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contributor authorSorooshian, Soroosh
contributor authorHsu, Kuo-Lin
contributor authorGao, Xiaogang
contributor authorGupta, Hoshin V.
contributor authorImam, Bisher
contributor authorBraithwaite, Dan
date accessioned2017-06-09T14:42:46Z
date available2017-06-09T14:42:46Z
date copyright2000/09/01
date issued2000
identifier issn0003-0007
identifier otherams-25004.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4161740
description abstractPERSIANN, an automated system for Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks, has been developed for the estimation of rainfall from geosynchronous satellite longwave infared imagery (GOES?IR) at a resolution of 0.25° ? 0.25° every half?hour. The accuracy of the rainfall product is improved by adaptively adjusting the network parameters using the instantaneous rain?rate estimates from the Tropical Rainfall Measurement Mission (TRMM) microwave imager (TMI product 2A12), and the random errors are further reduced by accumulation to a resolution of 1° ? 1° daily. The authors' current GOES?IR?TRMM TMI based product, named PERSIANN?GT, was evaluated over the region 30°S?30°N, 90°E?30°W, which includes the tropical Pacific Ocean and parts of Asia, Australia, and the Americas. The resulting rain?rate estimates agree well with the National Climatic Data Center radar?gauge composite data over Florida and Texas (correlation coefficient r > 0.7). The product also compares well (r ~ 0.77?0.90) with the monthly World Meteorological Organization gauge measurements for 5° ? 5° grid locations having high gauge densities. The PERSIANN?GT product was evaluated further by comparing it with current TRMM products (3A11, 3B31, 3B42, 3B43) over the entire study region. The estimates compare well with the TRMM 3B43 1° ? 1° monthly product, but the PERSIANN?GT products indicate higher rainfall over the western Pacific Ocean when compared to the adjusted geosynchronous precipitation index?based TRMM 3B42 product.
publisherAmerican Meteorological Society
titleEvaluation of PERSIANN System Satellite–Based Estimates of Tropical Rainfall
typeJournal Paper
journal volume81
journal issue9
journal titleBulletin of the American Meteorological Society
identifier doi10.1175/1520-0477(2000)081<2035:EOPSSE>2.3.CO;2
journal fristpage2035
journal lastpage2046
treeBulletin of the American Meteorological Society:;2000:;volume( 081 ):;issue: 009
contenttypeFulltext


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