CAJ | 학술논문

基于地面观测资料，应用EOF分解、曲线拟合、Mann-Kendall突变检验、小波分析等方法，分析了中国中东部地区总云量的变化趋势和周期。结果表明，中国中东部地区总云量从西南到东北逐渐减少，但年平均总云量标准差呈东北—西南向的带状分布，与中国雨带的分布形势相似。1985年以来中国中东部各地区年平均总云量一致减少，华北地区减少最快，四川盆地减少较慢，华北地区和四川盆地总云量在1990年前后由平稳变化开始加速减少，中东部不同地区总云量变化的周期不同。
기우지면관측자료，응용EOF분해、곡선의합、Mann-Kendall돌변검험、소파분석등방법，분석료중국중동부지구총운량적변화추세화주기。결과표명，중국중동부지구총운량종서남도동북축점감소，단년평균총운량표준차정동북—서남향적대상분포，여중국우대적분포형세상사。1985년이래중국중동부각지구년평균총운량일치감소，화북지구감소최쾌，사천분지감소교만，화북지구화사천분지총운량재1990년전후유평은변화개시가속감소，중동부불동지구총운량변화적주기불동。
Based on the surface observation data, the trend, mutation and cycle of total cloud amount over middle and east of China were analyzed by using EOF decomposition, Curve fitting, Mann-Kendall Mutagenicity test and Wavelet analysis methods. Total cloud amount gradually decreases from the southwest to the northeast of China. However, the spatial distribution of the standard deviation of annual total cloud are different. It presents zonal distribution from northeast to southwest and is similar to the distribution of the rain belt. Annual average of total cloud amount consistently reduces since 1985, and the downward trend is faster in northern China and is relatively slower in Sichuan Basin. The total cloud amounts of northern China and Sichuan Basin are accelerated reduced from 1990. Cycles of total cloud are different from area to area in middle and east of China.