欧亚大陆晴天大气电场变化特征统计分析  

Analysis of fair-weather atmospheric electric field over Eurasian Continent

作　　者：张祎[1] 张卫斌[1] 王振会[2,3] 李浩[1] 

机构地区：[1]浙江省防雷中心,浙江杭州310008 [2]南京信息工程大学气象灾害预报预警与评估协同创新中心,江苏南京210044 [3]南京信息工程大学大气物理学院,江苏南京210044

出　　处：《大气科学学报》2015年第5期703-709,共7页Transactions of Atmospheric Sciences

基　　金：公益性行业(气象)科研专项(GYHY200806014)

摘　　要：对欧亚大陆中纬度陆地9个晴天大气电场观测站点的观测数据进行了分析。结果表明:欧亚大陆中纬度陆地9个站点晴天大气电场强度的日变化主要成单峰单谷和双峰双谷两种波形。各站点的晴天大气电场强度季节变化也较为明显:冬季晴天大气电场强度值较大,夏季晴天大气电场强度值较小。晴天大气电场强度值的日变化总体上与大气电导率呈负相关,与爱根核浓度、绝对湿度呈正相关,并且温度梯度也对其有一定的影响。Fair-weather atmospheric electric field data observed at nine stations over mid-latitude areas of Eurasian Continent are analyzed. The results show that the diurnal variation of fair-weather atmospheric electric field exhibits in two ways： a single oscillation with a peak and trough and a double oscillation with two peaks and two troughs. The seasonal variation is obvious,which is higher in winter and lower in summer. Diurnal variation of fair-weather atmospheric electric field is negatively correlated with the air conductivity and positively correlated with both the Aitken nuclei concentration and the absolute humidity and it is also affected by temperature gradient.

关 键 词：晴天 大气电场 统计 

分 类 号：P427.31[天文地球—大气科学及气象学]