نتایج جستجو برای: rainfall and temperature

تعداد نتایج: 16903927  

M. Mohseni Saravi V. Gholami, Z. Darvari

Artificial neural networks (ANNs) have become one of the most promising tools for rainfall simulation since a few years ago. However, most of the researchers have focused on rainfall intensity records as well as on watersheds, which generally are utilized as input records of other hydro-meteorological variables. The present study was conducted in Kechik station, Golestan Province (northern Iran...

Journal: :فیزیک زمین و فضا 0
j masoompour samakosh climatology, department of geography, faculty of humanities, razi university, kermanshah, iran m soltani climatology, department of physical geography, faculty of geography, university of tehran, iran a hanafi climatology, university of isfahan, iran gh azizi climatology, department of physical geography, faculty of geography, university of tehran, iran e mirzaei institute of geophysics, university of tehran, iran a ranjbar saadatabadi atmospheric sciences and meteorological research center (asmerc) of i. r. of iran meteorological organization (irimo), tehran, iran y yousefi

heavy precipitation plays a significant role in arid and semi-arid regions of iran. in order to understand the effect of blocking high system on rainfalls in northwest iran during 25 - 28 october 2008, meteorological conditions including pressure, wind fields and temperature at multiple levels of the atmosphere were analyzed. sea level pressure, the 1000-500 hpa thickness, perceptible water, re...

2007
Jian-Jian Wang Robert F. Adler Guojun Gu

In this study, nine-years (1998-2006) of monthly precipitation data from Tropical Rainfall Measuring Mission (TRMM) are used to examine the relations between tropical rainfall and surface temperature. A technique is developed to adjust the PR monthly rainfall data in the Tropics (whole ocean and whole land) to account for the effect of the TRMM orbit boost from 350 km to 402 km in August 2001. ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه مواد و انرژی - پژوهشکده سرامیک 1392

thermal barrier coatings (tbcs) are used to provide thermal insulation to the hot section components of gas turbines in order to enhance the operating temperature and turbine efficiency. hot corrosion and thermal shocks are the main destructive factors in tbcs which comes as a result of oxygen and molten salt diffusion into the coating. in this thesis atmospheric plasma spraying was used to dep...

West Africa is vulnerable to the effects of climate change. This paper analyzed the impacts of climate change on economic growth in Anglophone West Africa with similar background, during the periods 1969-2016. Five growth model equations have been developed to incorporate climate change variables into the model. Panel data estimations such as the fixed effect model, random effect model and Haus...

Journal: :محیط زیست طبیعی 0
هستی پطروسیان کارشناس ارشد محیط زیست، گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران سهراب اشرفی استادیار گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران افشین دانه کار دانشیار گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران جهانگیر فقهی دانشیار گروه جنگلداری و اقتصاد جنگل، دانشکده منابع طبیعی، دانشگاه تهران

in recent years, mangrove forests with the high economical and environmental value are threatened with extinction by human activities. ex-situ conservation is an appropriate method to conservation this forest. this study was conducted with the purpose of studying the role of climatology factors as one of the most important environmental parameters in dispersion of mangrove forests of hormozgan ...

Journal: :مرتع و آبخیزداری 0
مسلم برجی حسن گاویار کارشناس ارشد آبخیزداری، دانشکده منابع طبیعی، دانشگاه تهران، ایران هادی اسکندری دامنه دانشجوی دکتری بیابان زدایی، دانشکده منابع طبیعی، دانشگاه هرمزگان، ایران. حسن خسروی استادیار دانشکده منابع طبیعی، دانشگاه تهران، ایران

nowadays, temperature increase, rainfall decrease and its effect on the time dynamics of carbon fixation cycle still are faced by many uncertainties. net primary production (npp) is one of the main factors of carbon cycle; precipitation and temperature measurement are known as two useful tools to study different ecosystems stability and resilience in terms of climate. hence, in this study, npp ...

2016
Tianhua He Haylee D’Agui Sim Lin Lim Neal J. Enright Yiqi Luo

Substantial climate changes are evident across Australia, with declining rainfall and rising temperature in conjunction with frequent fires. Considerable species loss and range contractions have been predicted; however, our understanding of how genetic variation may promote adaptation in response to climate change remains uncertain. Here we characterized candidate genes associated with rainfall...

2010
Md. Iqbal Sunil D. PAWAR

The relationship of lightning with rainfall and temperature is investigated on the basis of a four-year (2004– 2007) data set over the Pune region. It is found that the annual variations of stroke count and rainfall both are bimodal with the first peak value of rainfall showing a one month time lag from the first peak value of stroke count. This is attributed to the prime period of the onset ph...

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