摘要
The temporal variations in storm rainfall during the first rainy season (FRS) in South China (SC) are investigated in this study. The results show that the inter-annual variations in storm rainfall during the FRS in SC seem to be mainly influenced by the frequency of storm rainfall, while both frequency and intensity affect the inter-decadal variations in the total storm rainfall. Using the definitions for the beginning and ending dates of the FRS, and the onset dates of the summer monsoon in SC, the FRS is further divided into two sub-periods, i.e., the frontal and monsoon rainfall periods. The inter-annual and inter-decadal variations in storm rainfall during these two periods are investigated here. The results reveal a significant out-of-phase correlation between the frontal and monsoon storm rainfall, especially on the inter-decadal timescale, the physical mechanism for which requires further investigation.
The temporal variations in storm rainfall during the first rainy season （FRS） in South China （SC） are investigated in this study. The results show that the inter-annual variations in storm rainfall during the FRS in SC seem to be mainly influenced by the frequency of storm rainfall, while both frequency and intensity affect the inter-decadal variations in the total storm rainfall. Using the definitions for the beginning and ending dates of the FRS, and the onset dates of the summer monsoon in SC, the FRS is further divided into two sub-periods, i.e., the frontal and monsoon rainfall periods. The inter-annual and inter-decadal variations in storm rainfall during these two periods are investigated here. The results reveal a significant out-of-phase correlation between the frontal and monsoon storm rainfall, especially on the in- ter-decadal timescale, the physical mechanism for which requires further investigation.
基金
supported jointly by the National Key Technologies R&D Program of China(Grant No.2008BAK50B02)
the National Basic Research Program of China(Grant No.2009CB421405)
the National Natural Science Foundation of China(Grant No.40730952)
关键词
夏季季风
时空变化
暴雨期
中国
前汛期
年代际变化
锋面
季节
the first rainy season in South China, the frontal storm rainfall, the monsoon storm rainfall, temporal variations
