نتایج جستجو برای: ماهواره ی trmm

تعداد نتایج: 108137  

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 ...

2013
Semire Folasade Abiola Rosmiwati Mohd-Mokhtar Widad Ismail Norizah Mohamad J. S. Mandeep

This paperwork describes a comprehensive statistical assessment of rain gauge and satellitebased monthly and annual rainfall measurements over Nigeria during the period of 2001 to 2010. Two statistical methods were empolyed for inter-comparison and validation of the Tropical Rainfall Measuring Mission TRMM 3B43 V7 rainfall product. TRMM was selected because of the recently developed algorithms ...

Journal: :Remote Sensing 2018
Guanghua Wei Haishen Lü Wade T. Crow Yonghua Zhu Jianqun Wang Jianbin Su

A critical evaluation of the newly released precipitation data set is very important for both the end users and data developers. Meanwhile, the evaluation may provide a benchmark for the product’s continued development and future improvement. To these ends, the four precipitation estimates including IMERG (the Integrated Multi-satellitE Retrievals for the Global Precipitation Measurement) V04A,...

2016
Ansoumana Bodian Alain Dezetter Abdoulaye Deme Lamine Diop

The availability of climatic data, especially on a daily time step, has become very rare in West Africa over the last few years due to the high costs of climate data monitoring. This scarcity of climatic data is a huge obstacle to conduct hydrological studies over some watersheds. In this context, our study aimed to evaluate the capacity of Tropical Rainfall Measuring Mission (TRMM) satellite d...

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...

2014
Paulo Tarso S. Oliveira Mark A. Nearing M. Susan Moran David C. Goodrich Edson Wendland Hoshin V. Gupta

We assess the water balance of the Brazilian Cerrado based on remotely sensed estimates of precipitation (TRMM), evapotranspiration (MOD16), and terrestrial water storage (GRACE) for the period from 2003 to 2010. Uncertainties for each remotely sensed data set were computed, the budget closure was evaluated using measured discharge data for the three largest river basins in the Cerrado, and the...

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...

2013
YIXIN WEN QING CAO PIERRE-EMMANUEL KIRSTETTER YANG HONG JONATHAN J. GOURLEY JIAN ZHANG GUIFU ZHANG BIN YONG

This study proposes an approach that identifies and corrects for the vertical profile of reflectivity (VPR) by using Tropical Rainfall MeasuringMission (TRMM) precipitation radar (PR) measurements in the region of Arizona and southern California, where the ground-based Next Generation Weather Radar (NEXRAD) finds difficulties in making reliable estimations of surface precipitation amounts becau...

Journal: :Remote Sensing 2013
Elena Tarnavsky Mark Mulligan Mohamed Ouessar Abdoulaye Faye Emily Black

This paper introduces and evaluates DryMOD, a dynamic water balance model of the key hydrological process in drylands that is based on free, public-domain datasets. The rainfall model of DryMOD makes optimal use of spatially disaggregated Tropical Rainfall Measuring Mission (TRMM) datasets to simulate hourly rainfall intensities at a spatial resolution of 1-km. Regional-scale applications of th...

Journal: :Remote Sensing 2018
Lang Xia Fen Zhao Kebiao Mao Zijin Yuan Zhiyuan Zuo Tongren Xu

This study analyzes the changes in drought patterns in China’s major crop-growing areas over the past 60 years. The analysis was done using both weather station data and Tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI) rainfall data to calculate the Standardized Precipitation Index (SPI). The results showed that the occurrences of extreme drought were the most serious in recent...

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