CAJ | 학술논문

本文通过对1965—2005年华南地区降水和台风的观测资料分析，初步探讨了华南秋季降水与台风活动的关系，结果表明秋季华南台风活动偏少是造成秋季降水减少的重要原因之一。进一步研究表明，秋季海温对于影响华南秋季的台风活动（强度和路径）具有重要作用，从而对华南秋季降水产生影响：当赤道中东太平洋海表增（降）温，影响华南台风活动减少（增多）以致秋季少（多）雨。这种影响很可能是通过华南中低层纬向风的异常来实现的，即当赤道中东太平洋海温降低（增加）时，华南中低层风场偏东风异常增大（减小），从而容易（不易）引导台风西行影响华南而使华南降水增多（减少）。
본문통과대1965—2005년화남지구강수화태풍적관측자료분석，초보탐토료화남추계강수여태풍활동적관계，결과표명추계화남태풍활동편소시조성추계강수감소적중요원인지일。진일보연구표명，추계해온대우영향화남추계적태풍활동（강도화로경）구유중요작용，종이대화남추계강수산생영향：당적도중동태평양해표증（강）온，영향화남태풍활동감소（증다）이치추계소（다）우。저충영향흔가능시통과화남중저층위향풍적이상래실현적，즉당적도중동태평양해온강저（증가）시，화남중저층풍장편동풍이상증대（감소），종이용역（불역）인도태풍서행영향화남이사화남강수증다（감소）。
The observed relationship between autumn rainfall anomalies in the South China (SC)region and the ty-phoons activity,and the anomalous sea surface temperature characteristics has been examined using 41 a of the pre-cipitation data of 168 stations in SC,NCEP-NCAR reanalysis,and best track tropical cyclone data.To a great ex-tend,the abnormal of autumn precipitation in SC is determined by the Typhoons activity.When the SSTA (sea surface temperature anomaly)in eastern equatorial Pacific is negative (positive),the areas including the western tropical Pacific to South China Sea and the SC are dominated by anomalous eastern(western)wind,which is favor-able (not favorable)for typhoons on western Pacific moving westward and for the increasing(decreasing)of TIF index.This will lead to the increasing (reducing)typhoons numbers that influence SC and result in more autumn precipitation than average in SC.