Study on the Relationship between Acid Rain Characteristics and Weather Conditions in Nanchang  

南昌市酸雨特征与气象条件关系分析研究(英文)

作　　者：蔡哲[1] 贺志明[1] 唐春燕[2] 吴琼[1] 

机构地区：[1]江西省气象科学研究所,江西南昌330046 [2]江西省气象台,江西南昌330046

出　　处：《Meteorological and Environmental Research》2010年第6期49-52,65,共5页气象与环境研究（英文版）

基　　金：Supported by Major Project of Chinese National Program for Fundamental Research and Development("973" Program)(2005CB42- 208);Meteorological Science and Technology Innovation Foundation of Jiangxi Province,China(2006KJC-X1006)

摘　　要：Based on the rainfall monitoring data and high altitude meteorological data,the present situation of acid rain pollution in Nanchang City was analyzed and the forming factors of acid rain were revealed. The results showed that acid rain in Nanchang had the characteristics of high acidity and frequency,and the pH value of rainfall reduced in recent years,belonging to sulfuric acid type,and the most serious acid rain pollution appeared in autumn and winter. The pH value of rainfall went up with the improvement of rainfall grade,and the increase of rainfall quantity had diluting effect on the rainfall acidity. High altitude meteorological conditions affected acid rain obviously,when the upper wind velocity was below 7 m/s,the frequency of acid rain was higher and its pH value was lower,with serious acid rain pollution,and it showed that upper wind had diluting effect on the horizontal transport of pollutants. The frequency of acid rain became higher with stronger inversion intensity. Moreover,the surrounding industrial areas had obvious effect on the formation of acid rain. Unstable meteorological conditions were beneficial to the horizontal and vertical diffusion of pollution in the lower atmosphere,reducing the effect of induced-acidity pollutants on a region.Based on the rainfall monitoring data and high altitude meteorological data,the present situation of acid rain pollution in Nanchang City was analyzed and the forming factors of acid rain were revealed. The results showed that acid rain in Nanchang had the characteristics of high acidity and frequency,and the pH value of rainfall reduced in recent years,belonging to sulfuric acid type,and the most serious acid rain pollution appeared in autumn and winter. The pH value of rainfall went up with the improvement of rainfall grade,and the increase of rainfall quantity had diluting effect on the rainfall acidity. High altitude meteorological conditions affected acid rain obviously,when the upper wind velocity was below 7 m/s,the frequency of acid rain was higher and its pH value was lower,with serious acid rain pollution,and it showed that upper wind had diluting effect on the horizontal transport of pollutants. The frequency of acid rain became higher with stronger inversion intensity. Moreover,the surrounding industrial areas had obvious effect on the formation of acid rain. Unstable meteorological conditions were beneficial to the horizontal and vertical diffusion of pollution in the lower atmosphere,reducing the effect of induced-acidity pollutants on a region.

关 键 词：Nanchang Acid rain Weather condition pH value of rainfall China 

分 类 号：X517[环境科学与工程—环境工程] P42[天文地球—大气科学及气象学]