RELATIONSHIPS BETWEEN THE SOUTH ASIA HIGH(SAH) AND WESTERN PACIFIC SUBTROPICAL ANTICYCLONE(WPSA) DURING SUMMER
Relationships between the South Asia High(SAH) and the western Pacific subtropical anticyclone(WPSA) during summer are investigated based on the NCEP/NCAR reanalysis data from 1951 to 2010.It is found that there exists a close link between these two systems,especially,their intensity indexes are much positively correlated in interannual variability and they are simultaneously strong (weak) by a chance of more than 70％.When SAH and WPSA are both strong (weak),the atmosphere circulation varies along with the strengthening (weakening) of EAJS,meridional (zonal) circulation in high latitudes,and positive (negative) EAP in Pacific.A westerly jet in mid-latitudes connects the two highs,while thermal anomalies between the Tibet Plateau plateau and the western Pacific influence the vertical circulation.South Asia high and the western Pacific subtropical high affect the overall configuration of the East Asian atmospheric circulation,which is another new point to know the interaction in East Asia.
climatologystatistical characteristicsatmospheric circulationSouth Asia Highwestern Pacific subtropical anticyclone
国家科技期刊平台
NSTL
万方数据
维普
