1959—2020年江西省持续区域性高温过程特征  

Characteristics of Persistent Regional High-Temperature Processesin Jiangxi Province During 1959-2020

作　　者：刘文英[1] 孙素琴 刘冬梅[3] 田俊 Liu Wenying;Sun Suqin;Liu Dongmei;Tian Jun(Agro-Meteorological Center of Jiangxi Province,Nanchang 330096,China;The Meteorological Observatory of Jiangxi Province,Nanchang 330096,China;Jiangxi Meteorological Agricultural Center,Nanchang 330096,China)

机构地区：[1]江西省农业气象中心,江西南昌330096 [2]江西省气象台,江西南昌330096 [3]江西省气象信息中心,江西南昌330096

出　　处：《气象与减灾研究》2021年第4期251-256,共6页Meteorology and Disaster Reduction Research

基　　金：江西省气象局重点科研项目(编号:JX2020Z09);南昌市农业气象重点实验室开放研究基金重点项目(编号:2019NNZS101).

摘　　要：利用江西省81个国家气象站气温观测资料,综合考虑高温过程的强度、发生面积和持续时间等要素,运用江西省持续区域性高温过程的判别方法和指标,分析1959—2020年江西省持续区域性高温过程的时空分布及变化特征。结果表明:江西省共发生持续区域性高温过程271次,最强高温过程出现在2003年7月8日—8月10日,累计影响范围4.79×10^(6) km^(2),高温综合指数达到4.27。江西省持续区域性高温过程发生强度和频次较多的区域主要位于东北部和中部;历年发生频率最高为8次/a,其整体呈增加趋势。江西省持续区域性高温过程的年最强过程指数呈“先减小后增大”趋势,1993年以来其强度明显增加。Using meteorological data from 81 national weather stations in Jiangxi province,comprehensively considering factors such as the intensity,area and duration of the high temperature process,the method and indicators for determining the continuous regional high temperature process in Jiangxi province were obtained,The temporal and spatial distribution characteristics of persistent regional high-temperature processes in Jiangxi province from 1959 to 2020 were analyzed.The results showed that the persistent regional high-temperature processes occurred 271 times in the past 62 years.The comprehensive index of persistent regional high-temperature process was 4.27,which occurred from July 8 to August 10,2003,and the accumulation influence area was 4.79×10^(6) km^(2).The persistent regional high-temperature process in Jiangxi showed obvious spatial characteristics.Regions with higher intensity and frequency of persistent regional high-temperature process mainly concentrated in northeast of Jiangxi and central Jiangxi.The occurrence of persistent regional high-temperature processes in Jiangxi presented obvious increasing trends,with the maximum frequency 8 times per year over the past 62 years.The annual maximum index of persistent regional high-temperature process reduced first then increased,especially with a significant increase since 1993.

关 键 词：高温天气 持续时间 强度 指标 时空变化 

分 类 号：P463.1[天文地球—大气科学及气象学]