Impact of pressure system anomaly over mid-high latitude on decadal variability of East Asia summer monsoon

摘要

East Asia summer monsoon (EASM) is an important subcomponent in weather and climate change over East Asia, especially, over the eastern of China. It has evident decadal variability. Many factors might influence EASM's strength changing, such as the Western Pacific subtropical high, the air flow of across equator from Southern Hemisphere, Tibetan, etc. However, in our studies, we found that the air pressure system anomaly over mid-high latitude can affect the decadal variability of EASM from surface to mid-high troposphere. This study focuses on the mid-high latitude region between 30o and 55oN extending from 70o eastward to 120Eo (MHLR).