北戴河降水pH值与大气环境的关系研究  

Relationship between pH Value of Rainfall and Atmospheric Environment in Beidaihe

作　　者：张宝贵 杜建双 李卫敏 包玉龙 孙丽华 Zhang Baogui;Du Jianshuang;Li Weimin;Bao Yulong;Sun Lihua(Qinhuangdao Meteorological Bureau, Qinhuangdao 066000, China;Beidaihe National Meteorological Observatory, Qinhuangdao 066100, China)

机构地区：[1]秦皇岛市气象局,河北秦皇岛066000 [2]北戴河气象观测站,河北秦皇岛066100

出　　处：《环境科学与管理》2020年第10期49-53,共5页Environmental Science and Management

基　　金：国家重点研发计划项目,气候多尺度变化与年代际重大事件的归因与预估(2016YFA0600400,2016-2021)。

摘　　要：基于气象观测和大气环境监测数据,分析北戴河降水pH值与大气环境的关系,结果显示雷雨可使降水的pH值增大并且与持续时间成正比;地面风速对降水pH值影响明显,小风风速使降水偏离pH=7中性点,地面风速增大使降水pH值靠近中性点,地面风速超过4.5 m/s,降水更接近于中性;大气各层风的方向越一致,越容易出现较强的酸性或碱性降水,相反则容易出现靠近pH=7的降水;降水pH值与主要污染物、气象要素有显著相关性,显著性检验表明SO2和相对湿度与降水pH值相关性最好。Based on the data of the meteorological observation and the atmospheric environment monitoring,the relationship between pH value of rainfall and the atmospheric environment was analyzed in Beidaihe.The results show that the rainfall with the lightning can increase pH value of rainfall,and it's proportional to the duration of the rainfall.The surface wind speed has obvious influence on pH value of rainfall,If there is the breeze(its speed is less than 2 m/s),pH value of rainfall can deviate from the neutral point(pH=7).If the surface wind speed increases,pH value of the rainfall move towards the neutral point.When the wind speed of the surface exceed 4.5 m/s,pH value of rainfall will be very close to neutral,.The more consistent direction of the wind in the three layers of atmosphere,the more acidic or more alkaline rainfall will occur,on the contrary,pH value of rainfall will tends to near pH=7.pH value of rainfall have significant correlation with the main pollutants and the meteorological elements,by significance test,SO2 and relative humidity have the best correlations with pH value of rainfall among all factors.

关 键 词：降水PH值 大气环境 碱性降水 关系 

分 类 号：X51[环境科学与工程—环境工程]