1980～2014年中国中东部持续性霾天气的多尺度变化特征  

An Analysis of the Multi-scale Variations of Persistent Haze Events in Central and Eastern China from 1980 to 2014

作　　者：王素 黄刚[1,2] 胡开明 王林 WANG Su;HUANG Gang;HU Kaiming;WANG Lin(State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029;University of Chinese Academy of Sciences,Beijing 100049;Center for Monsoon System Research,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100190;Key Laboratory of Regional Climate-Environment for Temperate East Asia,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029)

机构地区：[1]中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室,北京100029 [2]中国科学院大学,北京100049 [3]中国科学院大气物理研究所季风系统研究中心,北京100190 [4]中国科学院东亚区域气候—环境重点实验室,北京100029

出　　处：《气候与环境研究》2020年第1期103-112,共10页Climatic and Environmental Research

基　　金：中国科学院战略性先导科技专项XDA20060501;国家自然科学基金41425019、41831175和41721004~~

摘　　要：对1980~2014年中国中东部地区324个台站的持续性霾天气的时空变化和相关气象影响因子进行分析,结果表明:中东部地区年平均持续性霾事件和其在所有霾事件的贡献比例逐年增加,增长率分别为0.79(10 a)^-1和2.7%(10 a)^-1。主要表现为3个大值区:华北平原地区(包括山西省、京津冀地区)、长江三角洲和四川盆地东部,增加最显著的区域位于黄淮地区,增长率分别为6.3(10 a)^-1、13.95 d(10 a)^-1。1月是持续性霾事件的高发月,月均2.56 d。夏季和秋季持续性霾事件增加最为明显,增长率分别为0.38(10 a)^-1和0.46(10 a)^-1。不利的气象条件,如静风日数的增加,风速和大风日数的减少,以及不利的环流形势,如东亚冬季风的减弱,都可能造成持续性霾天气的增加和异常维持。The spatial and temporal variations of persistent haze events and their related impact factors were analyzed by using 324 stations in the central and eastern China during 1980-2014.The results show that the annual average frequency of persistent haze events and their contributions to total haze events increase year by year,with growth rates of 0.79(10 a)^-1 and 2.7%(10 a)^-1,respectively.It is represented by three large-value areas:The North China Plain(including Shanxi Province,Beijing-Tianjin-Hebei region),the Yangtze River Delta,and the eastern Sichuan Basin.The most significant increase appears mainly in Huang-Huai area,with a growth rate of 6.3(10 a)^-1 and 13.95 d(10 a)^-1.At the same time,persistent haze events show obvious seasonal and monthly changes.January is the highest incidence month with 2.56 d,meanwhile high frequency appears in summer and autumn,with a growth rate of 0.38(10 a)^-1 and 0.46(10 a)^-1.Unfavorable meteorological conditions,such as increasing windless days,decreasing wind speed and gale days,and adverse circulation situations,such as the weakening of the East Asian winter monsoon,have resulted in an increase in persistent hazy days and its abnormal maintenance.

关 键 词：持续性霾事件 非持续性霾事件 霾日数 

分 类 号：P49[天文地球—大气科学及气象学]