nsidcSeaIceConc1850 eng UTF8 dataset service STAR IT NOAA.GOV +1 301 683 3503 5830 University Research CT College Park MD 20740 USA coastwatch.info@noaa.gov pointOfContact 2026-05-13 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) 3 column 1440 0.25 row 240 0.25 temporal 2016 2629775.8808933003 area Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly 2019-09-03 creation 2019-09-03 issued coastwatch.noaa.gov nsidcSeaIceConc1850 John E. Walsh, William L. Chapman, Florence Fetterer, J. S. Stewart walsh@wx.atmos.uiuc.edu, chapman@faldo.atmos.uiuc.edu, fetterer@nsidc.org https://nsidc.org/data/g10010 information web browser Background Information Background information from the source information originator John E. Walsh, William L. Chapman, Florence Fetterer, J. S. Stewart walsh@wx.atmos.uiuc.edu, chapman@faldo.atmos.uiuc.edu, fetterer@nsidc.org contributor Observations from historical sources are the basis of this monthly gridded sea ice concentration product that begins in 1850. In 1979, these sources give way to a single source: concentration from satellite passive microwave data. The historical observations come in many forms: ship observations, compilations by naval oceanographers, analyses by national ice services, and others. Monthly sea ice concentration is given in a 1/4 degree latitude by 1/4 degree longitude grid. In addition to the concentration array, for each month a corresponding source array indicates where each of 16 possible sources is used. John E. Walsh, William L. Chapman, Florence Fetterer, J. S. Stewart walsh@wx.atmos.uiuc.edu, chapman@faldo.atmos.uiuc.edu, fetterer@nsidc.org https://nsidc.org/data/g10010 information web browser Background Information Background information from the source information pointOfContact 1850 historical NSIDC sea ice concentration theme Earth Science > Oceans > Sea Ice > Ice Extent Earth Science > Cryosphere > Sea Ice > Sea Ice Concentration Earth Science > Cryosphere > Sea Ice > Ice Extent theme GCMD Science Keywords NOAA NESDIS PolarWatch project time latitude longitude sea_ice_area_fraction source cell_area theme CF The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information. NOAA NESDIS PolarWatch largerWorkCitation project Unidata Common Data Model Grid largerWorkCitation project eng geoscientificInformation 1 -180.0 180.0 30.125 89.875 seconds 1850-01-15T12:00:00Z 2017-12-16T12:00:00Z Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly 2019-09-03 creation 2019-09-03 issued John E. Walsh, William L. Chapman, Florence Fetterer, J. S. Stewart walsh@wx.atmos.uiuc.edu, chapman@faldo.atmos.uiuc.edu, fetterer@nsidc.org https://nsidc.org/data/g10010 information web browser Background Information Background information from the source information originator John E. Walsh, William L. Chapman, Florence Fetterer, J. S. Stewart walsh@wx.atmos.uiuc.edu, chapman@faldo.atmos.uiuc.edu, fetterer@nsidc.org contributor Observations from historical sources are the basis of this monthly gridded sea ice concentration product that begins in 1850. In 1979, these sources give way to a single source: concentration from satellite passive microwave data. The historical observations come in many forms: ship observations, compilations by naval oceanographers, analyses by national ice services, and others. Monthly sea ice concentration is given in a 1/4 degree latitude by 1/4 degree longitude grid. In addition to the concentration array, for each month a corresponding source array indicates where each of 16 possible sources is used. ERDDAP griddap 1 -180.0 180.0 30.125 89.875 seconds 1850-01-15T12:00:00Z 2017-12-16T12:00:00Z tight ERDDAPgriddapDatasetQueryAndAccess https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850 ERDDAP:griddap ERDDAP-griddap ERDDAP's griddap service (a flavor of OPeNDAP) for gridded data. Add different extensions (e.g., .html, .graph, .das, .dds) to the base URL for different purposes. download Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly 2019-09-03 creation 2019-09-03 issued John E. Walsh, William L. Chapman, Florence Fetterer, J. S. Stewart walsh@wx.atmos.uiuc.edu, chapman@faldo.atmos.uiuc.edu, fetterer@nsidc.org https://nsidc.org/data/g10010 information web browser Background Information Background information from the source information originator John E. Walsh, William L. Chapman, Florence Fetterer, J. S. Stewart walsh@wx.atmos.uiuc.edu, chapman@faldo.atmos.uiuc.edu, fetterer@nsidc.org contributor Observations from historical sources are the basis of this monthly gridded sea ice concentration product that begins in 1850. In 1979, these sources give way to a single source: concentration from satellite passive microwave data. The historical observations come in many forms: ship observations, compilations by naval oceanographers, analyses by national ice services, and others. Monthly sea ice concentration is given in a 1/4 degree latitude by 1/4 degree longitude grid. In addition to the concentration array, for each month a corresponding source array indicates where each of 16 possible sources is used. OPeNDAP 1 -180.0 180.0 30.125 89.875 seconds 1850-01-15T12:00:00Z 2017-12-16T12:00:00Z tight OPeNDAPDatasetQueryAndAccess https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850 OPeNDAP:OPeNDAP OPeNDAP An OPeNDAP service for gridded data. Add different extensions (e.g., .html, .das, .dds) to the base URL for different purposes. download Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly 2019-09-03 creation 2019-09-03 issued John E. Walsh, William L. Chapman, Florence Fetterer, J. S. Stewart walsh@wx.atmos.uiuc.edu, chapman@faldo.atmos.uiuc.edu, fetterer@nsidc.org https://nsidc.org/data/g10010 information web browser Background Information Background information from the source information originator John E. Walsh, William L. Chapman, Florence Fetterer, J. S. Stewart walsh@wx.atmos.uiuc.edu, chapman@faldo.atmos.uiuc.edu, fetterer@nsidc.org contributor Observations from historical sources are the basis of this monthly gridded sea ice concentration product that begins in 1850. In 1979, these sources give way to a single source: concentration from satellite passive microwave data. The historical observations come in many forms: ship observations, compilations by naval oceanographers, analyses by national ice services, and others. Monthly sea ice concentration is given in a 1/4 degree latitude by 1/4 degree longitude grid. In addition to the concentration array, for each month a corresponding source array indicates where each of 16 possible sources is used. Open Geospatial Consortium Web Map Service (WMS) 1 -180.0 180.0 30.125 89.875 seconds 1850-01-15T12:00:00Z 2017-12-16T12:00:00Z tight GetCapabilities https://coastwatch.noaa.gov/erddap/wms/nsidcSeaIceConc1850/request?service=WMS&version=1.3.0&request=GetCapabilities OGC:WMS OGC-WMS Open Geospatial Consortium Web Map Service (WMS) download physicalMeasurement seaice_conc byte Sea Ice Concentration (Percent) seaice_source byte Source of Sea Ice Concentration Data gridcell_area_2d float Grid Cell Area STAR IT NOAA.GOV +1 301 683 3503 5830 University Research CT College Park MD 20740 USA coastwatch.info@noaa.gov distributor OPeNDAP DAP/2.0 https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html order Data Subset Form ERDDAP's version of the OPeNDAP .html web page for this dataset. Specify a subset of the dataset and download the data via OPeNDAP or in many different file types. download https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph order Make-A-Graph Form ERDDAP's Make-A-Graph .html web page for this dataset. Create an image with a map or graph of a subset of the data. mapDigital dataset Apr 19 2020: netCDF modified via nco tools to expand dimension of the grid_cell_area variable for compatability with ERDDAP: ncap2 -s gridcell_area_2d[time,latitude,longitude]= Gridcell_Area, Jan 27 2020: downloaded zip package including netCDF file from ftp://sidads.colorado.edu/pub/DATASETS/NOAA/G10010_V2/ This record was created from dataset metadata by ERDDAP Version 2.29.0