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IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 48, NO. 1, JANUARY 2010 491 Land Surface Brightness Temperature
 

Summary: IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 48, NO. 1, JANUARY 2010 491
Land Surface Brightness Temperature
Modeling Using Solar Insolation
Haroon Stephen, Sajjad Ahmad, and Thomas C. Piechota
Abstract--Retrieval of land surface emissivity and temperature
from microwave brightness temperature data is a complex prob-
lem. The diurnal variation of temperature due to the diurnal cycle
of solar radiation and weather conditions makes this problem even
more challenging. In this paper, we use solar radiation in modeling
the temporal variation of the brightness temperature state of the
surface. Solar insolation modeling is used to estimate the diurnal
variation of land surface brightness temperature. Solar radia-
tion and brightness temperature are linked through temperature
of the surface which is derived based on the radiation balance
equation. The temperature state model behaves consistent to the
measured temperature data. The root-mean-square (rms) error
of the model and measured temperature during 1999 is 1.47 K
with a correlation of 0.98. Brightness temperature is calculated
as a product of physical temperature and emissivity. This rela-
tionship is used to transform the temperature state model into

  

Source: Ahmad, Sajjad - Department of Civil and Environmental Engineering, University of Nevada at Las Vegas

 

Collections: Engineering