CAJ | 학술논문

基于1961-2008年天山区域24站云量的逐日资料，使用相关和M原K检验等统计方法，分析中国天山区域云量的时空变化特征及其与降水的关系。结果表明：（1）春季、秋季和冬季，伊犁河谷以北总云量最多，夏季则在中天山和东天山的部分区域最多，低云量在夏季占总云量的比重最大；（2）区域平均总云量在春季和秋季呈减少趋势；低云量在各季节均呈增加趋势，尤其在冬季和夏季；（3）总云量的年代际变化不明显，而低云量自20世纪90年代至今，都处在高值期。（4）低云量在春季、夏季和秋季，均在20世纪90年代，而冬季在2000年左右发生了由少到多的气候突变；总云量未发生明显的气候突变。（5）总云量和低云量均和同期降水有较好的相关性。春季低云量和夏季降水，相关系数可达0.52。
기우1961-2008년천산구역24참운량적축일자료，사용상관화M원K검험등통계방법，분석중국천산구역운량적시공변화특정급기여강수적관계。결과표명：（1）춘계、추계화동계，이리하곡이북총운량최다，하계칙재중천산화동천산적부분구역최다，저운량재하계점총운량적비중최대；（2）구역평균총운량재춘계화추계정감소추세；저운량재각계절균정증가추세，우기재동계화하계；（3）총운량적년대제변화불명현，이저운량자20세기90년대지금，도처재고치기。（4）저운량재춘계、하계화추계，균재20세기90년대，이동계재2000년좌우발생료유소도다적기후돌변；총운량미발생명현적기후돌변。（5）총운량화저운량균화동기강수유교호적상관성。춘계저운량화하계강수，상관계수가체0.52。
Based on daily cloud coverage data at 24 stations in Tianshan Mountain area from 1961 to 2008, the spatial and temporal variation features of cloud coverage in Tianshan Mountain area were analyzed by the statistical methods, such as correlation and Mann-Kendall Test. The results showed:(1)the total cloud coverage in Yili valley and to its north was the most, but the low cloud coverage was the most in some areas of middle and eastern Tianshan mountains and the ratio between low cloud coverage and total cloud coverage was the most in summer;(2)the regional average total cloud coverage presented decreasing trend in spring and autumn, and the low cloud coverage for four seasons all presented increasing trends, especially in winter and summer;(3)the decadal variation of the total cloud coverage was not obvious, and it had been in high value period since 1990;(4)the climate jump of the low cloud coverage had occurred in spring, summer and autumn in 1990s, and in winter around 2000;(5)both of total cloud coverage and low cloud coverage had a good correlation with precipitation, especially the low cloud coverage in spring with summer precipitation and the correlation coefficient was 0.54.