A new approach to simulating the impact of turbulence on electric processes in mesoscale numerical weather prediction models

被引：0
|
作者：
Dementyeva, Svetlana O. [1 ]
Ilin, Nikolai, V [1 ]
Kulikov, Mikhail Yu [1 ]
Mareev, Evgeny A. [1 ]
机构：
[1] RAS, Inst Appl Phys, 46 Ulyanov Str, Nizhnii Novgorod 603950, Russia
来源：
27TH INTERNATIONAL SYMPOSIUM ON ATMOSPHERIC AND OCEAN OPTICS, ATMOSPHERIC PHYSICS | 2021年 / 11916卷
基金：
俄罗斯基础研究基金会;
关键词：
thunderstorm; turbulence; electric potential; electric field; thunderstorm electrification; numerical weather prediction model; THUNDERSTORM;
D O I：
10.1117/12.2603393
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
A new approach for taking into account the impact of turbulence on thunderstorm electrification using the numerical model WRF-ARW is presented. For this, a method for calculating the turbulent energy dissipation rate on the basis of the radar reflectivity distribution and characteristic values of the turbulent energy dissipation rate in various types of clouds is developed. The charging current is corrected by the value of the turbulent current component determined for the obtained turbulent energy dissipation rate. Thus, calculation of the electric parameters (electric potential and electric field) of thunderclouds is carried out taking into account the influence of turbulent mixing on thunderstorm electrification.
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页数：5
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