摘要
利用地球辐射平衡试验 ( ERBE)和国际卫星云气候计划 ( ISCCP)提供的总云量、行星反射率资料 ,计算并分析了青藏高原地气系统年、月平均云对太阳短波吸收辐射的强迫 ,揭示了其与总云量的关系。结果表明 :高原的短波辐射云强迫与总云量有较好的非线性相关 ,呈幂指数形式 ,且季节变化明显 ;短波辐射云强迫的地理分布与高原云的分布配合较好 ,高原主体和北部是短波辐射云强迫的低值区 ,高原东南部和西部边缘迎风部位为强迫的高值区。
In terms of data provided by ERBE and ISCCP, effects of total cloudiness on earth atmosphere system absorbed shortwave cloud radiation forcing (SWCRF) are investigated over Qinghai Tibet Plateau on an annual and a monthly basis separately. It turns out that there is a good power law correlation between them,and both have obvious seasonal variations. The SWCRF's geographical distribution accords well with that of the total cloudiness over the region and its value is lower over the main and north parts, and higher over the south east part and the windward side of the west edge.
出处
《南京气象学院学报》
CSCD
2000年第1期124-129,共6页
Journal of Nanjing Institute of Meteorology
基金
国家攀登 B项目!"青藏高原第二次科学试验"资助
关键词
青藏高原
地气系统
短波吸收辐射
辐射强迫
云
Qinghai Tibet Plateau
earth atmosphere system
absorbed shortwave radiation
cloud radiation forcing
