太原地区大气电场及其与大气污染物关系  

Characteristics of Atmospheric Electric Field in Taiyuan and Its Relationship with Atmospheric Pollutants

作　　者：张华明[1] 张义军[2] 杨世刚[1] 赵桂香[3] 李芬[4] 李强[1] 

机构地区：[1]山西省雷电防护监测中心,山西太原030002 [2]中国气象科学研究院雷电物理和防护工程实验室,北京100081 [3]山西省气象台,山西太原030006 [4]山西省气象影视中心,山西太原030002

出　　处：《环境科学与技术》2013年第9期66-69,95,共5页Environmental Science & Technology

基　　金：国家自然科学基金(41005004);山西省气象局项目资助(SXKYBLD20092017);国家"973"计划项目(2012CB955903);中国气象局气象软科学项目(CMAGR2013M10)

摘　　要：利用2008-2011年大气电场仪的观测资料,对太原地区大气电场特征进行了分析,结果表明:太原地区晴天大气电场日变化呈双峰双谷波形,大气电场峰值出现在09:00和21:00左右,平均值为0.912 kV/m,同其它地区相比明显较大,人类活动通过气溶胶使得市中心的大气电场早峰值提前,晚峰值推迟;大气电场的季节变化与太原地区的气候特征有密切关系,冬季晴天大气电场日变化伴随着年变化,夏季大气电场日变化受全球性普遍日变化机制影响较强。讨论了大气电场与大气污染物之间的相互关系,发现二氧化硫氧化生成硫酸盐成为大气中重粒子,从而影响大气电场的强度,太原地区二氧化硫浓度较高导致了大气电场强度比其它地区高;分子极性较强的二氧化硫与大气电场互相影响,因而与大气电场的相关性较高。Based on observation data of atmospheric electric field instrument from 2008 to 2011, characteristics of atmospheric electric field in Talyuan were analyzed. Results indicated that the diurnal variation of electric field in fair weather exhibited a double oscillation, the peak occurred at 9：00 and 21：00, and annual average atmospheric electric field was 0.912 kV/m, larger than other regions. Human activities affect the peak and valley times of the atmospheric electric field, which advance early peak and postpone evening peak. The seasonal variation was closely related to climatic characteristics in Taiyuan. Diurnal variation in winter varied by annual change, and global mechanism strong affected summer diurnal variation of the atmospheric electric field. Relationships between atmospheric electric field and air pollutants were discussed, and it was found that the sulfate heavy particles from sulfur dioxide oxidation affected the strength of atmospheric electric field. Higher concentrations of sulfur dioxide in Taiyuan led to higher atmospheric electric field strength. The polar molecular sulfur dioxide and atmospheric electric field which affect each other has a higher correlation with atmospheric electric field.

关 键 词：大气电场 气溶胶 二氧化硫 PM10 

分 类 号：X16[环境科学与工程—环境科学]