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| Titel |
Local-level ground valuation of rainfall estimates by GPM IMERG Final run using the WegenerNet high-resolution precipitation data |
| VerfasserIn |
Sungmin Oh, Ulrich Foelsche, Jürgen Fuchsberger, Gottfried Kirchengast |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250139187
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| Publikation (Nr.) |
 EGU/EGU2017-2372.pdf |
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| Zusammenfassung |
| We first performed a study on evaluation of Integrated Multi-Satellite Retrievals for Global
Precipitation Measurement (IMERG) Early, Late, and Final rainfall estimates. Afterwards we
proceeded to use the WegenerNet gridded precipitation data for detailed analysis of the
performance of IMERG Final run data. In this current work, IMERG Final run estimates
during the period from April to October for 3 years (2014-2016) are assessed with focus
put on various parameters affecting the satellite rainfall retrieval techniques, for
example, IR/PMW sensor data involved and seasonal rainfall variations or spatial
variability. The WegenerNet gridded data (on a 200 m x 200 m grid, updated every
5-min) are generated from 1km-scale gauge measurements of its 151 weather stations
through an Inverse Distance Weighted interpolation method. Given that the network is
located within an area of about 15 km × 20 km (centered at 46.93 ˚ N/15.90 ˚ E in
south-eastern Austria), two 0.1˚ x 0.1˚ IMERG grid cells can be selected for a direct
pixel-to-pixel validation of IMERG data. This presentation will summarize the first study
evaluating the three different IMERG runs with updated IMERG data (v4) and then
show the results from the current study focusing on the IMERG Final run data. |
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