Variation of fair weather atmospheric electricity in Jinghong Observatory, China

Based on the fair weather atmospheric electric field recorded by Jinghong observatory (100° 47´ E, 22° 00´ N, 582 m a.s.l.), its meteorological effects and time variations are studied over the period from October 2006 to September 2009, are presented in this work. It has been found the diurnal and monthly of atmospheric electric evolution in fair weather showed variation in Jinghong. The daily variation curves show single oscillation with evening peak. The minima can also be seen in early morning. The analysis in this paper is to look into how the factors like atmospheric pressure, temperature and relative humidity in the presence of the meteorological factors in four seasons govern the fair weather atmospheric electric field at the site of measurement. The results of meteorological effects show that there is a strong positive correlation between the fair weather atmospheric electric field and temperature, while a strong negative correlation is seen between the fair weather atmospheric electric field and the atmospheric pressure, also the relative humidity.