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Title: Diurnal variation of the fair-weather atmospheric electric field in Binchuan, China

Journal Article · · Journal of Atmospheric and Solar-Terrestrial Physics
ORCiD logo [1]; ORCiD logo [2];  [3];  [2];  [2];  [3];  [3]
  1. Chinese Academy of Sciences (CAS), Beijing (China); University of Chinese Academy of Sciences, Beijing (China); National Space Science Center, Beijing (China)
  2. Chinese Academy of Sciences (CAS), Beijing (China); National Space Science Center, Beijing (China)
  3. Chinese Academy of Sciences (CAS), Beijing (China); National Space Science Center, CAS, Beijing (China)

With the purpose of understanding the variation of fair-weather atmospheric electric field, the vertical component of atmospheric electric field (recorded as Ez) has been measured in the town Binchuan (25°50'N, 100°34'E, 1438.7 m asl) of Dali city, Yunnan, China from June 14, 2017 to December 1, 2020. Automatic measured visual range is used as a proxy of aerosol concentration. The mean diurnal variation curve of the fair-weather Ez in Binchuan, having two peaks occurred at around 9LT and 20LT, shows little correlation with the well-known Carnegie Curve and other two high-latitude sites' Curves. While strong negative correlation between fair-weather Ez and visual range is found, indicating the variation of fair-weather is dominated by aerosol concentration. The main source of aerosol concentration variation probably sunrise and sunset effect. We support our findings by comparing Ez, visual range with sunrise and sunset times. The peaks (troughs) of Ez (visual range) are proved to have weak correlations with anthropogenic pollution through comparing the Ez, visual range under workdays and holidays.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Atmospheric Radiation Measurement (ARM) Data Center
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); Chinese Academy of Sciences; National Natural Science Foundation of China (NSFC)
Grant/Contract Number:
AC05-76RL01830; WX145XQ07-06; XDA17010301; XDA15052500; XDA15350201; 41874175; 41931073
OSTI ID:
1906788
Journal Information:
Journal of Atmospheric and Solar-Terrestrial Physics, Vol. 242; ISSN 1364-6826
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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