UHH Sea Ice Area Product

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: Comiso-Bootstrap monthly sea-ice area; NOAA-NSIDC CDR monthly sea-ice area; NASA-Team monthly sea-ice area; OSI SAF monthly sea-ice area Southern Hemisphere: Comiso-Bootstrap monthly sea-ice area; NOAA-NSIDC CDR 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: 2100; temporalExtent_startDate: 1850-01-01; temporalExtent_endDate: 2024-12-31; 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 cen.uni-hamburg.de/en/icdc/data/cryosphere/uhh-sea-ice-area-product.html Units (all variables): 1e6 km 2 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, 4 variables, 2100 elements each (latest month with valid data is element 2099) Southern Hemisphere: 1 file, 4 variables, 2100 elements each (latest month with valid data is element 2099) Format: netCDF DataSources: doi.org/10.15770/EUM_SAF_OSI_0013 [last accessed: 2025-01-17] doi.org/10.15770/EUM_SAF_OSI_0014 [last accessed: 2025-01-17] nsidc.org/data/g02202 [last accessed: 2025-04-16] Contact: uhhsia.ifm (at) uni-hamburg.de Web page: cen.uni-hamburg.de/en/icdc/data/cryosphere/uhh-sea-ice-area-product.html