@Article{NegriMachFrei:2015:AnCoRe,
author = "Negri, Renato Galante and Machado, Luiz Augusto Toledo and
Freitas, Saulo Ribeiro de",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "An{\'a}lise da convec{\c{c}}{\~a}o resolvida explicitamente
pelo modelo brams a partir da compara{\c{c}}{\~a}o com
radi{\^a}ncias de sat{\'e}lites",
journal = "Revista Brasileira de Meteorologia",
year = "2015",
volume = "30",
number = "3",
pages = "327--339",
month = "Sept.",
keywords = "Cloud scale model, Evaluation, Meteorological satellites.",
abstract = "Este trabalho apresenta a an{\'a}lise da convec{\c{c}}{\~a}o
resolvida explicitamente pelo modelo BRAMS, referentes ao projeto
CHUVA, a partir da compara{\c{c}}{\~a}o com a
convec{\c{c}}{\~a}o real presente nas imagens de sat{\'e}lites.
Radi{\^a}ncias em diferentes canais do infravermelho e
micro-ondas, medidas pelos sensores GOES-imager e SSMI-S, foram
simuladas pelo modelo de transfer{\^e}ncia radiativa RTTOV e
comparadas {\`a}s respectivas radi{\^a}ncias medidas pelos
sensores reais. Para tais simula{\c{c}}{\~o}es, os perfis
atmosf{\'e}ricos provenientes do BRAMS foram utilizados como
vetor estado da atmosfera. Devido {\`a} natureza ca{\'o}tica da
atmosfera, principalmente na escala de nuvens, {\'e}
invi{\'a}vel realizar a compara{\c{c}}{\~a}o entre as
radi{\^a}ncias simuladas e as medidas reais considerando a mesma
posi{\c{c}}{\~a}o geogr{\'a}fica. Portanto, as
compara{\c{c}}{\~o}es foram feitas verificando se o modelo
reproduz os aspectos gerais da convec{\c{c}}{\~a}o resolvida
pelo modelo, independente da posi{\c{c}}{\~a}o geogr{\'a}fica
das nuvens. O projeto CHUVA realizou experimentos de campo em sete
s{\'{\i}}tios com diferentes padr{\~o}es clim{\'a}ticos,
visando estudar os regimes de precipita{\c{c}}{\~a}o presentes
no Brasil. A metodologia de an{\'a}lise apresentada foca apenas
nas simula{\c{c}}{\~o}es referentes ao experimento Vale do
Para{\'{\i}}ba. Os resultados indicam que tal m{\'e}todo de
an{\'a}lise {\'e} vi{\'a}vel para a an{\'a}lise das
simula{\c{c}}{\~o}es dos demais experimentos de campo do
projeto. ABSTRACT: This work shows the analysis of the convection
explicitly resolved by BRAMS model, done as part of the CHUVA
project, where the resolved clouds and the ones present on real
satellite images were compared. Radiances at infrared and
microwave channels of GOES-Imager and SSMI-S were simulated using
the radiative transfe rmodel RTTOV and then compared to its
respective real images. The atmospheric profiles simulated by
BRAMS were used as state vector to RTTOV. This comparison verified
if the BRAMS was capable to reproduce the general behavior of the
convection, despite erros in the geographic placement of
individual clouds. For CHUVA project, seven field experiments over
different locations of Brazil, dominated by distinct climate
patterns, were done to study the various preciptation regimes over
the country. The metodology presented here was applied only on the
Vale do Paraiba experiment and the results shows that this
metodology can be applied to the other field experiments of the
CHUVA project.",
doi = "10.1590/0102-778620140024",
url = "http://dx.doi.org/10.1590/0102-778620140024",
issn = "0102-7786",
language = "pt",
targetfile = "2015_negri.pdf",
urlaccessdate = "15 jun. 2024"
}