适当冷空气对秋季台风暴雨增幅作用研究  

Impact of Weak Cold Air on the Enhancement of Rainstorms Caused by Autumn Typhoons

作　　者：黄莉 白龙 李紫甜 HUANG Li;BAI Long;LI Zitian(Nanning Meteorological Bureau,Nanning 530022,China)

机构地区：[1]南宁市气象局,广西南宁530022

出　　处：《灾害学》2018年第2期38-44,共7页Journal of Catastrophology

基　　金：中国气象局预报员专项(CMAYBY2014-051);广西气象局重点项目(桂气科201302);南宁市科技局项目(20153257)

摘　　要：对1980-2016年9-11月进入广西影响区域的秋季台风,分析有无冷空气作用下的台风暴雨差异,研究结果显示:适当冷空气对台风暴雨有明显的增幅作用,而较强的冷空气和无冷空气都不利于台风暴雨生成,有适当冷空气参与影响的台风造成的暴雨站点增幅达83%,较强冷空气则导致暴雨站点减幅73%,无冷空气参与影响减幅达87%,有适当冷空气与无冷空气影响台风暴雨站数相差达15倍。并对两组相似台风个例1223号台风"山神"和9027号台风"迈克"、0814台风"黑格比"和9615台风"莎莉"进行有无冷空气作用下的对比分析,分析结果显示在台风移动路径、台风强度、形势场、暖湿气流补充都较为相似的情况下,适当的冷空气参与影响是秋季台风暴雨增幅的主要因素。The differences between rainstorms caused by autumn typhoons affecting Guangxi with and without the influence of cold air,are analyzed.The study time period is between September and November,from 1980 to 2016.The research shows that:the rain has a significant increase under the presence of weak cold air.While it is unfavorable to form rainstorms when the cold air is relatively strong or there is no cold air.The amount of the stations where rainstorms occur increases 83%when the cold air is weak.It decreases 73%and 87%when the cold air is relatively strong and when there is no cold air,respectively.The amount of stations where rainstorms occur with the influence of cold air can be 15 times larger than without that of cold air.Also,a contrast analysis is performed between two pairs of similar typhoons named Son～Tinh(1223)and Mike(9027),as well as Hagupit(0814)and Sally(9615).Each pair of the typhoons have similar routes,strength,situations and the supplements of warm and humid air,but only differ in whether they are under the influence of cold air or not.The results show that weak cold air is the major factor to intensify the rainstorms caused by autumn typhoons.

关 键 词：冷空气 秋季台风 暴雨增幅 广西 

分 类 号：X43[环境科学与工程—灾害防治] P45[天文地球—大气科学及气象学]