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| Titel |
CDRD and PNPR satellite passive microwave precipitation retrieval algorithms: EuroTRMM/EURAINSAT origins and H-SAF operations |
| VerfasserIn |
A. Mugnai, E. A. Smith, G. J. Tripoli, B. Bizzarri, D. Casella, S. Dietrich, F. Paola, G. Panegrossi, P. Sanò |
| 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 Science ; 13, no. 4 ; Nr. 13, no. 4 (2013-04-10), S.887-912 |
| Datensatznummer |
250018404
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| Publikation (Nr.) |
 copernicus.org/nhess-13-887-2013.pdf |
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| Zusammenfassung |
| Satellite Application Facility on Support to Operational Hydrology and Water
Management (H-SAF) is a EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites) program, designed to deliver satellite
products of hydrological interest (precipitation, soil moisture and snow
parameters) over the European and Mediterranean region to research and
operations users worldwide. Six satellite precipitation algorithms and
concomitant precipitation products are the responsibility of various
agencies in Italy. Two of these algorithms have been designed for maximum
accuracy by restricting their inputs to measurements from conical and
cross-track scanning passive microwave (PMW) radiometers mounted on various
low Earth orbiting satellites. They have been developed at the Italian
National Research Council/Institute of Atmospheric Sciences and Climate in
Rome (CNR/ISAC-Rome), and are providing operational retrievals of surface
rain rate and its phase properties. Each of these algorithms is physically
based, however, the first of these, referred to as the Cloud Dynamics and
Radiation Database (CDRD) algorithm, uses a Bayesian-based solution solver,
while the second, referred to as the PMW Neural-net Precipitation Retrieval
(PNPR) algorithm, uses a neural network-based solution solver. Herein we
first provide an overview of the two initial EU research and applications
programs that motivated their initial development, EuroTRMM and EURAINSAT (European Satellite Rainfall Analysis and Monitoring at the Geostationary Scale),
and the current H-SAF program that provides the framework for their
operational use and continued development. We stress the relevance of the
CDRD and PNPR algorithms and their precipitation products in helping secure
the goals of H-SAF's scientific and operations agenda, the former helpful as
a secondary calibration reference to other algorithms in H-SAF's complete
mix of algorithms. Descriptions of the algorithms' designs are provided
including a few examples of their performance. This aspect of the
development of the two algorithms is placed in the context of what we refer
to as the TRMM era, which is the era denoting the active and ongoing period
of the Tropical Rainfall Measuring Mission (TRMM) that helped inspire their
original development. In 2015, the ISAC-Rome precipitation algorithms will
undergo a transformation beginning with the upcoming Global Precipitation
Measurement (GPM) mission, particularly the GPM Core Satellite technologies.
A few years afterward, the first pair of imaging and sounding Meteosat Third
Generation (MTG) satellites will be launched, providing additional
technological advances. Various of the opportunities presented by the GPM
Core and MTG satellites for improving the current CDRD and PNPR
precipitation retrieval algorithms, as well as extending their product
capability, are discussed. |
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