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Interaction of SCGT in southern hemisphere mid-latitudes and East Asia circulation

Source:      Pubdate:2019-08-21      Hits:805

SCGT spreads to the east along southern hemisphere mid-latitudes and its interaction with circulation in South Asia and subtropical zone in East Asia area. 


8-phase spread figure of 20-30d oscillation dry and wet anomaly in northern hemisphere South and East Asia in summer: South Asia tropical precipitation zone’s (1) beginning, (2) maturity, (3) formation an d ( 4) spread to the east and north to the lower Yangtze region, in (5)-(8) phases, the opposite rainfall anomaly zone changes similarly with each phase lasts for about 3 days (Yang,2009) 


Function of SCGT 

(1) SCGT changes regional precipitation regime; 

(2) SCGT strengthens/weakens South and East Asia’s cyclonic activities; 

(3) SCGT adjusts the East Asian subtropical monsoon system (outburst/end, suspend and strength).