Evaluation of high-resolution satellite precipitation products over very complex terrain in Ethiopia

This study focuses on the evaluation of 3-hourly, 0.25° × .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.

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Author Hirpa, F.
Gebremichael, M.
Hopson, Thomas M.
Publisher UCAR/NCAR - Library
Publication Date 2010-05-01T00:00:00
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Topic Category geoscientificInformation
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Metadata Date 2025-07-17T15:26:17.415990
Metadata Record Identifier edu.ucar.opensky::articles:17260
Metadata Language eng; USA
Suggested Citation Hirpa, F., Gebremichael, M., Hopson, Thomas M.. (2010). Evaluation of high-resolution satellite precipitation products over very complex terrain in Ethiopia. UCAR/NCAR - Library. https://n2t.org/ark:/85065/d7g73g0t. Accessed 30 July 2025.

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