Long-term variations of major atmospheric compositions observed at the background stations in three key areas of China
作者机构：Meteorological Observation CenterChina Meteorological AdministrationBeijing100081China Zhejiang University of TechnologyHangzhou310014China Minzu University of ChinaBeijing100081China
出 版 物：《Advances in Climate Change Research》 (气候变化研究进展（英文版）)
年 卷 期：2020年第11卷第4期
页 面：370-380页
核心收录：
学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0709[理学-地质学] 07[理学] 0708[理学-地球物理学] 070602[理学-大气物理学与大气环境] 0706[理学-大气科学] 0816[工学-测绘科学与技术] 0825[工学-航空宇航科学与技术] 0704[理学-天文学]
基 金：under the auspices of the National Key Research and Development Program of China(2017YFC1501702) the Natural Science Foundation of China(91644223 and 41805027)
主 题：Atmospheric compositions Background observations Long-term variation Trend Coordinated control of PM and ozone China
摘 要：Atmospheric compositions and acid rain are closely related to atmospheric environment,weather,and climate *** this study,the concentration levels and long-term trends of CO_(2),CH_(4),O_(3),PM_(2.5),PM_(10),and acid rain were presented at the *** global baseline station in Qinghai,Shangdianzi and Lin an regional background stations in the North China Plain(NCP)and the Yangtze River Delta region(YRD)of China based on the data observed until *** increasing trends of CO_(2) were found at all of these *** ***,the concentration levels and growth rate were consistent with the average values in the Northern Hemisphere(NH)and those observed at the Mauna Loa station in *** CH_(4) also showed a upward tendency similar to that observed in *** with the observations at *** global baseline station,the CO_(2) and CH_(4) mole fractions were higher at Shangdianzi and Lin an regional background stations,indicating the important contributions of anthropogenic activities to the regional background level of CO_(2) and CH_(4).The annual averaged surface ozone showed increasing trends at *** and Shangdianzi stations,whereas no clear trend was found at Lin an *** variations in the patterns of aerosol concentrations at Shangdianzi and Lin an were found according to the PM_(2.5) or PM_(10) ***,the aerosol concentrations at both stations shown declining trends since the ***,two periods of high particle concentrations occurred in 2006-2007 and *** annual mean aerosol concentrations have continuously decreased after 2013-2014,indicating the effectiveness of pollution control in the NCP and YRD,especially since the implementation of the‘Action Plan for Prevention and Control of Air Pollution’in September *** analysis of aerosol with acid rain showed that the period with high concentrations of aerosols in the early years was consistent with that of severe
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