Tesis
Efeito da urbanização na Amazônia Meridional sobre o balanço de energia e a evapotranpiração por sensoriamento remoto
Fecha
2016-09-26Registro en:
PINHEIRO, Jean Reinildes. Efeito da urbanização na Amazônia Meridional sobre o balanço de energia e a evapotranpiração por sensoriamento remoto. 2016. 142 f. Tese (Doutorado em Física Ambiental) - Universidade Federal de Mato Grosso, Instituto de Física, Cuiabá, 2016.
Autor
Biudes, Marcelo Sacardi
http://lattes.cnpq.br/7273935697798004
Biudes, Marcelo Sacardi
893.219.011-91
http://lattes.cnpq.br/7273935697798004
Santos, Flávia Maria de Moura
998.134.911-91
http://lattes.cnpq.br/4000857814123856
893.219.011-91
Machado, Nadja Gomes
713.049.401-87
http://lattes.cnpq.br/9058690473723423
Dalmagro, Higo José
089.683.367-41
http://lattes.cnpq.br/2968364807067338
Danelichen, Victor Hugo de Morais
012.729.331-05
http://lattes.cnpq.br/3461595808977435
Institución
Resumen
The colonization process in the Amazon, which occurred in the early 70s
contributed to the constant changes in coverage and land use. These changes due
to the replacement of forest areas for urban area, has great influence on the
hydrological cycle and the local climate. Thus, derived from orbital sensors data is
an alternative to obtain surface information with wide spatio-temporal coverage of
energy and evapotranspiration flows. In this context, this study aimed to analyze
the effect of urbanization in the southern Amazon on the energy balance and
evapotranspiration. The study was conducted with multispectral images
TM/Landsat 5 for the urban area of the municipality of Sinop with temporal
variation from 1985 to 2010. In this way it was possible to analyze the spatial and
temporal pattern of energy flows and daily evapotranspiration and also assess the
estimates made by the SEBAL for the different classes of land use, which was
validated with data obtained by the method of eddy covariance. The results
showed that in SEBAL validate the instantaneous radiation and daily balances
were the parameters that showed best agreement between the estimated and
measured data. The values in the Rn24 h, LE and H were overestimated, while the
values G24 h, Rn24h and ET24h were underestimated. Between land use classes, the
dense vegetation class fell by 110,2 km2
in their area, while the altered region
class there was an increase of 96,7 km2
. All parameters analyzed showed different
responses for different land uses to which caused an increase in albedo (0,02),
temperature increase of the surface (7,6°C), increase of the heat flow in soil (21,5
W m-2
), increasing the sensible heat flow (185,1 W m-2
), reduction in NDVI (0,22
m
2
m
-2
), reducing the flow of latent heat (206,4 W m-2
) and therefore decrease in
daily evapotranspiration (2,1 mm d-1
). The percentage of Rn followed the pattern
observed for use and occupation, which for the year 1985 the highest percentage
of Rn was intended for latent heat flux, while in 2010 the highest percentage was
allocated to sensible heat flux.