Trends of thermodynamic indices thresholds over two tropical stations of north-east India during pre-monsoon thunderstorms

被引：20
|
作者：
Sahu, Rajesh Kumar [1 ]
Dadich, Jiteshwar [1 ]
Tyagi, Bhishma [1 ]
Vissa, Naresh Krishna [1 ]
机构：
[1] Natl Inst Technol Rourkela, Dept Earth & Atmospher Sci, Rourkela 769008, Odisha, India
来源：
JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS | 2020年 / 211卷
关键词：
Thunderstorm; Thermodynamic indices; Skill score analysis; Global warming; Climate change; STABILITY INDEXES; FORECAST; SKILL; HEAT; CLIMATOLOGY; MOMENTUM; FLUXES; STORM;
D O I：
10.1016/j.jastp.2020.105472
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
Thermodynamic indices have been used as a tool for nowcasting thunderstorms for decades. The present study deals with understanding the variations in threshold values of various thermodynamic indices during pre -monsoon season at two north-eastern Indian stations: Agartala and Guwahati. The study utilises thirty years (1987-2016) of radiosonde data, surface information about thunderstorms, and TRMM daily rainfall data. The threshold values for five years period interval each has been determined for fourteen thermodynamic indices to the whole period. The indices related to latent, potential and convective instability responded differently at both the sites.
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页数：8
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