نتایج جستجو برای: 2003).materials and methodsto modeling thunderstorm rainfall

تعداد نتایج: 16894247  

Journal: :پژوهش های جغرافیای طبیعی 0
علی اکبر رسولی استاد گروه جغرافیای طبیعی دانشگاه تبریز سحر نصیری قلعه بین دانشجوی دکتری اقلیم شناسی سینوپتیک، دانشگاه محقق اردبیلی خلیل ولیزاده کامران استادیار گروه جغرافیای طبیعی دانشگاه تبریز

extended abstractthunderstorm rainfall is one of the most important climatic phenomena in the northwest of iran that has specific variability in spatial distribution. these rains have an important role in case study area climates. the purpose of this study is investigation of spatial distribution of thunderstorm rainfall of mountainous areas of the northwest of iran to modeling thunderstorm in ...

2009
H. B. Osborn

A simplified stochastic model based on airmass thunderstorm rainfall data from the 58-square-mile Walnut Gulch Experimental Watershed in south eastern Arizona is being developed at the Southwest Watershed Research Center, Tucson, Ariz. Records from the 95 rain gage network on this watershed pro vide valuable information on airmass thunderstorm rainfall in the Southwestern United States. Proba b...

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...

2005
DANIELA JARUŠKOVÁ

(1) Snow melt period of December to April in combination with precipitation (typical of lowland and hilly parts of the Labe, Vltava and Morava catchments). (2) Longer duration of rainfall lasting 10 to 72 hours (rainfall intensified and prolonged by elevation enhancement). (3) Intensive short duration of summer rainfall exceeding (flood peak occurring within hours of rainfall peak, small areas ...

بداق جمالی, جواد, جوان مرد , سهیلا,

  In this research parameterization of the precipitation process in Ogura ;amp Takahashi (O-T) thunderstorm model was improved in microphysical processes, specially in the autoconversion process to form raindrops, in the glaciation process and in the terminal velocities of rain and hail. The rainfall intensity became much heavier with Kesslers parameterization, the second peak of the rainfall i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده مهندسی علوم آب 1393

drought is transient phenomenon , slow , repetitive and integral part of the climate of each region. drought begins with a substantial reduction in precipitation over the long-term average rainfall and over time, reduced soil moisture and surface and ground water resources will continue to decrease. this phenomenon is the most important in bakhtegan basin because of its importance in strategic ...

2013
Xin Yang Zhanyu Yao Zhanqing Li Tianyi Fan

Time series of rainfall, thunderstorms, temperatures, winds and aerosols of 50 years have been analyzed at the Xian valley (1951–2005, rain rates data are only available for the period of 1961–2000 for Xian) and the nearby Mount Hua (1951–2005) in central China, for assessing the impact of the increasing air pollution on convective precipitation. Adding aerosols to pristine air initially increa...

Journal: :Climate Dynamics 2021

Abstract Most of the rainfall in southern Australia is associated with cyclones, cold fronts, and thunderstorms, cases when these weather systems co-occur are particularly likely to cause extreme rainfall. Rainfall declines some parts during cool half year recent decades have previously been attributed decreases from fronts and/or while thunderstorm-related has observed increase, warm year. How...

2013
O. Pinto

This paper describes a comparative analysis of the thunderstorm incidence in southeastern Brazil obtained from thunderstorm days observed at two different epochs (from 1910 to 1951 and from 1971 to 1984) and from lightning data provided by the Brazilian lightning location system RINDAT (from 1999 to 2006) and the Lightning Imaging Sensor (LIS) on board the Tropical Rainfall Measuring Mission (T...

2010
M. Rajeevan A. Kesarkar S. B. Thampi T. N. Rao B. Radhakrishna

In the present study, we have used the Weather Research and Forecasting (WRF) model to simulate the features associated with a severe thunderstorm observed over Gadanki (13.5 N, 79.2 E), over southeast India, on 21 May 2008 and examined its sensitivity to four different microphysical (MP) schemes (Thompson, Lin, WSM6 and Morrison). We have used the WRF model with three nested domains with the i...

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