Probability of Sea Ice Extent: Between Eastern Greenland and Iceland 1821-1956@en

Our data set includes nine probability maps of sea ice extent, available in .jpeg and shapfiles. They were created from historical maps of sea ice extent off Iceland dating back to 1877 compiled by Koch (1945) that we digitized. We use these maps in combination with sea ice charts from the Danish Meteorological Institute (DMI) and Koch's sea ice index from 1820 to 1939 to provide spatial maps of estimated sea ice extent between Iceland and Greenland back to 1821. […]

本数据集包含九幅海冰范围概率图，存储格式为.jpeg与shapefiles。该系列图件基于我们完成数字化处理的历史地图制作而成：这些历史地图由Koch（1945）整理，可追溯至1877年的冰岛周边海域海冰范围资料。本研究结合上述数字化历史地图、丹麦气象研究所（DMI）提供的海冰冰情图，以及Koch于1820年至1939年编制的海冰指数，生成了可追溯至1821年的冰岛与格陵兰之间海域估算海冰范围的空间分布图。[...]