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| Titel |
The validation service of the hydrological SAF geostationary and polar satellite precipitation products |
| VerfasserIn |
S. Puca, F. Porcú, A. Rinollo, G. Vulpiani, P. Baguis, S. Balabanova, E. Campione, A. Ertürk, S. Gabellani, R. Iwanski, M. Jurašek, J. Kaňák, J. Kerényi, G. Koshinchanov, G. Kozinarova, P. Krahe, B. Lapeta, E. Lábó, L. Milani, L'. Okon, A. Öztopal, P. Pagliara, F. Pignone, C. Rachimow, N. Rebora, E. Roulin, I. Sönmez, A. Toniazzo, D. Biron, D. Casella, E. Cattani, S. Dietrich, F. Di Paola, S. Laviola, V. Levizzani, D. Melfi, A. Mugnai, G. Panegrossi, M. Petracca, P. Sanò, F. Zauli, P. Rosci, L. De Leonibus, E. Agosta, F. Gattari |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Sciences ; 14, no. 4 ; Nr. 14, no. 4 (2014-04-14), S.871-889 |
| Datensatznummer |
250118392
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| Publikation (Nr.) |
 copernicus.org/nhess-14-871-2014.pdf |
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| Zusammenfassung |
The development phase (DP) of the EUMETSAT Satellite Application Facility for
Support to Operational Hydrology and Water Management (H-SAF)
led to the design and implementation of several precipitation
products, after 5 yr (2005–2010) of activity. Presently, five precipitation
estimation algorithms based on data from passive microwave and infrared
sensors, on board geostationary and sun-synchronous platforms, function in
operational mode at the H-SAF hosting institute to provide near real-time
precipitation products at different spatial and temporal resolutions.
In order to evaluate the precipitation product accuracy, a validation
activity has been established since the beginning of the project. A
Precipitation Product Validation Group (PPVG) works in parallel with the
development of the estimation algorithms with two aims: to provide the
algorithm developers with indications to refine algorithms and products, and
to evaluate the error structure to be associated with the operational
products.
In this paper, the framework of the PPVG is presented: (a) the
characteristics of the ground reference data available to H-SAF (i.e. radar
and rain gauge networks), (b) the agreed upon validation strategy settled
among the eight European countries participating in the PPVG, and (c) the
steps of the validation procedures. The quality of the reference data is
discussed, and the efforts for its improvement are outlined, with special
emphasis on the definition of a ground radar quality map and on the
implementation of a suitable rain gauge interpolation algorithm. The work
done during the H-SAF development phase has led the PPVG to converge into a
common validation procedure among the members, taking advantage of the
experience acquired by each one of them in the validation of H-SAF products.
The methodology is presented here, indicating the main steps of the
validation procedure (ground data quality control, spatial interpolation,
up-scaling of radar data vs. satellite grid, statistical score evaluation,
case study analysis).
Finally, an overview of the results is presented, focusing on the monthly
statistical indicators, referred to the satellite product performances over
different seasons and areas. |
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