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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 | ||
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data | graph | files | public | Sea Ice Concentration, NOAA/NSIDC NRT Climate Data Record V3, Northern Hemisphere, 25km, Near Real-Time, 2024-Present, Daily | ![]() | M | background![]() | ![]() | ![]() |
| nsidcG10016v3nh1day |
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 | acknowledgement | 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 | 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 | 2024-12-31T11:01:29Z |
attribute | NC_GLOBAL | defaultGraphQuery | String | cdr_seaice_conc[(last)][(5837500.0):(-5337500.0)][(-3837500.0):(3737500.0)]&.draw=surface |
attribute | NC_GLOBAL | geospatial_bounds | String | POLYGON ((-3850000 5850000, 3750000 5850000, 3750000 -5350000, -3850000 -5350000, -3850000 5850000)) |
attribute | NC_GLOBAL | geospatial_bounds_crs | String | EPSG:3411 |
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 North",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",-45],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","3411"]] |
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 | -3850000 25000 0 5850000 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_NH_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=-45 +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 North",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",-45],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","3411"]] |
attribute | NC_GLOBAL | grid_mapping_srid | String | urn:ogc:def:crs:EPSG::3411 |
attribute | NC_GLOBAL | grid_mapping_standard_parallel | double | 70.0 |
attribute | NC_GLOBAL | grid_mapping_straight_vertical_longitude_from_pole | double | -45.0 |
attribute | NC_GLOBAL | grid_mapping_units | String | meters |
attribute | NC_GLOBAL | history | String | Generated from https://nsidc.org/data/nsidc-0080 |
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 | CONTINENT > NORTH AMERICA > CANADA > HUDSON BAY, Continent > North America > Canada > Hudson Bay, Earth Science > Cryosphere > Sea Ice > Sea Ice Concentration, Geographic Region > Arctic, Geographic Region > Northern Hemisphere, Geographic Region > Polar, Ocean > Arctic Ocean, Ocean > Arctic Ocean > Barents Sea, Ocean > Arctic Ocean > Beaufort Sea, Ocean > Arctic Ocean > Chukchi Sea, Ocean > Atlantic Ocean > North Atlantic Ocean > Davis Straight, OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF ST LAWRENCE, Ocean > Atlantic Ocean > North Atlantic Ocean > North Sea, Ocean > Atlantic Ocean > North Atlantic Ocean > Norwegian Sea, OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > SVALBARD AND JAN MAYEN, Ocean > Pacific Ocean, Ocean > Pacific Ocean > North Pacific Ocean > Bering Sea, Ocean > Pacific Ocean > North Pacific Ocean > Sea Of Okhotsk |
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:3411 |
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-0080 |
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 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 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-5days |
attribute | NC_GLOBAL | time_coverage_duration | String | P1D |
attribute | NC_GLOBAL | time_coverage_end | String | 2025-02-13T00:00:00Z |
attribute | NC_GLOBAL | time_coverage_resolution | String | P1D |
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, Northern Hemisphere, 25km, Near Real-Time, 2024-Present, Daily |
dimension | time | double | nValues=228, evenlySpaced=true, averageSpacing=1 day | |
attribute | time | _CoordinateAxisType | String | Time |
attribute | time | actual_range | double | 1.719792E9, 1.7394048E9 |
attribute | time | axis | String | T |
attribute | time | calendar | String | proleptic_gregorian |
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 |
attribute | time | valid_range | double | 0.0, 30000.0 |
dimension | y | double | nValues=448, evenlySpaced=true, averageSpacing=-25000.0 | |
attribute | y | _FillValue | double | NaN |
attribute | y | actual_range | double | -5337500.0, 5837500.0 |
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 | m |
attribute | y | valid_range | double | -5350000.0, 5850000.0 |
dimension | x | double | nValues=304, evenlySpaced=true, averageSpacing=25000.0 | |
attribute | x | _FillValue | double | NaN |
attribute | x | actual_range | double | -3837500.0, 3737500.0 |
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 | m |
attribute | x | valid_range | double | -3850000.0, 3750000.0 |
variable | cdr_seaice_conc_interp_spatial_flag | ubyte | time, y, x | |
attribute | cdr_seaice_conc_interp_spatial_flag | _FillValue | ubyte | 255 |
attribute | cdr_seaice_conc_interp_spatial_flag | colorBarMaximum | double | 20.0 |
attribute | cdr_seaice_conc_interp_spatial_flag | colorBarMinimum | double | 0.0 |
attribute | cdr_seaice_conc_interp_spatial_flag | flag_masks | ubyte | 1, 2, 4, 8, 16, 32 |
attribute | cdr_seaice_conc_interp_spatial_flag | flag_meanings | String | 19v_tb_value_interpolated 19h_tb_value_interpolated 22v_tb_value_interpolated 37v_tb_value_interpolated 37h_tb_value_interpolated pole_hole_spatially_interpolated_(Arctic_only) |
attribute | cdr_seaice_conc_interp_spatial_flag | ioos_category | String | Quality |
attribute | cdr_seaice_conc_interp_spatial_flag | long_name | String | NOAA/NSIDC CDR of Passive Microwave Sea Ice Concentration spatial interpolation flags |
attribute | cdr_seaice_conc_interp_spatial_flag | standard_name | String | status_flag |
attribute | cdr_seaice_conc_interp_spatial_flag | units | String | 1 |
attribute | cdr_seaice_conc_interp_spatial_flag | valid_range | ubyte | 0, 63 |
variable | cdr_seaice_conc_qa_flag | ubyte | time, y, x | |
attribute | cdr_seaice_conc_qa_flag | _FillValue | ubyte | 255 |
attribute | cdr_seaice_conc_qa_flag | colorBarMaximum | double | 80.0 |
attribute | cdr_seaice_conc_qa_flag | colorBarMinimum | double | 0.0 |
attribute | cdr_seaice_conc_qa_flag | flag_masks | ubyte | 1, 2, 4, 8, 16, 32, 64, 128 |
attribute | cdr_seaice_conc_qa_flag | flag_meanings | String | BT_weather_filter_applied NT_weather_filter_applied Land_spillover_filter_applied No_input_data invalid_ice_mask_applied spatial_interpolation_applied temporal_interpolation_applied melt_start_detected |
attribute | cdr_seaice_conc_qa_flag | ioos_category | String | Quality |
attribute | cdr_seaice_conc_qa_flag | long_name | String | NOAA/NSIDC CDR of Passive Microwave Sea Ice Concentration QA flags |
attribute | cdr_seaice_conc_qa_flag | standard_name | String | status_flag |
attribute | cdr_seaice_conc_qa_flag | units | String | 1 |
attribute | cdr_seaice_conc_qa_flag | valid_range | ubyte | 0, 255 |
variable | cdr_seaice_conc_interp_temporal_flag | ubyte | time, y, x | |
attribute | cdr_seaice_conc_interp_temporal_flag | _FillValue | ubyte | 255 |
attribute | cdr_seaice_conc_interp_temporal_flag | colorBarMaximum | double | 60.0 |
attribute | cdr_seaice_conc_interp_temporal_flag | colorBarMinimum | double | 0.0 |
attribute | cdr_seaice_conc_interp_temporal_flag | comment | String | Value of 0 indicates no temporal interpolation occurred. Values greater than 0 and less than or equal to 55 are of the form 'AB' where 'A' indicates the number of days prior to the current day and 'B' indicates the number of days after the current day used to linearly interpolate the data. If either A or B are zero, the value was extrapolated from that date rather than interpolated. A value of 255 indicates that temporal interpolation could not be accomplished. |
attribute | cdr_seaice_conc_interp_temporal_flag | flag_meanings | String | no_temporal_interp 1_day_after 2_days_after 3_days_after 1_day_prior 1_day_prior_and_1_day_after 1_day_prior_and_2_days_after 1_day_prior_and_3_days_after 1_day_prior_and_4_days_after 1_day_prior_and_5_days_after 2_days_prior 2_days_prior_and_1_day_after 2_days_prior_and_2_days_after 2_days_prior_and_3_days_after 2_days_prior_and_4_days_after 2_days_prior_and_5_days_after 3_days_prior 3_days_prior_and_1_day_after 3_days_prior_and_2_days_after 3_days_prior_and_3_days_after 3_days_prior_and_4_days_after 3_days_prior_and_5_days_after 4_days_prior_and_1_day_after 4_days_prior_and_2_days_after 4_days_prior_and_3_days_after 4_days_prior_and_4_days_after 4_days_prior_and_5_days_after 5_days_prior_and_1_day_after 5_days_prior_and_2_days_after 5_days_prior_and_3_days_after 5_days_prior_and_4_days_after 5_days_prior_and_5_days_after |
attribute | cdr_seaice_conc_interp_temporal_flag | flag_values | ubyte | 0, 1, 2, 3, 10, 11, 12, 13, 14, 15, 20, 21, 22, 23, 24, 25, 30, 31, 32, 33, 34, 35, 41, 42, 43, 44, 45, 51, 52, 53, 54, 55 |
attribute | cdr_seaice_conc_interp_temporal_flag | ioos_category | String | Quality |
attribute | cdr_seaice_conc_interp_temporal_flag | long_name | String | NOAA/NSIDC CDR of Passive Microwave Sea Ice Concentration temporal interpolation flags |
attribute | cdr_seaice_conc_interp_temporal_flag | standard_name | String | status_flag |
attribute | cdr_seaice_conc_interp_temporal_flag | units | String | 1 |
attribute | cdr_seaice_conc_interp_temporal_flag | valid_range | ubyte | 0, 55 |
variable | cdr_seaice_conc | double | time, y, x | |
attribute | cdr_seaice_conc | _FillValue | double | NaN |
attribute | cdr_seaice_conc | ancillary_variables | String | cdr_seaice_conc_stdev cdr_seaice_conc_qa_flag |
attribute | cdr_seaice_conc | colorBarMaximum | double | 1.0 |
attribute | cdr_seaice_conc | colorBarMinimum | double | 0.0 |
attribute | cdr_seaice_conc | coverage_content_type | String | image |
attribute | cdr_seaice_conc | ioos_category | String | Ice Distribution |
attribute | cdr_seaice_conc | long_name | String | NOAA/NSIDC CDR of Passive Microwave Sea Ice Concentration |
attribute | cdr_seaice_conc | standard_name | String | sea_ice_area_fraction |
attribute | cdr_seaice_conc | units | String | 1 |
attribute | cdr_seaice_conc | valid_range | double | 0.0, 1.0 |
variable | cdr_seaice_conc_stdev | float | time, y, x | |
attribute | cdr_seaice_conc_stdev | _FillValue | float | NaN |
attribute | cdr_seaice_conc_stdev | colorBarMaximum | double | 0.1 |
attribute | cdr_seaice_conc_stdev | colorBarMinimum | double | 0.0 |
attribute | cdr_seaice_conc_stdev | ioos_category | String | Statistics |
attribute | cdr_seaice_conc_stdev | long_name | String | NOAA/NSIDC CDR of Passive Microwave Sea Ice Concentration Source Estimated Standard Deviation |
attribute | cdr_seaice_conc_stdev | units | String | 1 |
attribute | cdr_seaice_conc_stdev | 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.