近64年长沙市高温热浪事件统计分析  

Statistics Analysis of Heat Wave Events in Changsha in Recent 64 Years

作　　者：傅帅[1] 蒋勇[1] 张小泉 朱歆炜 彭晶晶 陈舒慧[5] Fu Shuai Jiang Yong Zhang Xiaoquan Zhu Xinwei Peng Jingjing Chen Shuhui(Institute of Space Weather, Nanjing University of Information Science ＆ Technology, Nanjing 210044 Wuyi Meteorological Service, Zhejiang, Wuyi 321200 Hunan Meteorological Service, Changsha 410118 Changsha Meteorological Service, Changsha 410205 Naniing University of Information Science ＆ Technology, Nanjing 210044)

机构地区：[1]南京信息工程大学空间天气研究所,南京210044 [2]浙江省金华市武义县气象局,武义321200 [3]湖南省气象局,长沙410118 [4]长沙市气象局,长沙410205 [5]南京信息工程大学,南京210044

出　　处：《气象科技》2016年第6期991-997,共7页Meteorological Science and Technology

基　　金：湖南省气象局2015年短平快课题(XQKJ15B008)资助

摘　　要：为了增强对高温热浪事件的认识,给相关部门科学制定应急预案提供依据,本文利用逐日最高气温资料,依据高温热浪定义,对长沙市近64年来高温热浪事件进行统计分析。结果表明,1长沙市年均高温日30.6d,年均高温热浪2.16次。高温日、高温热浪事件集中在6—9月,且以7月出现最为频繁。2长沙市高温热浪事件发生频次和强度呈明显阶段性变化特征:20世纪50—60年代中期变化平稳或呈缓慢增多(增强)趋势,70—90年代末呈偏少(偏弱)趋势,21世纪以来呈偏多(偏强)趋势。3城市化造成的热岛效应在一定程度上加剧了高温热浪强度。Based on the daily maximum temperature data from the Mapoling weather station in Changsha in recent 64 years,with the criteria for recognizing heat wave events,a statistical analysis is conducted on the characteristics of heat wave events over Changsha,so as to strengthen the people＇s awareness of heat wave events,and make scientific emergency plans in advance.The study shows that：（1）The numbers of annual averaged high temperature days and heat wave events are 30.6and 2.16,respectively;high temperature days are more common between June and September than other months;and July is the hottest month.（2）The frequency and intensity of heat wave show a stepwise variation characteristic in the last 64years：the frequency is basically stable or slightly increasing（strengthening）from the 1950 sto the middle 1960 s,followed by a decreasing（weakening）from the 1970 sto the late 1990 syears,and after2000,significantly increasing;the intensity is also strengthening.（3）The study also found that the urban heat island effect has intensified the heat wave intensity to some extent after 2000.

关 键 词：高温热浪 高温有效积温 全球变暖 热岛效应 

分 类 号：P467[天文地球—大气科学及气象学]