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| Grid DAP Data | Sub- set | Table DAP Data | Make A Graph | W M S | Source Data Files | Acces- sible
| Title | Sum- mary | FGDC, ISO, Metadata | Back- ground Info | RSS | E | Institution | Dataset ID | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| data | graph | files | public | Sea Ice Concentration, NOAA/NSIDC NRT Climate Data Record V3, Southern Hemisphere, 25km, Near Real-Time, 2024-Present, Monthly |
| M | background
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| nsidcG10016v3shmday |
| Row Type | Variable Name | Attribute Name | Data Type | Value |
|---|---|---|---|---|
| attribute | NC_GLOBAL | _NCProperties | String | version=2,netcdf=4.8.1,hdf5=1.10.6 |
| attribute | NC_GLOBAL | acknowledgment | String | This project was supported in part by a grant from the NOAA Climate Data Record Program. The NASA Team and Bootstrap sea ice concentration algorithms were developed by Donald J. Cavalieri, Josefino C. Comiso, Claire L. Parkinson, and others at the NASA Goddard Space Flight Center in Greenbelt, MD. |
| attribute | NC_GLOBAL | cdm_data_type | String | Grid |
| attribute | NC_GLOBAL | cdr_data_type | String | grid |
| attribute | NC_GLOBAL | contributor_name | String | Walter N. Meier, Florence Fetterer, Ann Windnagel, J. Scott Stewart, Trey Stafford |
| attribute | NC_GLOBAL | contributor_role | String | principal investigator, author, author, software developer, software developer |
| attribute | NC_GLOBAL | Conventions | String | CF-1.11, ACDD-1.3 |
| attribute | NC_GLOBAL | creator_email | String | nsidc at nsidc.org |
| attribute | NC_GLOBAL | creator_name | String | NSIDC/NOAA |
| attribute | NC_GLOBAL | creator_type | String | institution |
| attribute | NC_GLOBAL | creator_url | String | https://nsidc.org/ |
| attribute | NC_GLOBAL | date_created | String | 2025-01-01T15:46:17Z |
| attribute | NC_GLOBAL | defaultGraphQuery | String | cdr_seaice_conc_monthly[(last)][(5837500.0):(-5337500.0)][(-3837500.0):(3737500.0)]&.draw=surface |
| attribute | NC_GLOBAL | geospatial_bounds | String | POLYGON ((-3950000 4350000, 3950000 4350000, 3950000 -3950000, -3950000 -3950000, -3950000 4350000)) |
| attribute | NC_GLOBAL | geospatial_bounds_crs | String | EPSG:3412 |
| attribute | NC_GLOBAL | geospatial_x_resolution | String | 25000 meters |
| attribute | NC_GLOBAL | geospatial_x_units | String | meters |
| attribute | NC_GLOBAL | geospatial_y_resolution | String | 25000 meters |
| attribute | NC_GLOBAL | geospatial_y_units | String | meters |
| attribute | NC_GLOBAL | grid_mapping_crs_wkt | String | PROJCS["NSIDC Sea Ice Polar Stereographic South",GEOGCS["Unspecified datum based upon the Hughes 1980 ellipsoid",DATUM["Not_specified_based_on_Hughes_1980_ellipsoid",SPHEROID["Hughes 1980",6378273,298.279411123061,AUTHORITY["EPSG","7058"]],AUTHORITY["EPSG","6054"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4054"]],PROJECTION["Polar_Stereographic"],PARAMETER["latitude_of_origin",-70],PARAMETER["central_meridian",0],PARAMETER["scale_factor",1],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["X",EAST],AXIS["Y",NORTH],AUTHORITY["EPSG","3412"]] |
| attribute | NC_GLOBAL | grid_mapping_false_easting | double | 0.0 |
| attribute | NC_GLOBAL | grid_mapping_false_northing | double | 0.0 |
| attribute | NC_GLOBAL | grid_mapping_GeoTransform | String | -3950000 25000 0 4350000 0 -25000 |
| attribute | NC_GLOBAL | grid_mapping_inverse_flattening | double | 298.279411123064 |
| attribute | NC_GLOBAL | grid_mapping_latitude_of_projection_origin | double | -90.0 |
| attribute | NC_GLOBAL | grid_mapping_long_name | String | NSIDC_SH_PolarStereo_25km |
| attribute | NC_GLOBAL | grid_mapping_longitude_of_prime_meridian | double | 0.0 |
| attribute | NC_GLOBAL | grid_mapping_name | String | polar_stereographic |
| attribute | NC_GLOBAL | grid_mapping_proj4text | String | +proj=stere +lat_0=-90 +lat_ts=-70 +lon_0=0 +k=1 +x_0=0 +y_0=0 +a=6378273 +b=6356889.449 +units=m +no_defs |
| attribute | NC_GLOBAL | grid_mapping_semi_major_axis | double | 6378273.0 |
| attribute | NC_GLOBAL | grid_mapping_spatial_ref | String | PROJCS["NSIDC Sea Ice Polar Stereographic South",GEOGCS["Unspecified datum based upon the Hughes 1980 ellipsoid",DATUM["Not_specified_based_on_Hughes_1980_ellipsoid",SPHEROID["Hughes 1980",6378273,298.279411123061,AUTHORITY["EPSG","7058"]],AUTHORITY["EPSG","6054"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4054"]],PROJECTION["Polar_Stereographic"],PARAMETER["latitude_of_origin",-70],PARAMETER["central_meridian",0],PARAMETER["scale_factor",1],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["X",EAST],AXIS["Y",NORTH],AUTHORITY["EPSG","3412"]] |
| attribute | NC_GLOBAL | grid_mapping_srid | String | urn:ogc:def:crs:EPSG::3412 |
| attribute | NC_GLOBAL | grid_mapping_standard_parallel | double | -70.0 |
| attribute | NC_GLOBAL | grid_mapping_straight_vertical_longitude_from_pole | double | 0.0 |
| attribute | NC_GLOBAL | grid_mapping_units | String | meters |
| attribute | NC_GLOBAL | history | String | Generated from https://nsidc.org/data/nsidc-0001 |
| attribute | NC_GLOBAL | id | String | https://doi.org/10.7265/j0z0-4h87 |
| attribute | NC_GLOBAL | infoUrl | String | https://nsidc.org/data/g10016/versions/3 |
| attribute | NC_GLOBAL | institution | String | NSIDC > National Snow and Ice Data Center |
| attribute | NC_GLOBAL | keywords | String | Earth Science > Cryosphere > Sea Ice > Sea Ice Concentration, Geographic Region > Polar, Geographic Region > Southern Hemisphere, Ocean > Southern Ocean, Ocean > Southern Ocean > Bellingshausen Sea, Ocean > Southern Ocean > Ross Sea, Ocean > Southern Ocean > Weddell Sea |
| attribute | NC_GLOBAL | keywords_vocabulary | String | NASA Global Change Master Directory (GCMD) Keywords, Version 17.1 |
| attribute | NC_GLOBAL | license | String | No constraints on data access or use |
| attribute | NC_GLOBAL | metadata_link | String | https://nsidc.org/data/g10016/versions/3 |
| attribute | NC_GLOBAL | naming_authority | String | org.doi.dx |
| attribute | NC_GLOBAL | platform | String | DMSP 5D-3/F17 > Defense Meteorological Satellite Program-F17 |
| attribute | NC_GLOBAL | processing_level | String | NOAA Level 3 |
| attribute | NC_GLOBAL | product_version | String | v03r00 |
| attribute | NC_GLOBAL | program | String | NOAA Climate Data Record Program |
| attribute | NC_GLOBAL | proj_crs_code | String | EPSG:3412 |
| attribute | NC_GLOBAL | project | String | NOAA/NSIDC passive microwave sea ice concentration climate data record |
| attribute | NC_GLOBAL | references | String | Comiso, J. C., and F. Nishio. 2008. Trends in the Sea Ice Cover Using Enhanced and Compatible AMSR-E, SSM/I, and SMMR Data. Journal of Geophysical Research 113, C02S07, doi:10.1029/2007JC0043257. ; Comiso, J. C., D. Cavalieri, C. Parkinson, and P. Gloersen. 1997. Passive Microwave Algorithms for Sea Ice Concentrations: A Comparison of Two Techniques. Remote Sensing of the Environment 60(3):357-84. ; Comiso, J. C. 1984. Characteristics of Winter Sea Ice from Satellite Multispectral Microwave Observations. Journal of Geophysical Research 91(C1):975-94. ; Cavalieri, D. J., P. Gloersen, and W. J. Campbell. 1984. Determination of Sea Ice Parameters with the NIMBUS-7 SMMR. Journal of Geophysical Research 89(D4):5355-5369. ; Cavalieri, D. J., C. l. Parkinson, P. Gloersen, J. C. Comiso, and H. J. Zwally. 1999. Deriving Long-term Time Series of Sea Ice Cover from Satellite Passive-Microwave Multisensor Data Sets. Journal of Geophysical Research 104(7): 15,803-15,814 ; Comiso, J.C., R.A. Gersten, L.V. Stock, J. Turner, G.J. Perez, and K. Cho. 2017. Positive Trend in the Antarctic Sea Ice Cover and Associated Changes in Surface Temperature. J. Climate, 30, 2251â€"2267, doi:10.1175/JCLI-D-16-0408.1 |
| attribute | NC_GLOBAL | sensor | String | SSMIS > Special Sensor Microwave Imager/Sounder |
| attribute | NC_GLOBAL | software_version_id | String | git@github.com:nsidc/seaice_ecdr.git@2daa616041a5ae87ffbdab3a590e51cf3a861609 |
| attribute | NC_GLOBAL | source | String | Generated from https://nsidc.org/data/nsidc-0001 |
| attribute | NC_GLOBAL | sourceUrl | String | (local files) |
| attribute | NC_GLOBAL | spatial_resolution | String | 25km |
| attribute | NC_GLOBAL | standard_name_vocabulary | String | CF Standard Name Table (v83, 17 October 2023) |
| attribute | NC_GLOBAL | summary | String | This data set provides a near-real-time (NRT) passive microwave sea ice concentration climate data record (CDR) based on gridded brightness temperatures (TBs) from the Defense Meteorological Satellite Program (DMSP) passive microwave radiometer: the Special Sensor Microwave Imager/Sounder (SSMIS) F17. 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 an NRT time series of sea ice concentrations (the fraction, or percentage, of ocean area covered by sea ice). 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. |
| attribute | NC_GLOBAL | testOutOfDate | String | now-68days |
| attribute | NC_GLOBAL | time_coverage_duration | String | P1M |
| attribute | NC_GLOBAL | time_coverage_end | String | 2025-01-01T00:00:00Z |
| attribute | NC_GLOBAL | time_coverage_resolution | String | P1M |
| attribute | NC_GLOBAL | time_coverage_start | String | 2024-07-01T00:00:00Z |
| attribute | NC_GLOBAL | title | String | Sea Ice Concentration, NOAA/NSIDC NRT Climate Data Record V3, Southern Hemisphere, 25km, Near Real-Time, 2024-Present, Monthly |
| dimension | time | double | nValues=7, evenlySpaced=false, averageSpacing=30 days 16h 0m 0s | |
| attribute | time | _ChunkSizes | uint | 512 |
| attribute | time | _CoordinateAxisType | String | Time |
| attribute | time | actual_range | double | 1.719792E9, 1.7356896E9 |
| attribute | time | axis | String | T |
| attribute | time | calendar | String | standard |
| attribute | time | coverage_content_type | String | coordinate |
| attribute | time | ioos_category | String | Time |
| attribute | time | long_name | String | ANSI date |
| attribute | time | standard_name | String | time |
| attribute | time | time_origin | String | 01-JAN-1970 00:00:00 |
| attribute | time | units | String | seconds since 1970-01-01T00:00:00Z |
| dimension | y | double | nValues=332, evenlySpaced=true, averageSpacing=-25000.0 | |
| attribute | y | _ChunkSizes | uint | 332 |
| attribute | y | _FillValue | double | NaN |
| attribute | y | actual_range | double | -3937500.0, 4337500.0 |
| attribute | y | axis | String | Y |
| attribute | y | coverage_content_type | String | coordinate |
| attribute | y | ioos_category | String | Location |
| attribute | y | long_name | String | y coordinate of projection |
| attribute | y | standard_name | String | projection_y_coordinate |
| attribute | y | units | String | meters |
| attribute | y | valid_range | double | -3950000.0, 4350000.0 |
| dimension | x | double | nValues=316, evenlySpaced=true, averageSpacing=25000.0 | |
| attribute | x | _ChunkSizes | uint | 316 |
| attribute | x | _FillValue | double | NaN |
| attribute | x | actual_range | double | -3937500.0, 3937500.0 |
| attribute | x | axis | String | X |
| attribute | x | coverage_content_type | String | coordinate |
| attribute | x | ioos_category | String | Location |
| attribute | x | long_name | String | x coordinate of projection |
| attribute | x | standard_name | String | projection_x_coordinate |
| attribute | x | units | String | meters |
| attribute | x | valid_range | double | -3950000.0, 3950000.0 |
| variable | cdr_seaice_conc_monthly_qa_flag | ubyte | time, y, x | |
| attribute | cdr_seaice_conc_monthly_qa_flag | _ChunkSizes | uint | 1, 332, 316 |
| attribute | cdr_seaice_conc_monthly_qa_flag | _FillValue | ubyte | 255 |
| attribute | cdr_seaice_conc_monthly_qa_flag | colorBarMaximum | double | 80.0 |
| attribute | cdr_seaice_conc_monthly_qa_flag | colorBarMinimum | double | 0.0 |
| attribute | cdr_seaice_conc_monthly_qa_flag | coverage_content_type | String | image |
| attribute | cdr_seaice_conc_monthly_qa_flag | flag_masks | ubyte | 1, 2, 4, 8, 16, 32, 64 |
| attribute | cdr_seaice_conc_monthly_qa_flag | flag_meanings | String | average_concentration_exceeds_0.15 average_concentration_exceeds_0.30 at_least_half_the_days_have_sea_ice_conc_exceeds_0.15 at_least_half_the_days_have_sea_ice_conc_exceeds_0.30 invalid_ice_mask_applied at_least_one_day_during_month_has_spatial_interpolation at_least_one_day_during_month_has_temporal_interpolation |
| attribute | cdr_seaice_conc_monthly_qa_flag | ioos_category | String | Quality |
| attribute | cdr_seaice_conc_monthly_qa_flag | long_name | String | NOAA/NSIDC CDR of Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration QA flags |
| attribute | cdr_seaice_conc_monthly_qa_flag | standard_name | String | status_flag |
| attribute | cdr_seaice_conc_monthly_qa_flag | units | String | 1 |
| attribute | cdr_seaice_conc_monthly_qa_flag | valid_range | ubyte | 0, 127 |
| variable | cdr_seaice_conc_monthly_stdev | float | time, y, x | |
| attribute | cdr_seaice_conc_monthly_stdev | _ChunkSizes | uint | 1, 332, 316 |
| attribute | cdr_seaice_conc_monthly_stdev | _FillValue | float | -1.0 |
| attribute | cdr_seaice_conc_monthly_stdev | colorBarMaximum | double | 0.1 |
| attribute | cdr_seaice_conc_monthly_stdev | colorBarMinimum | double | 0.0 |
| attribute | cdr_seaice_conc_monthly_stdev | ioos_category | String | Statistics |
| attribute | cdr_seaice_conc_monthly_stdev | long_name | String | NOAA/NSIDC CDR of Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration Source Estimated Standard Deviation |
| attribute | cdr_seaice_conc_monthly_stdev | units | String | 1 |
| attribute | cdr_seaice_conc_monthly_stdev | valid_range | float | 0.0, 1.0 |
| variable | cdr_seaice_conc_monthly | float | time, y, x | |
| attribute | cdr_seaice_conc_monthly | _ChunkSizes | uint | 1, 332, 316 |
| attribute | cdr_seaice_conc_monthly | _FillValue | float | 2.55 |
| attribute | cdr_seaice_conc_monthly | colorBarMaximum | double | 1.0 |
| attribute | cdr_seaice_conc_monthly | colorBarMinimum | double | 0.0 |
| attribute | cdr_seaice_conc_monthly | coverage_content_type | String | image |
| attribute | cdr_seaice_conc_monthly | ioos_category | String | Ice Distribution |
| attribute | cdr_seaice_conc_monthly | long_name | String | NOAA/NSIDC CDR of Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration |
| attribute | cdr_seaice_conc_monthly | standard_name | String | sea_ice_area_fraction |
| attribute | cdr_seaice_conc_monthly | units | String | 1 |
| attribute | cdr_seaice_conc_monthly | valid_range | float | 0.0, 1.0 |
The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.