2012年-2016年乐亭酸雨变化特征及影响因素分析研究  

Characteristics of Acid Rain and Its Influencing Factors from 2012 to 2016 in Laoting,Hebei Province

作　　者：司方坤 高桂芹[2] 曹晓霞[2] 张洁新 文翔 张红军 

机构地区：[1]乐亭县气象局,河北唐山063600 [2]唐山市气象局,河北唐山063000

出　　处：《环境科学与管理》2017年第12期90-94,共5页Environmental Science and Management

基　　金：河北省气象科研项目(15ZC08)资助

摘　　要：利用2012年-2016年乐亭国家基本气象站气象观测资料,分析了乐亭酸雨变化特征和降水量、风向、风速等气象因素对酸雨的影响。结果表明:年平均降水pH值和年酸雨频率呈下降趋势、平均K值呈上升趋势;秋季酸雨程度在四季中最严重,平均pH值为4.50,酸雨频率为38.4%;月平均pH值和酸雨频率呈现波动;酸雨平均pH值随降水量的增加而下降,酸雨频率随降水量的增加不断上升;月平均风速越大,月平均pH值越大,酸雨频率越小;酸雨发生时地面主导风向为NE、ENE、E,与上游地区燃煤型钢铁企业有一定关系。Based on the meteorological observation data of Leting national basic meteorological station for the variation characteristics of acid rain in Leting and the influence of meteorological factors such as precipitation, wind directionand wind speed on acid rain were analyzed. The results showed that the average annual precipitatioof acid rain decreased, the average K value increased ; autumn was the most serious acid rain in the four seasons, the average pHvalueis4.50,the frequency of acid rain for 38. 4% months; the averagepH value and the frequency of acid rain fluctuated ; theaverage pH value of acid rain decreased with the increase of the precipitation and increased the tation increasing ; monthly average wind speed increases,the mean monthly pH value is greater,the smaller the frequency of acid rain ; acid rain occurred when the dominant wind direction is NE,ground ENE,E , have a certain relationship with the iron and steel enterprises in the upstream area of coal.

关 键 词：酸雨 PH值 K值 酸雨频率 影响因素 

分 类 号：X517[环境科学与工程—环境工程]