نتایج جستجو برای: indicating that trmm

تعداد نتایج: 6462526  

بارش یکی از پارامتر­های مهم اقلیمی موثر در مدل­های هیدرولوژیکی است. لذا برآورد صحیح مقدار و توزیع مکانی آن در یک حوزه آبخیز از اهمیت زیادی برخوردار است. در سال های اخیر به دلیل تعداد و تراکم محدود ایستگاه­های بارانسنجی در سطح کشور و نبود ایستگاه در مناطق کوهستانی و  صعب العبور، استفاده از داده های ماهواره ای بارش به عنوان ابزاری موثر در پیش بینی توزیع مکانی منطقه ای بارش مورد توجه محققین قرار گ...

2011
RYAN KNOX JINGFENG WANG RAFAEL BRAS

Prior research has shown that deforestation in the southwestern Amazon enhances the formation of nonprecipitating shallow cumulus clouds, while deep cumulus convection was favored over forested land. The research presented here further investigates the trends of hydrometeors in the area by examining how precipitation frequency changes as a function of distance to the forest’s edge. Measurements...

2008
Owen A. Kelley Erich F. Stocker Owen Kelley

A prototype has been developed that enables Google Earth to access the ~13 terabyte precipitation archive of the Tropical Rainfall Measuring Mission (TRMM). While other organizations distribute TRMM satellite data for display in Google Earth, this prototype is the first application that allows Google Earth to examine single-orbit files at full resolution in 3D. This archive access tool is inten...

2009
ROBINSON I. NEGRÓN JUÁREZ WENHONG LI RONG FU KATIA FERNANDES OLIVEIRA CARDOSO

Six rainfall datasets are compared over the Amazon basin, Northeast Brazil, and the Congo basin. These datasets include three gauge-only precipitation products from the Climate Prediction Center (CPC), Global Precipitation Climatology Center (GPCC), and Brazilian Weather Forecast and Climate Studies Center (CLMNLS), and three combined gauge and satellite precipitation datasets from the CPC Merg...

2003
Martin Yapur

Over the period of January 10 to the 18 2003, a student research team obtained snowfall measurements and weather data at Storm Peak Laboratory (SPL) in the vicinity of Steamboat Springs Colorado. These measurements were obtained in sequential collections of every three hours around the clock. The team registered four snowfall events with different water-equivalent precipitation amounts. Three-h...

2009
STEVEN C. CHAN SUMANT NIGAM

Diabatic heating is diagnosed from the 40-yr ECMWF Re-Analysis (ERA-40) circulation as a residue in the thermodynamic equation. The heating distribution is compared with the heating structure diagnosed from NCEP and 15-yr ECMWF Re-Analysis (ERA-15) circulation and latent heating generated from Tropical Rainfall Measuring Mission (TRMM) observations using the convective–stratiform heating (CSH) ...

2013
YOUCUN QI JIAN ZHANG QING CAO YANG HONG XIAO-MING HU

Mesoscale convective systems (MCSs) contain both regions of convective and stratiform precipitation, and a bright band (BB) is often found in the stratiform region. Inflated reflectivity intensities in the BB often cause positive biases in radar quantitative precipitation estimation (QPE). A vertical profile of reflectivity (VPR) correction is necessary to reduce such biases. However, existing ...

Journal: :Journal of Applied Economic Sciences 2022

Unemployment status is considered one of the divisive economic issues. This paper aims to examine factors such as age, gender, geographical area, educational level, college major and work experience that affect unemployment in Lebanon. As well predicting majors reduce Using survey method collect data. This study found individuals with higher levels are set have chances be employed. Ano...

2005
Rajesh Kumar A. K. Mittal R. M. Gairola Samir Pokhrel Vijay K. Agarwal

Artificial Neural Network (ANN) technique has been used for the estimation of precipitation, mainly from passive and active microwave measurements from space. ANN has been used to estimate precipitation using TRMM Microwave Imager (TMI) onboard Tropical Rainfall Measuring Mission (TRMM) satellite. A precipitation algorithm designed to generate rainfall estimates using a combination of TMI and T...

2007
SHINTA SETO TOSHIO IGUCHI

In this study, the authors used Tropical Rainfall Measuring Mission precipitation radar (TRMM PR) data to investigate changes in the actual (attenuation corrected) surface backscattering cross section ( e) due to changes in surface conditions induced by rainfall, the effects of changes in e on the path integrated attenuation (PIA) estimates by surface reference techniques (SRTs), and the effect...

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