@MastersThesis{Figueiredo:2020:InReVe,
author = "Figueiredo, Jo{\~a}o Batista Araujo",
title = "Influ{\^e}ncia da resolu{\c{c}}{\~a}o vertical e
parametriza{\c{c}}{\~o}es de convec{\c{c}}{\~a}o no desempenho
do modelo Global Eta Framework (GEF)",
school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
year = "2020",
address = "S{\~a}o Jos{\'e} dos Campos",
month = "2020-02-13",
keywords = "GEF, Eta, resolu{\c{c}}{\~a}o vertical,
parametriza{\c{c}}{\~a}o convectiva, Kain-Fritsch,
Betts-Miller-Janjic, vertical resolution, convective
parameterization.",
abstract = "Este trabalho tem por objetivo estudar a influ{\^e}ncia da
resolu{\c{c}}{\~a}o vertical e dos esquemas de
parametriza{\c{c}}{\~a}o de convec{\c{c}}{\~a}o no desempenho
do modelo Global Eta Framework (GEF). O trabalho busca representar
melhor a estratosfera no modelo e consequentemente, melhorar as
previs{\~o}es. Foram avaliadas as parametriza{\c{c}}{\~o}es
convectivas de Betts-Miller-Janjic (BMJ) e Kain-Fritsch (KF). O
modelo foi configurado na resolu{\c{c}}{\~a}o horizontal de 25
km, resolu{\c{c}}{\~o}es verticais de 50 e 70 n{\'{\i}}veis, e
topo em 1 hPa. O modelo foi integrado diariamente para o m{\^e}s
de janeiro de 2018, utilizando as condi{\c{c}}{\~o}es iniciais
do modelo Global Forecast System (GFS) das 00Z. O prazo de
simula{\c{c}}{\~a}o foi de 10 dias. Foram avaliados o quinto e
nono dia do conjunto das simula{\c{c}}{\~o}es. As
simula{\c{c}}{\~o}es de precipita{\c{c}}{\~a}o mostraram que o
aumento da resolu{\c{c}}{\~a}o vertical resultou em ligeira
melhora no esquema KF, entretanto o experimento BMJ com 50
n{\'{\i}}veis apresentou o melhor desempenho. Em
compara{\c{c}}{\~a}o com a rean{\'a}lise do ERA5, a temperatura
em 5 hPa {\'e} melhor representada com 70 n{\'{\i}}veis
verticais, pelos dois esquemas convectivos. Os padr{\~o}es de
grande escala da press{\~a}o ao n{\'{\i}}vel m{\'e}dio do mar,
temperatura a 2 metros e em 850 hPa s{\~a}o reproduzidos pelos
experimentos, por{\'e}m, as regi{\~o}es de latitudes mais altas
apresentaram as maiores diferen{\c{c}}as comparadas com a
rean{\'a}lise. Em geral, os resultados mostraram que o modelo GEF
apresentou melhor desempenho na configura{\c{c}}{\~a}o com 50
n{\'{\i}}veis verticais e com o esquema convectivo de BMJ para a
precipita{\c{c}}{\~a}o, press{\~a}o e escoamento em 250 hPa.
Entretanto, a configura{\c{c}}{\~a}o com 70 n{\'{\i}}veis
resultou melhora na temperatura em 250 hPa e 5 hPa e tamb{\'e}m
no escoamento em 5 hPa, em ambos os esquemas convectivos. Desta
forma, este estudo contribui no desenvolvimento e na melhora do
desempenho do modelo GEF. ABSTRACT: This work goals to study the
influence of vertical resolution and convection parameterization
schemes on the performance of the Global Eta Framework (GEF)
model. The work seeks to better represent the stratosphere in the
model and, consequently, improve predictions. The
Betts-Miller-Janjic (BMJ) and Kain-Fritsch (KF) convective
parameterizations were evaluated. The model was configured in a
horizontal resolution of 25 km, vertical resolutions of 50 and 70
levels, and top in 1 hPa. The model was integrated daily for the
month of January 2018, using the initial conditions of the Global
Forecast System model (GFS) of 00Z. The simulation period was 10
days. The fifth and ninth day of the simulations were evaluated.
The precipitation simulations showed that the increase in vertical
resolution resulted in a slight improvement in the KF scheme,
however the BMJ experiment with 50 levels showed the best
performance. In comparison with the ERA5 reanalysis, the
temperature at 5 hPa is best represented with 70 vertical levels,
by the two convective schemes. The large-scale patterns of
pressure at mean sea level, temperature at 2 meters and at 850 hPa
are reproduced by the experiments, however, the regions of higher
latitudes showed the greatest differences compared with
reanalysis. In general, the results showed that the GEF model
performed better in the configuration with 50 vertical levels and
with the BMJ convective scheme for precipitation, pressure and
flow in 250 hPa. However, the configuration with 70 levels
resulted in an improvement in temperature in 250 hPa and 5 hPa and
also in the flow in 5 hPa, in both convective schemes. Thus, this
study contributes to the development and improvement of the
performance of the GEF model.",
committee = "Nobre, Paulo (presidente) and Chan, Chou Sin (orientadora) and
Latinovic, Dragan and Capistrano, Vinicius Buscioli and Melo,
Maria Luciene Dias de",
englishtitle = "Influence of vertical resolution and convection parameterizations
on the performance of the Global model Eta Framework (GEF)",
language = "pt",
pages = "136",
ibi = "8JMKD3MGP3W34R/425FEJ2",
url = "http://urlib.net/ibi/8JMKD3MGP3W34R/425FEJ2",
targetfile = "publicao.pdf",
urlaccessdate = "24 abr. 2024"
}