Danish Meteorological Institute Multisource Sea Ice Concentration Composite (DMI-MSC-SIC)

The DMI-MSC-SIC provides global sea ice concentration from 1st of January 1982 to 31st of December 2024. The dataproduct combines sea ice concentration information from various sources including passive microwave observations, from the SMMR and SSM/I(S) sensors (OSI-450-a and SICCI-HR-SIC) and the AMSR-E and AMSR2 sensors (OSI-458) , and manually derived sea ice charts from US National Ice Charts (NICs) , Finish Meteorological Insitute (FMI) and Swedish Meteorological and Hydrological Institute (SMHI). Various filters and a bias correction have been apllied to ensure consistency and gap-filling has been performed where necessary to provide a gap-free product. The dataset is Level 4 and is provided in a 0.05 regular latitude/longitude grid. Associated to this dataset is a paper in preparation: A new global multi-source sea ice concentration composite This work was funded by: Copernicus Climate Change Service (C3S), the Copernicus Arctic Regional Reanalysis (CARRA) and the National Center for Climate Research (NCKF) at DMIDMI-MSC-SIC数据集提供了1982年1月1日至2024年12月31日的全球海冰浓度数据。本数据产品整合了多源海冰浓度信息，涵盖被动微波观测（passive microwave observations）数据：来自SMMR与SSM/I(S)传感器的OSI-450-a、SICCI-HR-SIC数据集，以及AMSR-E、AMSR2传感器的OSI-458数据集；同时包含来自美国国家冰况图（National Ice Charts, NICs）、芬兰气象研究所（Finnish Meteorological Institute, FMI）与瑞典气象水文研究所（Swedish Meteorological and Hydrological Institute, SMHI）的人工解译海冰图。研究团队已通过多种滤波处理与偏差校正保障数据一致性，并在必要时开展间隙填充，以生成无间隙数据集。该数据集为四级（Level 4）数据产品，采用0.05°的常规经纬网格格式存储。 本数据集关联一篇待发表论文：《新型全球多源海冰浓度合成数据集》（A new global multi-source sea ice concentration composite）。 本研究获得哥白尼气候变化服务局（Copernicus Climate Change Service, C3S）、哥白尼北极区域再分析项目（Copernicus Arctic Regional Reanalysis, CARRA）以及丹麦气象研究所（DMI）下属国家气候研究中心（National Center for Climate Research, NCKF）资助。