags\n https://polarwatch.noaa.gov/erddap/metadata/fgdc/xml/erdPH53sstn8day_fgdc.xml https://polarwatch.noaa.gov/erddap/metadata/iso19115/xml/erdPH53sstn8day_iso19115.xml https://polarwatch.noaa.gov/erddap/info/erdPH53sstn8day/index.htmlTable https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:AVHRR_Pathfinder-NCEI-L3C-v5.3 (external link) https://polarwatch.noaa.gov/erddap/rss/erdPH53sstn8day.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=erdPH53sstn8day&showErrors=false&email= NOAA NCEI erdPH53sstn8day
https://polarwatch.noaa.gov/erddap/griddap/erdPH53sstnmday https://polarwatch.noaa.gov/erddap/griddap/erdPH53sstnmday.graph https://polarwatch.noaa.gov/erddap/wms/erdPH53sstnmday/request https://polarwatch.noaa.gov/erddap/files/erdPH53sstnmday/ public SST, Pathfinder Ver 5.3 (L3C), Night, Global, 0.0417°, 1981-present, Science Quality (Monthly Composite) This dataset contains monthly composites of nighttime sea surface temperature (SST) data produced as part of the AVHRR Pathfinder SST Project. The source data were created using Version 5.3 of the Pathfinder algorithm and the file is nearly but not completely compliant with the GHRSST Data Specifications V2.0 (GDS2). Source data were created by the NOAA National Centers for Environmental Information (NCEI). Multi-day composites were created by NOAA CoastWatch-West Coast and NOAA/SWFSC/ERD.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][latitude][longitude]):\nsea_surface_temperature (NOAA Climate Data Record of Sea Surface Skin Temperature, degree_C)\nsea_ice_fraction (1)\nwind_speed (10m wind speed, m s-1)\nl2p_flags\n https://polarwatch.noaa.gov/erddap/metadata/fgdc/xml/erdPH53sstnmday_fgdc.xml https://polarwatch.noaa.gov/erddap/metadata/iso19115/xml/erdPH53sstnmday_iso19115.xml https://polarwatch.noaa.gov/erddap/info/erdPH53sstnmday/index.htmlTable https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:AVHRR_Pathfinder-NCEI-L3C-v5.3 (external link) https://polarwatch.noaa.gov/erddap/rss/erdPH53sstnmday.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=erdPH53sstnmday&showErrors=false&email= NOAA NCEI erdPH53sstnmday
https://polarwatch.noaa.gov/erddap/griddap/snowfox_miz2_daily https://polarwatch.noaa.gov/erddap/griddap/snowfox_miz2_daily.graph https://polarwatch.noaa.gov/erddap/files/snowfox_miz2_daily/ public X- Experimental Sea Ice Classification, SAR Composite, Near Real-Time, 1km, North Pole, Daily This file contains a composite of Synthetic Aperture Radar (SAR) derived sea ice classification covering the Arctic for a period of one day. The files are produced in SAROPS (SAR Operational Product System) by the Water Surface Conditions science team within the NOAA STAR Satellite Oceanography and Climatology Division. Data from the following C-Band SAR systems are included: Sentinel-1, RADARSAT-2, and RADARSAT Constellation Mission. Sea ice classification values represent concentration up to 80%, and greater than 80%. Daily coverage varies depending on SAR acquisitions.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][level][y][x]):\nSIC (Classified sea ice concentration)\n https://polarwatch.noaa.gov/erddap/info/snowfox_miz2_daily/index.htmlTable https://www.star.nesdis.noaa.gov/socd/mecb/sar/index.html (external link) https://polarwatch.noaa.gov/erddap/rss/snowfox_miz2_daily.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=snowfox_miz2_daily&showErrors=false&email= NOAA/NESDIS/STAR/SOCD snowfox_miz2_daily
https://polarwatch.noaa.gov/erddap/griddap/nsidcCDRiceSQsh1day https://polarwatch.noaa.gov/erddap/griddap/nsidcCDRiceSQsh1day.graph https://polarwatch.noaa.gov/erddap/files/nsidcCDRiceSQsh1day/ public Z-DEPRECATED - Sea Ice Concentration, NOAA/NSIDC Climate Data Record V3, Antarctic, 25km, Science Quality, 1978-2019, Daily Alert: There is a newer version of this dataset. Please use Version 4 of the NSIDC Sea Ice Concentration CDR with ERDDAP ID:nsidcG02202v4sh1day. Link: https://polarwatch.noaa.gov/erddap/griddap/nsidcG02202v4sh1day.graph. Version 3 Summary: This data set provides a Climate Data Record (CDR) of sea ice concentration from passive microwave data. It provides a consistent, daily and monthly time series of sea ice concentrations from 09 July 1987 through the most recent processing for both the north and south polar regions. In addition, three other sea ice concentration products are included with the CDR that extend the sea ice measurements back to 26 October 1978. However, these three products are not included in the official CDR because processing the older data in a way that follows the standards of a CDR is not currently possible. All data are on a 25 km x 25 km grid. Variables containing standard deviation, quality flags, and projection information are also included.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][ygrid][xgrid]):\nseaice_conc_cdr (NOAA/NSIDC Climate Data Record of Passive Microwave Daily Southern Hemisphere Sea Ice Concentration, 1)\nstdev_of_seaice_conc_cdr (Passive Microwave Daily Southern Hemisphere Sea Ice Concentration Source Estimated Standard Deviation)\nmelt_onset_day_seaice_conc_cdr (Day of Snow Melt Onset Over Sea Ice, 1)\nqa_of_seaice_conc_cdr (Passive Microwave Daily Southern Hemisphere Sea Ice Concentration QC flags)\ngoddard_merged_seaice_conc (Goddard Edited Climate Data Record of Passive Microwave Daily Southern Hemisphere Sea Ice Concentration, Goddard Edited, 1)\ngoddard_nt_seaice_conc (Passive Microwave Daily Southern Hemisphere Sea Ice Concentration by NASA Team algorithm with Goddard QC, 1)\ngoddard_bt_seaice_conc (Passive Microwave Daily Southern Hemisphere Sea Ice Concentration by Bootstrap algorithm with Goddard QC, 1)\n https://polarwatch.noaa.gov/erddap/info/nsidcCDRiceSQsh1day/index.htmlTable https://nsidc.org/data/g02202 (external link) https://polarwatch.noaa.gov/erddap/rss/nsidcCDRiceSQsh1day.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nsidcCDRiceSQsh1day&showErrors=false&email= NSIDC > National Snow and Ice Data Center, NOAA nsidcCDRiceSQsh1day
https://polarwatch.noaa.gov/erddap/griddap/nsidcCDRiceSQshmday https://polarwatch.noaa.gov/erddap/griddap/nsidcCDRiceSQshmday.graph https://polarwatch.noaa.gov/erddap/files/nsidcCDRiceSQshmday/ public Z-DEPRECATED - Sea Ice Concentration, NOAA/NSIDC Climate Data Record V3, Antarctic, 25km, Science Quality, 1978-2019, Monthly Alert: There is a newer version of this dataset. Please use Version 4 of the NSIDC Sea Ice Concentration CDR with ERDDAP ID: nsidcG02202v4shmday. Link: https://polarwatch.noaa.gov/erddap/griddap/nsidcG02202v4shmday.graph. Version 3 Summary: This data set provides a passive microwave sea ice concentration climate data record (CDR) based on gridded brightness temperatures (TBs) from the Defense Meteorological Satellite Program (DMSP) series of passive microwave radiometers: the Special Sensor Microwave Imager (SSM/I) and the Special Sensor Microwave Imager/Sounder (SSMIS). The sea ice concentration CDR is an estimate of sea ice concentration that is produced by combining concentration estimates from two algorithms developed at the NASA Goddard Space Flight Center (GSFC): the NASA Team algorithm and the Bootstrap algorithm. The individual algorithms are processed and combined at National Snow and Ice Data Center (NSIDC) using brightness temperature data from Remote Sensing Systems, Inc. (RSS).  This product is designed to provide a consistent time series of sea ice concentrations (the fraction, or percentage, of ocean area covered by sea ice) from 1987 to the present which spans the coverage of several passive microwave instruments. The data are gridded on the NSIDC polar stereographic grid with 25 x 25 km grid cells, and are available in Network Common Data Format (NetCDF) file format. Each file contains a variable with the CDR concentration values as well as variables that hold the input NASA Team and Bootstrap concentrations for reference and a merged NASA Team/Bootstrap version of the Goddard sea ice concentrations that spans 1978 to the present made available as a longer-term analog of the CDR concentrations. Variables containing standard deviation, quality flags, and projection information are also included. Data are available via FTP.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][ygrid][xgrid]):\nseaice_conc_monthly_cdr (NOAA/NSIDC Climate Data Record of Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration, 1)\nstdev_of_seaice_conc_monthly_cdr (Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration Source Estimated Standard Deviation)\nmelt_onset_day_seaice_conc_monthly_cdr (Monthly Day of Snow Melt Onset Over Sea Ice, 1)\nqa_of_seaice_conc_monthly_cdr (Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration QC flags)\ngoddard_merged_seaice_conc_monthly (Goddard Edited Climate Data Record of Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration, Goddard Edited, 1)\ngoddard_nt_seaice_conc_monthly (Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration by NASA Team algorithm with Goddard QC, 1)\ngoddard_bt_seaice_conc_monthly (Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration by Bootstrap algorithm with Goddard QC, 1)\n https://polarwatch.noaa.gov/erddap/info/nsidcCDRiceSQshmday/index.htmlTable https://nsidc.org/data/g02202 (external link) https://polarwatch.noaa.gov/erddap/rss/nsidcCDRiceSQshmday.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nsidcCDRiceSQshmday&showErrors=false&email= NSIDC > National Snow and Ice Data Center, NOAA nsidcCDRiceSQshmday
https://polarwatch.noaa.gov/erddap/griddap/nsidcCDRiceSQnh1day https://polarwatch.noaa.gov/erddap/griddap/nsidcCDRiceSQnh1day.graph https://polarwatch.noaa.gov/erddap/files/nsidcCDRiceSQnh1day/ public Z-DEPRECATED - Sea Ice Concentration, NOAA/NSIDC Climate Data Record V3, Arctic, 25km, Science Quality, 1978-2019, Daily Alert: There is a newer version of this dataset. Please use Version 4 of the NSIDC Sea Ice Concentration CDR with ERDDAP ID: nsidcG02202v4nh1day. Link: https://polarwatch.noaa.gov/erddap/griddap/nsidcG02202v4nh1day.graph. Version 3 Summary: This data set NOAA/NSIDC Sea Ice Concentration CDR v3 (g02202) provides a passive microwave sea ice concentration climate data record (CDR) based on gridded brightness temperatures (TBs) from the Defense Meteorological Satellite Program (DMSP) series of passive microwave radiometers: the Special Sensor Microwave Imager (SSM/I) and the Special Sensor Microwave Imager/Sounder (SSMIS). The sea ice concentration CDR is an estimate of sea ice concentration that is produced by combining concentration estimates from two algorithms developed at the NASA Goddard Space Flight Center (GSFC): the NASA Team algorithm and the Bootstrap algorithm. The individual algorithms are processed and combined at National Snow and Ice Data Center (NSIDC) using brightness temperature data from Remote Sensing Systems, Inc. (RSS).  This product is designed to provide a consistent time series of sea ice concentrations (the fraction, or percentage, of ocean area covered by sea ice) from 1987 to the present which spans the coverage of several passive microwave instruments. The data are gridded on the NSIDC polar stereographic grid with 25 x 25 km grid cells, and are available in Network Common Data Format (NetCDF) file format. Each file contains a variable with the CDR concentration values as well as variables that hold the input NASA Team and Bootstrap concentrations for reference and a merged NASA Team/Bootstrap version of the Goddard sea ice concentrations that spans 1978 to the present made available as a longer-term analog of the CDR concentrations. Variables containing standard deviation, quality flags, and projection information are also included. Data are available via FTP.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][ygrid][xgrid]):\nseaice_conc_cdr (NOAA/NSIDC Climate Data Record of Passive Microwave Daily Northern Hemisphere Sea Ice Concentration, 1)\nstdev_of_seaice_conc_cdr (Passive Microwave Daily Northern Hemisphere Sea Ice Concentration Source Estimated Standard Deviation)\nmelt_onset_day_seaice_conc_cdr (Day of Snow Melt Onset Over Sea Ice, 1)\nqa_of_seaice_conc_cdr (Passive Microwave Daily Northern Hemisphere Sea Ice Concentration QC flags)\ngoddard_merged_seaice_conc (Goddard Edited Climate Data Record of Passive Microwave Daily Northern Hemisphere Sea Ice Concentration, Goddard Edited, 1)\ngoddard_nt_seaice_conc (Passive Microwave Daily Northern Hemisphere Sea Ice Concentration by NASA Team algorithm with Goddard QC, 1)\ngoddard_bt_seaice_conc (Passive Microwave Daily Northern Hemisphere Sea Ice Concentration by Bootstrap algorithm with Goddard QC, 1)\n https://polarwatch.noaa.gov/erddap/info/nsidcCDRiceSQnh1day/index.htmlTable https://nsidc.org/data/g02202 (external link) https://polarwatch.noaa.gov/erddap/rss/nsidcCDRiceSQnh1day.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nsidcCDRiceSQnh1day&showErrors=false&email= NSIDC > National Snow and Ice Data Center, NOAA nsidcCDRiceSQnh1day
https://polarwatch.noaa.gov/erddap/griddap/nsidcCDRiceSQnhmday https://polarwatch.noaa.gov/erddap/griddap/nsidcCDRiceSQnhmday.graph https://polarwatch.noaa.gov/erddap/files/nsidcCDRiceSQnhmday/ public Z-DEPRECATED - Sea Ice Concentration, NOAA/NSIDC Climate Data Record V3, Arctic, 25km, Science Quality, 1978-2019, Monthly Alert: There is a newer version of this dataset. Please use Version 4 of the NSIDC Sea Ice Concentration CDR with ERDDAP ID: nsidcG02202v4nhmday. Link: https://polarwatch.noaa.gov/erddap/griddap/nsidcG02202v4nhmday.graph. Version 3 Summary: This data set provides a Climate Data Record (CDR) of sea ice concentration from passive microwave data. It provides a consistent, daily and monthly time series of sea ice concentrations from 09 July 1987 through the most recent processing for both the north and south polar regions. In addition, three other sea ice concentration products are included with the CDR that extend the sea ice measurements back to 26 October 1978. However, these three products are not included in the official CDR because processing the older data in a way that follows the standards of a CDR is not currently possible. All data are on a 25 km x 25 km grid. Variables containing standard deviation, quality flags, and projection information are also included.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][ygrid][xgrid]):\nseaice_conc_monthly_cdr (NOAA/NSIDC Climate Data Record of Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration, 1)\nstdev_of_seaice_conc_monthly_cdr (Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration Source Estimated Standard Deviation)\nmelt_onset_day_seaice_conc_monthly_cdr (Monthly Day of Snow Melt Onset Over Sea Ice, 1)\nqa_of_seaice_conc_monthly_cdr (Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration QC flags)\ngoddard_merged_seaice_conc_monthly (Goddard Edited Climate Data Record of Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration, Goddard Edited, 1)\ngoddard_nt_seaice_conc_monthly (Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration by NASA Team algorithm with Goddard QC, 1)\ngoddard_bt_seaice_conc_monthly (Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration by Bootstrap algorithm with Goddard QC, 1)\n https://polarwatch.noaa.gov/erddap/info/nsidcCDRiceSQnhmday/index.htmlTable https://nsidc.org/data/g02202 (external link) https://polarwatch.noaa.gov/erddap/rss/nsidcCDRiceSQnhmday.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nsidcCDRiceSQnhmday&showErrors=false&email= NSIDC > National Snow and Ice Data Center, NOAA nsidcCDRiceSQnhmday
https://polarwatch.noaa.gov/erddap/griddap/nsidcCDRiceNRTshmday https://polarwatch.noaa.gov/erddap/griddap/nsidcCDRiceNRTshmday.graph https://polarwatch.noaa.gov/erddap/files/nsidcCDRiceNRTshmday/ public Z-DEPRECATED - Sea Ice Concentration, NOAA/NSIDC NRT Climate Data Record V1, Antarctic, 25km, Near Real-Time, 2016-Present, Monthly Alert: There is a newer version of this dataset. Please use Version 2 of the NSIDC NRT Sea Ice Concentration CDR with ERDDAP ID: nsidcG10016v2shmday. Link: https://polarwatch.noaa.gov/erddap/griddap/nsidcG10016v2shmday.graph. Version 1 Summary: This data set provides a Climate Data Record (CDR) of sea ice concentration from passive microwave data. It provides a consistent, daily and monthly time series of sea ice concentrations from 09 July 1987 through the most recent processing for both the north and south polar regions. In addition, three other sea ice concentration products are included with the CDR that extend the sea ice measurements back to 26 October 1978. However, these three products are not included in the official CDR because processing the older data in a way that follows the standards of a CDR is not currently possible. All data are on a 25 km x 25 km grid. Variables containing standard deviation, quality flags, and projection information are also included.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][ygrid][xgrid]):\nseaice_conc_monthly_cdr (NOAA/NSIDC Climate Data Record of Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration, 1)\nstdev_of_seaice_conc_monthly_cdr (Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration Source Estimated Standard Deviation)\nmelt_onset_day_seaice_conc_monthly_cdr (Monthly Day of Snow Melt Onset Over Sea Ice, 1)\nqa_of_seaice_conc_monthly_cdr (Passive Microwave Monthly Southern Hemisphere Sea Ice Concentration QC flags)\n https://polarwatch.noaa.gov/erddap/info/nsidcCDRiceNRTshmday/index.htmlTable https://nsidc.org/data/g10016 (external link) https://polarwatch.noaa.gov/erddap/rss/nsidcCDRiceNRTshmday.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nsidcCDRiceNRTshmday&showErrors=false&email= NSIDC > National Snow and Ice Data Center, NOAA nsidcCDRiceNRTshmday
https://polarwatch.noaa.gov/erddap/griddap/nsidcCDRiceNRTnhmday https://polarwatch.noaa.gov/erddap/griddap/nsidcCDRiceNRTnhmday.graph https://polarwatch.noaa.gov/erddap/files/nsidcCDRiceNRTnhmday/ public Z-DEPRECATED - Sea Ice Concentration, NOAA/NSIDC NRT Climate Data Record, Arctic, 25km, Near Real-Time, 2017-Present, Monthly Alert: There is a newer version of this dataset. Please use Version 2 of the NSIDC NRT Sea Ice Concentration CDR with ERDDAP ID: nsidcG10016v2nhmday. Link: https://polarwatch.noaa.gov/erddap/griddap/nsidcG10016v2nhmday.graph. Version 1 Summary: This data set provides a Climate Data Record (CDR) of sea ice concentration from passive microwave data. It provides a consistent, daily and monthly time series of sea ice concentrations from 09 July 1987 through the most recent processing for both the north and south polar regions. In addition, three other sea ice concentration products are included with the CDR that extend the sea ice measurements back to 26 October 1978. However, these three products are not included in the official CDR because processing the older data in a way that follows the standards of a CDR is not currently possible. All data are on a 25 km x 25 km grid. Variables containing standard deviation, quality flags, and projection information are also included.\n\ncdm_data_type = Grid\nVARIABLES (all of which use the dimensions [time][ygrid][xgrid]):\nseaice_conc_monthly_cdr (NOAA/NSIDC Climate Data Record of Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration, 1)\nstdev_of_seaice_conc_monthly_cdr (Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration Source Estimated Standard Deviation)\nmelt_onset_day_seaice_conc_monthly_cdr (Monthly Day of Snow Melt Onset Over Sea Ice, 1)\nqa_of_seaice_conc_monthly_cdr (Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration QC flags)\n https://polarwatch.noaa.gov/erddap/info/nsidcCDRiceNRTnhmday/index.htmlTable https://nsidc.org/data/g10016 (external link) https://polarwatch.noaa.gov/erddap/rss/nsidcCDRiceNRTnhmday.rss https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=nsidcCDRiceNRTnhmday&showErrors=false&email= NSIDC > National Snow and Ice Data Center, NOAA nsidcCDRiceNRTnhmday

 
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