نتایج جستجو برای: estimation precipitation

تعداد نتایج: 319902  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم زمین 1387

چکیده ندارد.

Journal: :آب و خاک 0
طوفانی نژاد طوفانی نژاد کمالی کمالی علیزاده علیزاده

abstract obtaining reliable precipitation observations is important for hydrological simulations and weather forecasting. radar data can provide insight in the spatial variation of precipitation and can also detect large areas of rain and estimate rainfall rates. weather radar systems nearly always operate in s-, c- or x-band. since x-band systems require smaller antennas than those at c- or s-...

2007
YANG HONG DAVID GOCHIS JIANG-TAO CHENG KUO-LIN HSU SOROOSH SOROOSHIAN

Robust validation of the space–time structure of remotely sensed precipitation estimates is critical to improving their quality and confident application in water cycle–related research. In this work, the performance of the Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks-Cloud Classification System (PERSIANN-CCS) precipitation product is evaluated agai...

2001
HONGPING LIU V. CHANDRASEKAR GANG XU

Recent research has shown that neural network techniques can be used successfully for ground rainfall estimation from radar measurements. The neural network is a nonparametric method for representing the relationship between radar measurements and rainfall rate. The relationship is derived directly from a dataset consisting of radar measurements and rain gauge measurements. The effectiveness of...

Journal: :Journal of Japan Society of Hydrology and Water Resources 2017

Journal: :Bulletin of the American Meteorological Society 2014

Journal: :Journal of Applied Meteorology and Climatology 2010

Journal: :Remote Sensing 2016
Jingjing Li Kuolin Hsu Amir Aghakouchak Soroosh Sorooshian

An object-based verification approach is employed to assess the performance of the commonly used high-resolution satellite precipitation products: Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks (PERSIANN), Climate Prediction center MORPHing technique (CMORPH), and Tropical Rainfall Measurement Mission (TRMM) Multi-Satellite Precipitation Analysis (TMP...

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