| The climate characteristics of global water vapor transport and global water balance are analyzed by using the NCEP/NCAR reanalysis data set from 1958 to 1998. Seasonal variations of water vapor transport over east Asia monsoon region are studied, especially that in summer season. The results indicate that there are four vapor inflow corridors to fetch China: southwest corridor, South China Sea corridor, southeast corridor and northwest corridor. It shows impact of south Asia monsoon, South China Sea monsoon, subtropical monsoon and middle latitude westerly belt on summer rainfall anomaly over China, respectively. The results of EOF show that there are three rainfall patterns in China in summer such as midst rainfall pattern, south rainfall pattern and north rainfall pattern. The relations between the three rainfall patterns and three patterns of water vapor transport are discussed by projection, and influencing areas of different vapor inflow corridors are located by correlation. At last, the major physical factors including SSTA and atmosphere circulation anomalies that affect water vapor transport and their interactions are discussed. |
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