Results 301 to 310 of about 5,074,442 (338)

Sensitivity of Land Covers on Passive Microwave Brightness Temperature

IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
Obvious increased microwave brightness temperature has been observed around the epicenters before strong earthquakes. It can be looked as a potential signal for thermal anomalies related to earthquake activities. However, passive microwave observation can be affected by many environmental factors, such as soil moisture, vegetation cover, surface ...
Feng Jing, Ramesh P. Singh
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Influence of microphysical cloud parameterizations on microwave brightness temperatures

IEEE Transactions on Geoscience and Remote Sensing, 2002
The microphysical parameterization of clouds and rain cells plays a central role in atmospheric forward radiative transfer models used in calculating microwave brightness temperatures. The absorption and scattering properties of a hydrometeor-laden atmosphere are governed by particle phase, size distribution, aggregate density, shape, and dielectric ...
Gail M. Skofronick-Jackson, Albin J. Gasiewski, James R. Wang   +2 more
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A Global Analysis of Passive Microwave Brightness Temperature Diurnal Cycle

IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium, 2020
Passive microwave brightness temperature (TB) radiometers are widely used to retrieve several atmospheric and surface parameters such as precipitation, soil moisture, freeze and thaw, water vapor, air temperature profile, and land surface emissivity.
Zahra Sharifnezhad, Hamid Norouzi, Reginald A. Blake, Emmanuel Gil   +3 more
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Microwave brightness temperatures of the greenland ice sheet

Advances in Space Research, 1989
Abstract Microwave brightness temperatures measured by the Scanning Multichannel Microwave Radiometer on NIMBUS-7 over the Greenland ice sheet are analyzed for temporal, spatial, and frequency and polarization variations. Two periods are investigated, November 1978 to October 1980 and January to March 1982, i.e.
H. Zhang, L.Toudal Pedersen, P. Gudmandsen   +2 more
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Microwave brightness temperature variations caused by ocean internal waves

IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477), 2004
Oceanic internal waves were observed by microwave radiometers from a blimp during the COPE'99 experiment. Brightness temperature variations caused by sea surface roughness modulation and enhanced wave breaking were compared with model calculations. It is shown that direct wave amplitude modulation by currents cannot explain the observed brightness ...
Vladimir G. Irisov, Oleg A. Godin
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Spatial Correlation Patterns of L-Band Microwave Brightness Temperature

IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium, 2008
Incorporating the spatial correlation information into the land data assimilation system provides the opportunities to improve the analysis quality of the assimilation system. In order to make use of the spatial autocorrelation information effectively in the land data assimilation system, we used the geostatistics to explore and describe the spatial ...
Xujun Han, Xin Li 0029, Rui Jin, Shuguo Wang   +3 more
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A model function for ocean microwave brightness temperatures

Journal of Geophysical Research: Oceans, 1983
We derive a relatively simple, yet accurate, relationship between the microwave brightness temperature of the ocean and conventional oceanographic and meteorological parameters. To begin with, the brightness temperature of the ocean and the intervening atmosphere is expressed in terms of integrals for the radiative scattering and emission from the sea ...
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Conversion issues between microwave radiance and brightness temperature

Journal of Quantitative Spectroscopy and Radiative Transfer, 2008
Abstract Microwave radiances are usually converted into brightness temperatures for data assimilation and retrievals. The Rayleigh–Jeans approximation has been believed to be a good approximation for the conversion at low frequencies, but inaccurate at high frequencies.
Quanhua Liu, Fuzhong Weng, Y. Han
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Proposed Development of a National Standard for Microwave Brightness Temperature

2006 IEEE International Symposium on Geoscience and Remote Sensing, 2006
We review the advantages of a national standard for microwave brightness temperature and outline our proposed approach toward developing such a standard. The proposal is a combined standard that would comprise both a standard radiometer, traceable to primary noise standards, and a fully characterized standard target.
J. Randa, A. Cox, D. Walker
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Use of microwave brightness temperatures with a general circulation model

Journal of Geophysical Research: Atmospheres, 1995
Brightness temperature maps from global monthly mean general circulation model (GCM) atmospheric and surface fields are calculated with a new microwave radiative transfer postprocessor. This microwave radiative transfer model uses fields from the 4° by 5° Goddard Institute for Space Studies (GISS) GCM Model II and subsequent developmental versions of ...
Kathryn Pierce Shah, David Rind
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