Features of aerosol optical depth and its relation to extreme temperatures in China during 1980–2001

作     者：HU Ting SUN Zhaobo LI Zhaoxin HU Ting 1,2 SUN Zhaobo 1,2,LI Zhaoxin 3 1 Jiangsu Key Laboratory of Meteorological Disaster,Nanjing University of Information Science and Technology,Nanjing 210044,China 2 The Department of Atmospheric Science,Nanjing University of Information Science and Technology,Nanjing 210044,China 3 Laboratoire de Meteorologie Dynamique,CNRS,France

作者机构：Jiangsu Key Laboratory of Meteorological Disaster Nanjing University of Information Scienceand Technology Nanjing 210044 China The Department of Atmospheric Science Nanjing University of Information Science andTechnology Nanjing 210044 China Laboratoire de Meteorologie Dynamique CNRS France 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2011年第30卷第2期

页      面：33-45页

核心收录：

学科分类：081803[工学-地质工程] 07[理学] 08[工学] 070602[理学-大气物理学与大气环境] 0818[工学-地质资源与地质工程] 0706[理学-大气科学] 

基　　金：Foundation of Jiangsu Key Laboratory of Meteorological Disaster under contract No. KLME05001 

主　　题：aerosol optical thickness extreme temperature index space/time pattern trend correlation 

摘      要：Based on Total Ozone Mapping Spectrometer （TOMS） monthly aerosol optical thickness （AOT） measurements in 1980–2001 a study is made of space/time patterns and difference between land and sea of AOT 0.50 μm thick over China,which are put into correlation analysis with synchronous extreme temperature indices （warm/cold day and night）.Results suggest that 1） the long-term mean AOT over China is characterized by typical geography,with pronounced land-sea *** AOT has significant seasonality and its seasonal difference is diminished as a function of latitude.2） On the whole,the AOT displays an appreciably increasing trend,with the distinct increase in the eastern Qinghai-Tibetan plateau and SW China,North China,the mid-lower Changjiang （MiLY） valley as well as the South China Sea,but marginal decrease over western/northern Xinjiang and part of South China.3） The AOT over land and sea is marked by conspicuous intra-seasonal and -yearly oscillations,with remarkable periods at one-,two-yr and more （as interannual periods）.4） Land AOT change is well correlated with extremely temperature ***,the correlations of AOT to the extreme temperature indices are more significant in Eastern China with 110 ° E as the *** high-correlation regions are along the Southern China coastline,the Loess Plateau and the Sichuan Basin,and even higher in North China Plain and the mid-lower Changjiang River reaches.5） Simulations of LMDZ-regional model indicate that aerosol effects may result in cooling all over China,particularly in Eastern *** contribution of aerosol change may result in more decrease in the maximum temperature than the minimum,with decrease of 0.11/0.08 K for zonal average,respectively.