%0 Journal Article
%4 dpi.inpe.br/plutao/2012/11.28.14.52
%2 dpi.inpe.br/plutao/2012/11.28.14.52.11
%@doi 10.5194/amtd-5-1717-2012
%@issn 1867-8610
%F lattes: 5379515759830546 8 SchneebeliSBACMBM:2012:FiReCH
%T Observations of tropical rain with a polarimetric X-band radar: first results from the CHUVA campaign
%D 2012
%A Schneebeli, M.,
%A Sakuragi, Jojhy,
%A Biscaro, Thiago Souza,
%A Angelis, C. F.,
%A Carvalho da Costa, I.,
%A Morales, C.,
%A Baldini, L.,
%A Machado, Luiz Augusto Toledo,
%@affiliation Ecole Polytechnique F´ed´ erale de Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering (ENAC), Lausanne, Switzerland
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation
%@affiliation
%@affiliation Instituto de Astronomia, Geofisica e Ciências Atmosféricas, Universidade de São Paulo, São Paulo, Brazil
%@affiliation nstituto di Scienze dell’Atmosfera e del Clima (CNR), Rome, Italy
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@electronicmailaddress
%@electronicmailaddress jojhy.sakuragi@cptec.inpe.br
%@electronicmailaddress tsbiscaro@gmail.com
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress machado@cptec.inpe.br
%B Atmospheric Measurement Techniques Discussions
%V 5
%N 1
%P 1717-1761
%K Polarimetric radar, Atenuation, Tropical rain.
%X A polarimetric X-band radar has been deployed during one month (April 2011) for a field campaign in Fortaleza, Brazil, together with additional sensors like a Ka-band vertically pointing frequency modulated continuous wave (FMCW) radar and three laser disdrometers. The disdrometers as well as the FMCW radar are capable of measuring 5 the rain drop size distributions (DSDs), hence making it possible to forward-model theoretical polarimetric X-band radar observables at the point where the instruments are located. This set-up allows to thoroughly test the accuracy of the X-band radar measurements as well as the algorithms that are used to correct the radar data for radome and rain attenuation. In the first campaign in Fortaleza it was found that radome atten- 10 uation dominantly affects the measurements. With an algorithm that is based on the self-consistency of the polarimetric observables, the radome induced reflectivity offset was estimated. Offset corrected measurements were then further corrected for rain attenuation with two different schemes. The performance of the post-processing steps is being analyzed by comparing the data with disdrometer-inferred polarimetric variables 15 that were measured in a distance of 20 km to the radar.
%@language en
%3 amtd-5-1717-2012.pdf
%O Setores de Atividade: Pesquisa e desenvolvimento científico.