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Media type:
E-Article
Title:
Evaluation of High-Resolution Satellite Precipitation Products over Very Complex Terrain in Ethiopia
Contributor:
Hirpa, Feyera A.;
Gebremichael, Mekonnen;
Hopson, Thomas
Published:
American Meteorological Society, 2010
Published in:
Journal of Applied Meteorology and Climatology, 49 (2010) 5, Seite 1044-1051
Language:
English
DOI:
10.1175/2009jamc2298.1
ISSN:
1558-8432;
1558-8424
Origination:
Footnote:
Description:
Abstract This study focuses on the evaluation of 3-hourly, 0.25° × 0.25°, satellite-based precipitation products: the Tropical Rainfall Measuring Mission (TRMM) Multisatellite Precipitation Analysis (TMPA) 3B42RT, the NOAA/Climate Prediction Center morphing technique (CMORPH), and Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks (PERSIANN). CMORPH is primarily microwave based, 3B42RT is primarily microwave based when microwave data are available and infrared based when microwave data are not available, and PERSIANN is primarily infrared based. The results show that 1) 3B42RT and CMORPH give similar rainfall fields (in terms of bias, spatial structure, elevation-dependent trend, and distribution function), which are different from PERSIANN rainfall fields; 2) PERSIANN does not show the elevation-dependent trend observed in rain gauge values, 3B42RT, and CMORPH; and 3) PERSIANN considerably underestimates rainfall in high-elevation areas.