The comparative analysis of pre-flood season precipitation and water vapor transportation over guangdong before and after "Hiatus"

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Fan, Lingli^1

South China Sea Atmosphere Ocean Research Center, Guangdong Ocean University, Zhanjiang

524088, China^1

关键词: Absolute humidity;    Comparative analysis;    Flood season;    Precipitation data;    Skin temperatures;    Southern China;    Vapor transportation;    Water vapor transport;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/5/052028/pdf
DOI  :  10.1088/1755-1315/121/5/052028

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Relation between pre-flood season precipitation and water vapor transport in Guangdong was analysed by using the monthly observed precipitation data, reanalysis data of ERA, NCEP/NCAR, and OAFlux during 1979-2015, and the differences between before/after global warming "hiatus" were studied. Results showed that, after "hiatus", during the pre-flood season, skin-temperature, evaporation, and the absolute humidity over the ocean near to Southern China was decreasing, and over land was increasing. So, the water cycle over the ocean had slowed down and over land had speed up. The absolute humidity difference between the ocean and the land was reduced. However, at the same time, the total wind speed in Southern China had decreased. So, the water vapor transport from the ocean to the land had reduced. The Eastern Guangdong had an anomalous convergence of meridional water vapor transport, led to increased precipitation; but in Western Guangdong, there was no meridional water vapor transport, so precipitation had a decrease.