【摘要】 本文取上世纪后50年至2003年度冬季渤海地区气温作为与渤海冬季冰情有关的气候指标。分析得出,渤海地区冬季气温随着年代呈上升趋势,特别是80年代中期至本世纪初尤为明显。受其影响,渤海冬季的冰情时空分布状况发生了较大变化。其特点是:初冰日较多年平均值推后、终冰日较多年平均值提前,冰期较多年平均值偏短,冰厚较多年平均值偏薄,结冰范围(沿岸固定冰宽度和浮冰外缘线)较多年平均值偏小,甚至有些海区已多年未曾见到海冰了。更多还原

【Abstract】 By using the winter air temperature data of the Bo-hai sea area from 1951 to 2003 for the climate guideline of the ice condition.Then seek out that the winter air temperature of the Bo-hai sea area goes up year after year,especially from 1980s to this early century.It result in biggish movement of the spatio-temporal transformation of the Bo-hai sea ice.The characteristic is that,the early ice day delays than the long-term mean,the end ice day is ahead of the long-term mean,the ice age is shorter,the thickness of the ice is thinner,the range of the ice is smaller.Some sea area does not appear sea-ice for several years.更多还原