نتایج جستجو برای: thunderstorm

تعداد نتایج: 1141  

2009
Sumam Mary Idicula C. Naveen Francis

Severe thunderstorms frequently occur over the eastern and north-eastern states of India during the pre-monsoon season (March-May). Forecasting thunderstorm is one of the most difficult tasks in weather prediction, due to their rather small spatial and temporal extension and the inherent non-linearity of their dynamics and physics. In this paper, experiments are conducted on artificial neural n...

2014
Xin Yang Zhanqing Li

This study analyzes 15 years of Tropical Rainfall Measuring Mission (TRMM) satellite data, together with surface observations of thunderstorms and visibility, to study trends and relationships between aerosols and thunderstorms in southeast China. TRMM data used are from the lightning imaging sensor (LIS) and the precipitation radar (PR). Surface data are human-observed thunderstormoccurrence a...

باغبانان, پرستو, فرج زاده اصل, منوچهر, قویدل رحیمی, یوسف,

Thunderstorm is one of the most severe atmospheric disturbances in the world and also in Iran, which is characterized by rapid upward movements, abundant moisture, and climatic instability. Since this phenomenon is usually accompanied with hail, lightning, heavy rain, flood and severe winds, it can cause irreparable damage to the environment. Investigation of spring thunderstorms has a great si...

Journal: :Scientific reports 2016
Andrew J Dowdy

Thunderstorms are convective systems characterised by the occurrence of lightning. Lightning and thunderstorm activity has been increasingly studied in recent years in relation to the El Niño/Southern Oscillation (ENSO) and various other large-scale modes of atmospheric and oceanic variability. Large-scale modes of variability can sometimes be predictable several months in advance, suggesting p...

Journal: :Proceedings of the Wisconsin Space Conference 2016

2010
T. Rigo

Monitoring thunderstorms activity is an essential part of operational weather surveillance given their potential hazards, including lightning, hail, heavy rainfall, strong winds or even tornadoes. This study has two main objectives: firstly, the description of a methodology, based on radar and total lightning data to characterise thunderstorms in real-time; secondly, the application of this met...

Journal: :فیزیک زمین و فضا 0
سحر تاج بخش سازمان هواشناسی کشور- دکتری پروین غفاریان دانشگاه آزاد اسلامی ، واحد علوم و تحقیقات- دانشجوی دکتری ابراهیم میرزایی سازمان هواشناسی کشور- کارشناس ارشد

thunderstorm is one of the most dangerous phenomena in aviation because the greatest number weather hazards such as icing, turbulence, wind shear, lightning hail are combined in one single source, the thunderstorm. spatial characteristics of thunderstorms which can be associated with irreparable outcomes are known by most of the forecasters. tornadoes, microbursts, very strong winds and flash f...

1962
STANLEY A. CHANGNON

Hail and thunderstorm statistics for the 1951-60 period obtained from 119 U.S. Weather Bureau stations in Illinois were conlbined n-ith crop-hail insurance data for this same period for performing a detailed climatological investigation of the frequencies of hail days and thunderstorm days in Illinois. In the crop-growing season thunderstorms occur on 1 out of every 2 days on the average and ha...

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