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| Titel |
Water vapour distribution at urban scale using high-resolution numerical weather model and spaceborne SAR interferometric data |
| VerfasserIn |
E. Pichelli, R. Ferretti, D. Cimini, D. Perissin, M. Montopoli, F. S. Marzano, N. Pierdicca |
| 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 ; 10, no. 1 ; Nr. 10, no. 1 (2010-01-22), S.121-132 |
| Datensatznummer |
250007882
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| Publikation (Nr.) |
 copernicus.org/nhess-10-121-2010.pdf |
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| Zusammenfassung |
| The local distribution of water vapour in the urban area of Rome has been
studied using both a high resolution mesoscale model (MM5) and Earth Remote
Sensing-1 (ERS-1) satellite radar data. Interferometric Synthetic Aperture
Radar (InSAR) techniques, after the removal of all other geometric effects,
estimate excess path length variation between two different SAR acquisitions
(Atmospheric Phase Screen: APS). APS are strictly related to the variations
of the water vapour content along the radar line of sight. To the aim of
assessing the MM5 ability to reproduce the gross features of the Integrated
Water Vapour (IWV) spatial distribution, as a first step ECMWF IWV has been
used as benchmark against which the high resolution MM5 model and InSAR APS
maps have been compared. As a following step, the high resolution IWV MM5
maps have been compared with both InSAR and surface meteorological data. The
results show that the high resolution IWV model maps compare well with the
InSAR ones. Support to this finding is obtained by semivariogram analysis
that clearly shows good agreement beside from a model bias. |
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