@PhDThesis{Domingues:2015:ReEfHe,
author = "Domingues, Isabel Lopes Pilotto",
title = "Representa{\c{c}}{\~a}o dos efeitos de heterogeneidades da
superf{\'{\i}}cie sobre o clima local em uma regi{\~a}o de
paisagem fragmentada na Amaz{\^o}nia utilizando o modelo
ETA/NOAH-MP",
school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
year = "2015",
address = "S{\~a}o Jos{\'e} dos Campos",
month = "2015-08-27",
keywords = "heterogeneidades, uso da terra, modelagem, subgrade,
parametriza{\c{c}}{\~a}o, heterogeneities, land use,
parameterization.",
abstract = "O presente trabalho investiga os efeitos da
representa{\c{c}}{\~a}o das heterogeneidades da
superf{\'{\i}}cie na simula{\c{c}}{\~a}o do clima local pelo
modelo Eta/Noah-MP em uma regi{\~a}o fragmentada da
Amaz{\^o}nia, sem a necessidade de aumentar a
resolu{\c{c}}{\~a}o espacial do modelo. Para tal, fez-se o uso
de parametriza{\c{c}}{\~a}o para incorporar os efeitos dos
processos de subgrade, atrav{\'e}s da aproxima{\c{c}}{\~a}o
tile. Foram realizados tr{\^e}s tipos de experimentos com o
modelo Eta/Noah-MP nas resolu{\c{c}}{\~o}es espaciais de 5 km
com (TI) e sem a aproxima{\c{c}}{\~a}o tile (PA), e de 2 km (AR)
para representar a alta resolu{\c{c}}{\~a}o. O per{\'{\i}}odo
analisado dos experimentos corresponde aos meses de mar{\c{c}}o
(esta{\c{c}}{\~a}o chuvosa) e setembro (esta{\c{c}}{\~a}o
seca) de 2003. Os resultados mostram que em geral o uso da
aproxima{\c{c}}{\~a}o tile apresenta uma melhoria na
simula{\c{c}}{\~a}o dos padr{\~o}es espaciais dos fluxos
turbulentos e das circula{\c{c}}{\~o}es locais nas regi{\~o}es
mais fragmentadas do dom{\'{\i}}nio. O experimento com o uso dos
tiles aumenta a magnitude da temperatura {\`a}
superf{\'{\i}}cie, do fluxo de calor sens{\'{\i}}vel, do
albedo {\`a} superf{\'{\i}}cie, da radia{\c{c}}{\~a}o de onda
longa emitida pela superf{\'{\i}}cie, e do vento a 10 m. E reduz
a umidade do solo e a radia{\c{c}}{\~a}o l{\'{\i}}quida
absorvida pela superf{\'{\i}}cie. Em geral, o experimento com
tiles aumenta o fluxo de calor latente na maior parte do
dom{\'{\i}}nio, entretanto, nota-se uma redu{\c{c}}{\~a}o nas
regi{\~o}es mais fragmentadas da {\'a}rea de estudo. N{\~a}o
h{\'a} uma concord{\^a}ncia quanto aos sinais dos impactos do
experimento com o uso da aproxima{\c{c}}{\~a}o tile na
precipita{\c{c}}{\~a}o simulada. Este experimento tamb{\'e}m
apresenta impactos na camada limite. Estes efeitos de subgrade no
clima local s{\~a}o maiores na esta{\c{c}}{\~a}o seca do que na
esta{\c{c}}{\~a}o chuvosa. Os resultados sugerem que o grau dos
impactos dos processos de subgrade no clima local se relaciona com
a escala da fragmenta{\c{c}}{\~a}o. Conclui-se que a
utiliza{\c{c}}{\~a}o da aproxima{\c{c}}{\~a}o tile responde
adequadamente as quest{\~o}es sobre os impactos das
mudan{\c{c}}as no uso do solo em {\'a}reas fragmentadas da
Amaz{\^o}nia. Entretanto, estes impactos podem ter sido em parte
mascarados pelos tratamentos de corpos de {\'a}gua do modelo
Noah-MP, e pelo esquema de convec{\c{c}}{\~a}o c{\'u}mulos do
modelo Eta. ABSTRACT: This study evaluates the effects of
representation of the surface heterogeneities in the simulation of
the local climate by Eta/Noah-MP model in a fragmented region of
Amazon, without the need to increase the spatial resolution of the
model. For this purpose, the parameterization used to incorporate
the effects of the subgrade process was the tile approach. Three
experiments with the Eta/Noah-MP model were set up as follows: two
experiments with the spatial resolution of 5 km, one without the
use of tile approach (PA), and the other experiment with the use
of this approach (TI); and one experiment set up on the spatial
resolution of 2 km, without the use of the tile approach (AR),
which represents the high resolution. The focus is on the rainy
and dry seasons, which correspond to the months of March and
September 2003. In general, the results show that the use of the
tile approach presents an improvement in the simulation of the
spatial patterns of the turbulent fluxes and local circulations in
the regions with extensive fragmentation of the domain. The
experiment with the use of tiles increases the magnitude of the
surface temperature, the sensible heat flux, the surface albedo,
the upward longwave radiation, and the wind at 10 m. And, it
reduces soil moisture and net radiation. In general, the
experiment with tiles increases the latent heat flux in most of
the domain, however, there is a reduction in the fragmented
regions of the study area. There is no agreement as to the signs
of the impacts of the experiment using the approach tile on
simulated rainfall. This experiment also has impacts in the
boundary layer. The effects of the representation of the surface
heterogeneities are higher in the dry season than in the rainy
season. The results suggest that the degree of impact of the
subgrade process in the local climate relates to the scale of the
fragmentation. We conclude that the use of tile approach
adequately respond the issues of the impacts of changes in land
use in fragmented areas of the Amazon. However, these impacts may
have been partly masked by the treatments of water bodies from
Noah-MP model and the scheme of cumulus convection from model
Eta.",
committee = "Chan, Chou Sin (presidente) and Oliveira, Gilvan Sampaio de
(orientador) and Tomasella, Javier (orientador) and Candido, Luiz
Antonio and Correia, Francis Wagner Silva",
copyholder = "SID/SCD",
englishtitle = "Representation of the surface heterogeneities effects on local
climate over a fragmented region in the Amazon using the model
ETA/NOAH-MP",
language = "pt",
pages = "206",
ibi = "8JMKD3MGP3W34P/3JU9JU8",
url = "http://urlib.net/ibi/8JMKD3MGP3W34P/3JU9JU8",
targetfile = "publicacao.pdf",
urlaccessdate = "28 abr. 2024"
}