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发布时间:2019-03-07 10:20:13来源:未知点击:

The Arctic lost an average of 34 000 square kilometres of sea ice per year between 1978 and 1996, says Claire Parkinson of NASA’s Goddard Space Flight Center in Greenbelt, Maryland, who has studied data from microwave instruments aboard various satellites. Parkinson, who will report her findings next month in Geophysical Research Letters, says that this represents the loss of 2.8 per cent of the ice per decade. There were regional variations, though: ice cover increased in the Gulf of St Lawrence,