http://www.cnr.it/ontology/cnr/individuo/prodotto/ID276880
Modelling X-band SAR observations of precipitating clouds over land and sea using C-band-dual polarization weather radar (Abstract/Comunicazione in atti di convegno)
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- Label
- Modelling X-band SAR observations of precipitating clouds over land and sea using C-band-dual polarization weather radar (Abstract/Comunicazione in atti di convegno) (literal)
- Anno
- 2013-01-01T00:00:00+01:00 (literal)
- Alternative label
Luca Baldini (1), N. Roberto(1), R. Cremonini(2,4),R.Bechini(2,5), L. Facheris(3), V. Chandrasekar (5,6) (2013)
Modelling X-band SAR observations of precipitating clouds over land and sea using C-band-dual polarization weather radar
in ursi commission f microwave signature 2013, Espoo, Finland, 28-31 October 2013
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Luca Baldini (1), N. Roberto(1), R. Cremonini(2,4),R.Bechini(2,5), L. Facheris(3), V. Chandrasekar (5,6) (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
- ursi commission f microwave signature 2013 - Specialist symposium on Microwave Remote Sensing of the Earth, Oceans, and Atmosphere (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#volumeInCollana
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- Google Scholar (literal)
- Abstract (literal)
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- (1) CNR - Istituto di Scienze dell'Atmosfera e del Clima, Roma, Italy, l. baldini@isac.cnr.it
(2) ARPA Piemonte, Torino, Italy,
(3) Università di Firenze, Italy
(4) Dept. of Physics, University of Helsinki, Finland,
(5) Colorado State University, Fort Collins, CO,
(6) Finnish Meteorological Institute, Helsinki, Finland (literal)
- Titolo
- Modelling X-band SAR observations of precipitating clouds over land and sea using C-band-dual polarization weather radar (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#curatoriVolume
- Jaan Parks, Martti Hallikanen, Juha Kainulainen, Matti Vaaja, Jaakko Seppanen (literal)
- Abstract
- Data collected by weather radars, typically at S, C and X-band frequencies, and in particular
those with dual-polarization capabilities are frequently used to investigate observations of
precipitation events collected by satellite borne instruments, such as real or synthetic aperture
radars operating at different frequencies. Satellite borne SAR aims at providing surface
characteristics for different applications in \"all weather\" conditions. However, precipitation
affects SAR images depending on the employed wavelength, and results in attenuation of
surface backscattering, additional backscattering from sampled precipitation, geometric and
radiometric distortion. At the 9.6 GHz frequency (X band) of the Italian Space Agency Cosmo
Sky Med (CSK®) constellation (and by other SARs currently in orbit), attenuation induced by
intense precipitation can be significant, masking features of the observed surface. Over land,
attenuation prevails over increased backscattering due to precipitation sampled by radar beam,
often negligible with respect to terrain backscattering, also influenced by the terrain wetting.
Coincident dual polarization radar measurements allow to estimate X band specific attenuations
at the frequency and incidence angle of SAR [1][2]. A classification of hydrometeors obtained
from weather radar polarimetric signature of precipitation can be used to select the proper
algorithms for specific attenuation [3]. Over the sea precipitation induces also changes in the sea
NRCS that can be treated by resorting to rainfall fields retrieved by weater radar and a proper
modelling [4][5]. Precipitation cases collected in 2 years by the CSK satellites over terrain and
sea are analyzed through a model applied to simultaneous observations collected by C-band (literal)
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