نتایج جستجو برای: rain modeling

تعداد نتایج: 406076  

Journal: :جغرافیا و توسعه ناحیه ای 0
زاهدی زاهدی ساری صراف ساری صراف جامعی جامعی

rain modeling in recent years has been of great importance in water resource management and its function in long term and short term planning, especially its great effect on agricultural economy. to reach to good results box-jenkins model is much more efficient. the writers of this article have used the data collected in tabriz and oroumiyeh stations in a fifty year period and then presented th...

2006
Oliver Mußhoff Martin Odening

Today, soil erosion is considered as one of main subjects of watershed management at national and global levels. Assessment of decreasing risk of soil and it spatial distribution are one of key factors for successful evaluation of soil erosion. The objectives of research were calculation and modeling of rain erosivity factor in Ilam province using data of number of 28 pluviometry stations durin...

2013
M. Arias - Hidalgo B. Bhattacharya A. E. Mynett A. van Griensven

At present, new technologies are becoming available to extend the coverage of conventional meteorological datasets. An example is the TMPA-3B42R dataset (research – v6). The usefulness of this satellite rainfall product has been investigated in the hydrological modeling of the Vinces River catchment (Ecuadorian lowlands). The initial TMPA3B42R information exhibited some features of the precipit...

2009
Birgit Müller Martin Quaas Karin Frank Stefan Baumgärtner

Rain-index insurance is strongly advocated in many parts of the developing world to help farmers to cope with climatic risk that prevail in (semi-)arid rangelands due to low and highly uncertain rainfall. We present a modeling analysis of how the availability of rain-index insurance affects the sustainability of rangeland management. We show that a rain-index insurance with frequent payoffs, i....

Journal: :IEEE Journal on Selected Areas in Communications 1999
Jennifer Pinder Louis J. Ippolito Stephen Horan Julie Feil

The Advanced Communications Technology Satellite (ACTS) propagation experiment has collected four years of propagation data at 20.185 and 27.505 GHz. The objective of the experiment is to develop long-term statistics and modeling techniques for predicting atmospheric propagation effects in the Ka band. The experiment includes seven identical earth stations at different locations in North Americ...

2005
Yang Hong Kuo-lin Hsu Soroosh Sorooshian Xiaogang Gao

[1] Accurate measurement of rainfall distribution at various spatial and temporal scales is crucial for hydrological modeling and water resources management. In the literature of satellite rainfall estimation, many efforts have been made to calibrate a statistical relationship (including threshold, linear, or nonlinear) between cloud infrared (IR) brightness temperatures and surface rain rates ...

ژورنال: علوم آب و خاک 2014

In this study, the influence of spatial heterogeneity of rainfall on flood hydrograph prediction in three mountainous catchments in south west of Iran was studied. Two interpolation techniques including Thiessen polygons method and Inverse Distance Weighting method were applied to compare the rainfall patterns of surrounding rain-gages in hydrograph simulation with rainfall patterns of nearest ...

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