@MastersThesis{Lourenço:2017:AnSeMo,
author = "Louren{\c{c}}o, Romman Arantes",
title = "An{\'a}lise da sensibilidade do modelo WRF a diferentes perfis de
resolu{\c{c}}{\~a}o vertical",
school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
year = "2017",
address = "S{\~a}o Jos{\'e} dos Campos",
month = "2017-08-28",
keywords = "perfil vertical, CLP, sistemas atmosf{\'e}ricos, WRF, vertical
profile, PBL, atmospheric systems, WRF.",
abstract = "A regi{\~a}o Sul do Brasil {\'e} impactada por eventos
meteorol{\'o}gicos severos devido {\`a} influ{\^e}ncia de
diferentes sistemas atmosf{\'e}ricos. A Previs{\~a}o
Num{\'e}rica do Tempo (PNT) busca otimizar a previs{\~a}o desses
sistemas. Nesse sentido, o presente trabalho teve como objetivo
analisar diferentes distribui{\c{c}}{\~o}es dos n{\'{\i}}veis
verticais da atmosfera no modelo WRF (Weather Research and
Forcasting) no intuito de se determinar qual melhor representa a
regi{\~a}o em estudo. Foi utilizado o sistema de
assimila{\c{c}}{\~a}o de dados (WRFDA-3DVAR), com
assimila{\c{c}}{\~a}o de dados convencionais e dados de radar.
Foram feitas simula{\c{c}}{\~o}es com maior
resolu{\c{c}}{\~a}o vertical na Camada Limite Planet{\'a}ria
(CLP) e elevando a fronteira superior do modelo. Os casos
escolhidos foram os dias 30 de outubro, 07 de novembro e 13 de
dezembro de 2014, em virtude dos sistemas atmosf{\'e}ricos
presentes nessas datas e da disponibilidade de dados
observacionais em superf{\'{\i}}cie e altitude e dos dados de
radar. As sa{\'{\i}}das do WRF foram comparadas com dados
meteorol{\'o}gicos reais obtidos das radiosondagens existentes na
regi{\~a}o em estudo. Tamb{\'e}m foram analisados os campos de
precipita{\c{c}}{\~a}o simulados pelo modelo, utilizando os
produtos estat{\'{\i}}sticos Fractional Skill Score (FSS) e
Local Root Mean Square Error (LRMSE). As rodadas do WRF realizadas
com maior defini{\c{c}}{\~a}o em baixos n{\'{\i}}veis
apresentaram resultados satisfat{\'o}rios tanto na
simula{\c{c}}{\~a}o do perfil atmosf{\'e}rico, quanto na
previs{\~a}o no posicionamento dos campos de
precipita{\c{c}}{\~a}o. A assimila{\c{c}}{\~a}o de dados de
radar mostrou uma melhoria na previs{\~a}o da
localiza{\c{c}}{\~a}o dos n{\'u}cleos de
precipita{\c{c}}{\~a}o intensa. ABSTRACT: The southern region of
Brazil is impacted by severe weather events due to the influence
of different atmospheric systems. Numerical Weather Prediction
(NWP) seeks to optimize the prediction of these systems. In this
sense, the present study had as objective of analyzing different
distributions of the vertical levels of the atmosphere in the WRF
model (Weather Research and Forecasting) in order to determine
what better represents the region under study. The data
assimilation system (WRFDA-3DVAR) was used, with assimilation of
conventional data and radar data. Simulations with higher vertical
resolution were made in the Planetary Boundary Layer (PBL) and
increasing the upper boundary of the model. The selected cases
were October 30, November 7 and December 13, 2014, because the
atmospheric systems present on those dates and the availability of
observational surface and altitude data and radar data. The
outputs of the WRF were compared with real meteorological data
obtained from atmospheric sounding in the study region. Were also
analyzed the precipitation fields simulated by the model, using
the statistical products Fractional Skill Score (FSS) and Local
Root Mean Square Error (LRMSE). The outputs of the WRF performed
with higher definition at low levels presented satisfactory
results both in the simulation of the atmospheric profile and in
the prediction in the positioning of precipitation fields. The
assimilation of radar data showed an improvement in the prediction
of the location of the nuclei of intense precipitation.",
committee = "Arav{\'e}quia, Jos{\'e} Antonio (presidente) and Herdies, Dirceu
Luis (orientador) and Corr{\^e}a, Cleber Souza",
englishtitle = "Analysis of the sensitivity of the wrf model to different vertical
resolution profiles.",
language = "pt",
pages = "155",
ibi = "8JMKD3MGP3W34P/3PBSKP5",
url = "http://urlib.net/ibi/8JMKD3MGP3W34P/3PBSKP5",
targetfile = "publicacao.pdf",
urlaccessdate = "30 abr. 2024"
}