论文部分内容阅读
本文使用了ＷＤＣ－Ａ提供的按ＷＭＯ标准格式化的ＳＧＲＩＤ海冰资料（１９７３～１９８９）和ＮＳＩＤＣ提供的ＳＭＭＲ和ＳＭＭ／１的亮温微波资料（１９７８～１９９４），将这些资料同化处理使海温序列延长为１９７３～１９９４年。利用上述资料研究海冰的长期变化趋势，发现７０年代前期海冰迅速增多到中期达最大值，后期到８０年代前期迅速减少到最少，８０年代海冰持续偏少或在平均值附近振动，９０年代前期海冰又开始缓慢增多。但总值仍比７０年代前、中期少的多。另外，海冰的区域性变化差异很大，特别是威德尔海区的海冰其变化转折期都先于其它海区的变化，具有领先和正反馈于其它冰区的海冰。
In this paper, we use the data of SGRID sea ice prepared by WDC-A according to WMO standard (1973 ~ 1989) and the SMMR and SMM / 1 data of microwaves (1978 ~ 1994) provided by NSIDC to assimilate these data The temperature sequence was extended from 1973 to 1994. Using the above data to study the long-term trend of sea ice, it is found that the sea ice rapidly increased to the maximum in the middle of the 1970s and rapidly decreased to a minimum in the late 1980s. In the 1980s, the sea ice continued to lag slightly or vibrate around the average 90 Sea ice began to slowly increase in the early period. But the total value is still much less than before the mid-1970s. In addition, the regional variations of sea ice are quite different. In particular, the transition of sea ice in Weddell Sea is preceded by the changes in other sea areas, with sea ice leading and positively fed back to other ice regions.