نتایج جستجو برای: 2003materials and methodsto modeling thunderstorm rainfall
تعداد نتایج: 16894247 فیلتر نتایج به سال:
To study the effect of climatic factors on Taverniera glabra species distribution in Iran rangelands, climatic variables were selected and factors affecting species distribution were evaluated using factor analysis. Then a spatial distribution map was prepared for all these factors throughout Iran. Factor analysis showed that 9 factors included: temperature, relative humidity, winter precipitat...
Soil moisture is a key variable in dryland ecosystems since it determines the occurrence and duration of vegetation water stress and affects the development of weather patterns including rainfall. However, the lack of ground observations of soil moisture and rainfall dynamics in many drylands has long been a major obstacle in understanding ecohydrological processes in these ecosystems. It is al...
This chapter also focusesaddresses on precipitation intensity measurements (in particular rate of rainfall or rainfall intensity) due to their rapidly increased need for the interpretation of rainfall patterns, rainfall event modeling and forecasts, everyday meteorological and engineering applications, the investigation of evolving events at the local to regional scale with potential tremendous...
Natural hazards such as extreme wind, rainfall and ocean waves can have severe impacts on built natural environments, contributing to the occurrence of disastrous events in some cases. These are often caused by weather systems cyclones, fronts thunderstorms. Previous studies typically examine one type hazard and/or system, with recent years starting focus compound hazards. Here we systematicall...
Thunderstorm is a destructive atmospheric phenomenon, which annually causes a lot of damage to various parts of human activities. Due to the accompaniment of thunderstorm with rainstorm and hail and its effective role in creating sudden floods, the analysis of the behavior of this hazard has been widely studied both in terms of agriculture and in terms of financial and life damages throughout t...
Abstract The Terrestrial Gamma‐ray Flash (TGF) to lightning ratio, computed over the three tropical chimneys, presents a paradox: African thunderstorms produce most but yield lowest fraction of TGFs when compared American and Southeast Asian thunderstorms. To understand physical insights into this asymmetry, Tropical Rainfall Measuring Mission Precipitation Radar measurements are used depict ve...
INTRODUCTION Three-dimensional radar reflectivity data and the algorithms used to help meteorologists interpret these data are extremely important in nowcasting. However, a number of inherent problems arise when tracking thunderstorm cells with 3-dimensional reflectivity. These problems include (1) identifying cells in a complex multi-cellular thunderstorm environment, (2) detecting thunderstor...
This paper presents a study developed at SIMEPAR (Paraná state weather service) using lightning data for electrical thunderstorm nowcasting. Thunderstorm electrical data collected at SIMEPAR such as lightning location, time of occurrence, current intensity, polarity, etc, are stored in real-time in a relational database. As a first step of this study, Microsoft Business Intelligence bundled wit...
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