Interdecadal Variability in Surface Solar Radiation over Northwest China and Its Possible Cause  

作　　者：ZHOU Lian-Tong 

机构地区：[1]Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beij＇ing 100190, China

出　　处：《Atmospheric and Oceanic Science Letters》2011年第2期103-108,共6页大气和海洋科学快报（英文版）

基　　金：supported by the Special Scientific Research Project for Public Interest(Grant No.GYHY201006021);the Knowledge Innovation Program of the Chinese Academy of Sciences(Grant No.KZCX2-EW-QN204);the National Basic Research Program of China(Grant No.2009CB421405);the National Natural Science Foundation of China(Grant Nos.40905027 and 40730952)

摘　　要：The present study investigates the interdecadal variability of seasonal mean surface solar radiation over Northwest China using station observations from 1961-2003. Spring and summer surface solar radiation over Northwest China was lower in the late 1970s through 1990s than in the 1960s through the mid-1970s, and fall and winter surface solar radiation displayed similar patterns. These results indicate that the decrease in spring and summer surface solar radiation may be associated with increased low-cloud cover over Northwest China. Rainfall anomalies were closely related to the low-cloud cover over Northwest China and with the Northern Hemisphere circumglobal teleconnection in spring, summer, and winter.The present study investigates the interdecadal variability of seasonal mean surface solar radiation over Northwest China using station observations from 1961-2003. Spring and summer surface solar radiation over Northwest China was lower in the late 1970s through 1990s than in the 1960s through the mid-1970s, and fall and winter surface solar radiation displayed similar pat- terns. These results indicate that the decrease in spring and summer surface solar radiation may be associated with increased low-cloud cover over Northwest China. Rainfall anomalies were closely related to the low-cloud cover over Northwest China and with the Northern Hemisphere circumglobal teleconnection in spring, summer, and winter.

关 键 词：surface solar radiation RAINFALL low-cloud cover circumglobal teleconnection 

分 类 号：P467[天文地球—大气科学及气象学] P422.1