Dataset Open Access

UHH Sea Ice Area Product

Doerr, Jakob; Notz, Dirk; Kern, Stefan

Abstract: This data set comprises time series of the monthly sea-ice area (SIA) in the Northern Hemisphere (1 file) and in the Southern Hemisphere (1 file). SIA is derived from sea-ice concentration (SIC, also sea-ice area fraction) data of the following products: Walsh (version 2, only Northern Hemisphere), OSI-450 / OSI-430-b, HadISST (version 2), NASA-Team and Comiso-Bootstrap - both from the NSIDC/NOAA SIC climate data record (version 3.1). The monthly SIA is either directly computed from monthly SIC data or is derived as the mean of all daily SIA values. If required, the observational gap at the pole is interpolated. If required, temporal interpolation is applied - both to fill temporal (up to a maximum of 7 consecutive days) and spatial (if less than 1000 non-contiguous missing grid cells per day) gaps.

Table of contents:

Northern Hemisphere: HadISST_nsidc monthly sea-ice area; HadISST_orig monthly sea-ice area; Comiso-Bootstrap monthly sea-ice area; NASA-Team monthly sea-ice area; OSI-SAF monthly sea-ice area; Walsh monthly sea-ice area;

Southern Hemisphere: HadISST_nsidc monthly sea-ice area; HadISST_orig monthly sea-ice area; Comiso-Bootstrap monthly sea-ice area; NASA-Team monthly sea-ice area; OSI-SAF monthly sea-ice area

Technical Info: standard_name: sea-ice area; long_name: algorithm_specific hemispheric sea-ice area time-series; dimension: 2040; temporalExtent_startDate: 1850-01-01; temporalExtent_endDate: 2019-12-31; temporalResolution: monthly; spatialResolution: none; spatialResolutionUnit: none; horizontalResolutionXdirection: none; horizontalResolutionYdirection: none; verticalResolution: none; verticalResolutionUnit: none; verticalStart: none; verticalEnd: none; instrumentName: various SMMR SSM/I SSMIS; instrumentType: various multifrequency_microwave_radiometer; instrumentLocation: various Nimbus-7 DMSP-f8 DMSP-f11 DMSP-f13 DMSP-17; instrumentProvider: various 

Methods: See description on https://icdc.cen.uni-hamburg.de/en/cryosphere/uhh-sea-ice-area-product.html

Units (all variables): 1e6 km2

geoLocations:

Northern Hemisphere: westBoundLongitude: -180.0 degrees East; eastBoundLongitude: 180.0 degrees East; southBoundLatitude: 35.0 degrees North; northBoundLatitude: 90.0 degrees North; geoLocationPlace: Northern Hemisphere

Southern Hemisphere: westBoundLongitude: -180.0 degrees east; eastBoundLongitude: 180.0 degrees East; southBoundLatitude: -90.0 degrees North; northBoundLatitude: -35.0 degrees North; geoLocationPlace: Southern Hemisphere

Size:

Northern Hemisphere: 1 file, 6 variables, 2040 elements each

Southern Hemisphere: 1 file, 5 variables, 2040 elements each

Format: netCDF

DataSources:

https://nsidc.org/data/g10010 [last accessed: 2019-09-13]

https://doi.org/10.15770/EUM_SAF_OSI_0008 [last accessed: 2021-03-16]

http://www.osi-saf.org/?q=content/global-sea-ice-concentration-interim-climate-data-record-release-2 [last accessed: 2021-03-16]

https://nsidc.org/data/g02202 [last accessed: 2020-08-14]

https://www.metoffice.gov.uk/hadobs/hadisst2/data/HadISST.2.2.0.0_sea_ice_concentration.nc.gz [last accessed: 2020-08-14]

Contact: uhhsia.ifm (at) uni-hamburg.de

Web page: https://icdc.cen.uni-hamburg.de/en/cryosphere/uhh-sea-ice-area-product.html

This data set can also be accessed from https://icdc.cen.uni-hamburg.de/en/cryosphere/uhh-sea-ice-area-product.html
Files (398.7 kB)
Name Size
01_UHH_SeaIceAreaProduct_SampleImage.png
md5:cf9bd16ac9e2d1381a30b855a78c16da 		117.5 kB Download
SeaIceArea__NorthernHemisphere__monthly__UHH__v2019_fv0.01.nc
md5:f7de1f649efa0c9f2bc2a7a31bebc743 		146.7 kB Download
SeaIceArea__SouthernHemisphere__monthly__UHH__v2019_fv0.01.nc
md5:fbcd2b1dcf715cca10acc42b36d600ed 		128.3 kB Download
uhh_seaicearea_product_metadata_v2019_fv0.01.xml
md5:e287cce8930608e878e94dac0a1e6d79 		6.2 kB Download
Publication date:
January 20, 2021
DOI:
10.25592/uhhfdm.8559

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Keyword(s):
Climate Research Marine Cryosphere Sea ice area Arctic Antarctic Time series monthly University of Hamburg University of Bergen ICDC
Subject(s):
Natural sciences
Earth and related environmental sciences
Related identifiers:
Derived from:
https://nsidc.org/data/g10010, http://www.osi-saf.org/?q=content/global-sea-ice-concentration-interim-climate-data-record-release-2, https://nsidc.org/data/g02202, https://www.metoffice.gov.uk/hadobs/hadisst2/data/HadISST.2.2.0.0_sea_ice_concentration.nc.gz, 10.15770/EUM_SAF_OSI_0008
Documented by:
https://icdc.cen.uni-hamburg.de/en/cryosphere/uhh-sea-ice-area-product.html
Previous versions:
10.25592/uhhfdm.8526
Communities:
License (for files):
Creative Commons Attribution 4.0 International

Versions

Version 2025_fv0.01 10.25592/uhhfdm.18163 Dec 5, 2025
Version 2024_fv0.01 10.25592/uhhfdm.11346 Mar 5, 2024
Version 2019_fv0.01 10.25592/uhhfdm.8559 Jan 20, 2021
Version v01_fv0.01 10.25592/uhhfdm.8526 Jan 18, 2021
Cite all versions? You can cite all versions by using the DOI 10.25592/uhhfdm.8525. This DOI represents all versions, and will always resolve to the latest one.

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