UHH Sea Ice Area Product

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 SAF OSI-450a SIC climate data record / OSI-430a SIC interim climate data record, ESA-CCI+ phase 1 Higher Resolution SIC climate data record (Lavergne et al., 2023), HadISST (version 2), NASA-Team and Comiso-Bootstrap - both from the NOAA/NSIDC SIC climate data record (version 4.0). 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; ESA-CCI+ 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; ESA-CCI+ 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: 2076; temporalExtent_startDate: 1850-01-01; temporalExtent_endDate: 2023-09-30; 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://www.cen.uni-hamburg.de/en/icdc/data/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, 7 variables, 2088 elements each (latest month with valid data is element 2085) Southern Hemisphere: 1 file, 6 variables, 2088 elements each (latest month with valid data is element 2085) Format: netCDF DataSources: https://nsidc.org/data/g10010 [last accessed: 2022-10-01] https://doi.org/10.15770/EUM_SAF_OSI_0013 [last accessed: 2023-03-10] https://doi.org/10.15770/EUM_SAF_OSI_0014 [last accessed: 2023-11-07] https://nsidc.org/data/g02202 [last accessed: 2024-01-24] https://www.metoffice.gov.uk/hadobs/hadisst2/data/HadISST.2.2.0.0_sea_ice_concentration.nc.gz [last accessed: 2023-01-09] https://dx.doi.org/10.5285/eade27004395466aaa006135e1b2ad1a [Last accessed: 2023-03-10] Contact: uhhsia.ifm (at) uni-hamburg.de Web page: https://www.cen.uni-hamburg.de/en/icdc/data/cryosphere/uhh-sea-ice-area-product.html

搜集汇总

背景与挑战

背景概述

该数据集是汉堡大学发布的月度海冰面积产品，包含北半球和南半球从1850年至2023年的时间序列数据，数据来源于多个卫星遥感源。数据集主要用于气候和冰冻圈研究，采用netCDF格式，文件较小，便于分析全球海冰变化趋势。