Geographical planning of space quarterly journal

Geographical planning of space quarterly journal

Application of Instability Indicators in Thunderstorm Monitoring in Kerman Province

Document Type : Research Paper

Authors
Mehdi Asadi 1
hassan hajmoahmadi 2
mokhtar karami 3
1 Department of Geography Education, Farhangian University, Tehran, Iran
2 Department of Geography, Tarbiat Modares University of Tehran, Tehran, Iran
3 Department of Climatology, Hakim Sabzevari university, Sabzevar, Iran
10.30488/gps.2021.143529.2855
Abstract
To study the mechanisms that cause thunderstorms in Kerman province, we used daily data from 10 synoptic stations in the area. The thunderstorm event codes were extracted from stations as the current weather conditions (WW) every three hours to reach the goals. In the following, a single day as a representative was examined and analyzed to study the nature of the atmospheric structure. In the selected period, hail is due to the formation of a low-pressure chalk layer (500 hPa), low-pressure, and instability at the surface. Investigating the atmospheric patterns showed that the cause of this phenomenon in the study area is the strengthening and expansion of low-pressure systems in the East of the Red Sea and Saudi Arabia. These low-pressure systems have gained moisture through the southern seas (Persian Gulf and Oman Sea), causing instability and precipitation along their path. Also, cold air loss from the middle atmospheric layers causes unstable currents and hail. After examining atmospheric conditions through unstable indicators, we tried to track the storm and its formation in 24 hours. Results showed that the CAPE Index and the Total Index are effective tools for monitoring and forecasting thunderstorms in the area. on the other hand, the sweat index also helps expand and route unstable systems
Keywords
Air Instability
Thunderstorm
Hail
Sweet Weather
Kerman Province
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Geographical planning of space quarterly journal
Volume 14, Issue 2
Summer 2024
Pages 47-60