气候变化领域集成服务门户(CCPortal): Analysis of convective instability data derived from a ground-based microwave radiometer before triggering operations for artificial lightning

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DOI	10.1016/j.atmosres.2020.105005
	Analysis of convective instability data derived from a ground-based microwave radiometer before triggering operations for artificial lightning
	Pan Y.; Zhang S.; Li Q.; Ma L.; Jiang S.; Lei L.; Lyu W.; Wang Z.
发表日期	2020
ISSN	0169-8095
卷号	243
英文摘要	Artificially triggered lightning is useful in scientific studies of the physical processes of lightning because it is predictable in both time and space. However, the triggering operations need to be carried out under suitable weather conditions. Ground-based microwave radiometers can be used to obtain thermodynamic information about the Earth's atmosphere and can show the evolution of atmospheric instability at a high temporal resolution. They could therefore be used to find a suitable time to trigger artificial lightning. Data were collected with an MWP967KV ground-based microwave radiometer installed at the Field Experiment Base on Lightning Science of the China Meteorological Administration from May 21 to July 31, 2018, and June 1 to July 10, 2019, and the convective available potential energy (CAPE) and convective inhibition (CIN) were calculated for use in the analysis of convective instability. Comparison of the datasets for 11 non-precipitation days and 11 triggering operation days showed that on non-precipitation days both the CAPE and CIN increase from about 6:00 am and then gradually decrease after reaching a maximum value. By contrast, both the CAPE and CIN experienced a cliff-like decrease on the triggering operation days just before the start of the operation to trigger the artificial discharge of lightning. The decreasing trends shown by the CAPE were similar to the trends for CIN. It was common for the CAPE to decrease from >1000 J/kg before triggering to <300 J/kg, while the CIN decreased from <300 J/kg to about 0 J/kg. The rates of decrease of the CAPE and CIN were 22.96 and 4.38 J/kg/min, respectively. The values of CIN before the triggering operations were usually lower than those on non-precipitation days. © 2020 Elsevier B.V.
关键词	Earth atmosphere Microwave devices Microwave measurement Potential energy Radiometers Artificial lightnings Artificially triggered lightning Convective available potential energies Convective inhibition Convective instabilities High temporal resolution Microwave radiometers Thermodynamic information Lightning atmospheric electricity convective system experimental study ground-based measurement lightning microwave radiometer potential energy thermodynamics trigger mechanism
语种	英语
来源机构	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132429
推荐引用方式 GB/T 7714	Pan Y.,Zhang S.,Li Q.,et al. Analysis of convective instability data derived from a ground-based microwave radiometer before triggering operations for artificial lightning[J]. Atmospheric Research,2020,243.
APA	Pan Y..,Zhang S..,Li Q..,Ma L..,Jiang S..,...&Wang Z..(2020).Analysis of convective instability data derived from a ground-based microwave radiometer before triggering operations for artificial lightning.,243.
MLA	Pan Y.,et al."Analysis of convective instability data derived from a ground-based microwave radiometer before triggering operations for artificial lightning".243(2020).