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《RESEARCH OF ENVIRONMENTAL SCIENCES》 1995-01
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Numerical Simulation of Chemical Process in Stratiform Precipitation

ZHANG Yuanbang;ZHANG Xingjun;LI Jinlong(Center of Environmental Scicnces,Peking University,Beijing 100871)QIN Yu(Department of Geophysics,Peking University,Beijing 100871)  
A more detailed chemical process involved in an one-dimensional,time-dependent,physi-cochemical model of stratiform clouds is studied.The transmission process between gaseous and aque-ous phases, he transformation of cloud water to rainwater and the collision process are deaIt with by means of chemical equations. Based on the above approach the acidification of precipitation and wet re-moval of pollutants are simulated.The numerical tests show that the concentrations of components in the upper cloud and rainwater decrease with time gradually,but to the rainwater on the ground,it has peak profiles. In later precipitation the pH of rainwater depends mainly on the concentrations of O_3 and SO_2. In rainwater,the majority of results from aerosols,from NH3 gas,and from gases and aerosols equally.In average,the below-cloud scavenging of ,,or has a proportion between 60%and 80%.The oxidation of S(Ⅳ)by H_2O_2 is more im-portant than that by O_3 in initial precipitation,but less important in late precipitation.
【Fund】: “八五”攻关酸雨课题
【CateGory Index】: P426.612
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【References】
Chinese Journal Full-text Database 2 Hits
1 Wang Bao'an Zhang Yuanhang(Center of Environmental Sciences, Peking University, Beijing, 100871)Zhang Zheng Qin Yu (Department of Geophysics, Peking University, Beijing, 100871);THE COMPARISON OF CHEMICAL COMPOSITION BETWEEN PRECIPITATION AND CLOUD WATER AT LUSHAN IN SPRING[J];Environmental Chemistry;1996-03
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【Citations】
Chinese Journal Full-text Database 4 Hits
1 Shen Ji, Zhao Qianxue, Zhao Dianwu (Research Center for Eco-Environmental Sciences, Academia Sinica Beijing);MECHANISM OF AQUEOUS OXIDATION OF S(IV) FOR BELOW-CLOUD SCAVENGING TRACE GASES[J];Acta Scientiae Circumstantiae;1989-01
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3 Zhang Yuanhang, Li Jinlong, Tang Xiaoyan (Center of Environmental Sciences, Peking University, Beijing 100871);SCAVENGING BELOW-CLOUD——EULERIAN MODEL[J];Acta Scientiae Circumstantiae;1993-03
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 Xie Wenzhang,Li Zhaoyong,Zhong Changqing(South China Institute for Environmental Sciences,Guangzhou 510655);Study of Acid Rain Pollution and Control in Guangdong Province[J];Chongqing Environmental Science;2002-05
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5 Xu Ling Qin Yu(Dcpartment of Grophysics, Peking University, Beijing, 100871);THE PARAMETERIZATION OF WET REMOVAL PROCESSES OF GASES UNDER CLOUD BASE[J];Environmental Chemistry;1992-01
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9 Sheng Peixuan, Mao Jietai, Wang Jianmin, Lu Qing (Department of Geophisics, Peking University, Beijing, 100871);TRANSPORT OF POLLUTANTS ASSOCIATED WITH COLD FRONT IN SOUTH CHINA IN SPRING[J];Acta Scientiae Circumstantiae;1992-01
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【Co-references】
Chinese Journal Full-text Database 6 Hits
1 Bi Mutian Chen Danhua Li Xin Li Xiaozhen Yu Zhongju Sun Qingrui Wang Meirong(Department of Technical Physics,Peking University, Beijing, 100871);THE STUDY ON ACID PRECIPITATION IN SPRING IN THE BAIYUN MOUNTAIN AND TV TOWER DISTRICT, GUANGZHOU CITY[J];Environmental Chemistry;1992-06
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Chinese Journal Full-text Database 4 Hits
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