Estimation of the Atmospheric Mean Radiating Temperature Throughout the World in a Nonscattering Atmosphere

The atmosphere mean radiating temperature T mr is relevant for different applications in communications and remote sensing; however, it is not easily measured. Alternatively, it is estimated in many cases from measurements of surface temperature T s using empirical formulas. In this letter, new appr...

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Bibliographic Details
Published in:IEEE geoscience and remote sensing letters 2016-02, Vol.13 (2), p.167-171
Main Authors: Lucas-Vegas, Maria Jose, Riera, Jose Manuel
Format: Article
Language:English
Subjects:
Approximation
Approximation methods
Atmospheric measurements
Atmospheric modeling
Atmospherics
Attenuation
Empirical analysis
Estimation
Mathematical models
microwave propagation
microwave radiometry
millimeter-wave propagation
Remote sensing
Temperature
Temperature measurement
Tunneling magnetoresistance
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Summary:The atmosphere mean radiating temperature T mr is relevant for different applications in communications and remote sensing; however, it is not easily measured. Alternatively, it is estimated in many cases from measurements of surface temperature T s using empirical formulas. In this letter, new approaches are proposed for the estimation of T mr from T s on the basis of physical attenuation models applied to a large database of atmospheric profiles, gathered using radiosoundings carried out on 60 sites from all over the world. Global empirical estimations are provided for different frequency bands between 12 and 100 GHz, as well as more refined expressions calculated for different climatic zones. The new estimations represent an improvement on previous approximations.
ISSN:1545-598X
1558-0571
DOI:10.1109/LGRS.2015.2504409