The spectra and temperature of cloud lightning discharge channel  

作　　者：WANG Jie YUAN Ping GUO FengXia QIE XiuShu OUYANG YuHua ZHANG YiJun 

机构地区：[1]College of Physics and Electronic Engineering,Northwest Normal University,Lanzhou 730070,China [2]Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,China [3]Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China [4]Chinese Academy of Meteorological Sciences,Beijing 100081,China

出　　处：《Science China Earth Sciences》2009年第7期907-912,共6页中国科学（地球科学英文版）

基　　金：Supported by National Nature Science Foundation of China (Grant No. 40475007) ;Foundation of Northwest Normal University (Grant No. NWNU-KJCXGC- 03-21)

摘　　要：Spectra of seven cloud lightning discharges are reported for the first time after captured with a Slit-less Spectrograph on Chinese Tibet Plateau. The structural characters are analyzed and compared with the spectra of cloud-to-ground lightning, and the results indicate that the spectra of cloud lightning show two different kinds of structure characteristics. One has the similar structure as those of cloud-to-ground lightning discharge, and the other is absolutely different. Meanwhile, more lines of OII with high excited energy are recorded in the spectra of cloud lightning discharge in comparison with that of cloud-to-ground lighting happening in the same region. Temperatures at different positions are calculated and temperature characteristics of these two sorts are analyzed, based to the wavelength, relative intensities and other transition parameters. We suggest that the physical process in the cloud discharge channels changes with much more rapid velocity and wider range compared to cloud-to-ground lightning. The differences between the two types of cloud discharge also reflect some discrepancies between the discharge characteristics.Spectra of seven cloud lightning discharges are reported for the first time after captured with a Slit-less Spectrograph on Chinese Tibet Plateau. The structural characters are analyzed and compared with the spectra of cloud-to-ground lightning, and the results indicate that the spectra of cloud lightning show two different kinds of structure characteristics. One has the similar structure as those of cloud-toground lightning discharge, and the other is absolutely different. Meanwhile, more lines of OII with high excited energy are recorded in the spectra of cloud lightning discharge in comparison with that of cloud-to-ground lighting happening in the same region. Temperatures at different positions are calculated and temperature characteristics of these two sorts are analyzed, based to the wavelength, relative intensities and other transition parameters. We suggest that the physical process in the cloud discharge channels changes with much more rapid velocity and wider range compared to cloud-to-ground lightning. The differences between the two types of cloud discharge also reflect some discrepancies between the discharge characteristics.

关 键 词：SPECTRA CLOUD LIGHTNING DISCHARGE temperature 

分 类 号：P427.32[天文地球—大气科学及气象学]