摘要
将中国584个气象台站分为8个区域,分析了1961—2011年冬季全国及各区域降水量和降水频率,研究中国冬季降水变化特征,并探讨冬季各区域降水的突变性。结果表明:1961—2011年中国冬季降水量呈增加趋势、降水频率呈下降趋势。我国西北西区、西北东区、青藏高原区和东北区降水量和降水频率均呈不同程度增加趋势,其中西北西区2个要素上都呈显著增加趋势;长江中下游区、华南区和华北区降水量趋于不同程度增加,降水频率呈不同程度减少趋势,以长江中下游区和华南区变化最明显。20世纪90年代和2000年后之有较大变化,2000年后降水量变化较大,全国区域平均降水量在1987年发生了突变。
Divide 584 meteorological stations in China into 8 regions,analyze the precipitation and precipitation frequency across the country and various regions during the winter of 1961-2011,study the characteristics of winter precipitation variation in China,and explore the abrupt changes in winter precipitation in various regions.The results show that from 1961 to 2011,the winter precipitation in China showed an increasing trend,while the precipitation frequency showed a downward trend.The precipitation and frequency in the northwest western region,the northwest eastern region,the Qinghai-Tibet Plateau region,and the northeast region of China all show an increasing trend to varying degrees,with a significant increase in both elements in the northwest western region;The precipitation in the middle and lower reaches of the Yangtze River,South China,and North China tends to increase to varying degrees,and the frequency of precipitation decreases to varying degrees,with the most significant changes in the middle and lower reaches of the Yangtze River and South China.There was a significant change between the 1990s and after 2000,with significant changes in precipitation after 2000.The national regional average precipitation experienced a sudden change in 1987.
作者
张雨
杜雪松
丛宇辰
Zhang Yu(Gongzhuling Meteorological Bureau,Changchun,Jilin 136100)
出处
《农业灾害研究》
2023年第7期163-165,共3页
Journal of Agricultural Catastrophology
关键词
冬季降水
降水总量
降水频率
变化特征
Winter precipitation
Total precipitation
Precipitation frequency
Changing characteristics
