Abstract:
The atmosphere mean radiating temperature Tmr is relevant for different applications in communications and remote sensing; however, it is not easily measured. Alternative...Show MoreMetadata
Abstract:
The atmosphere mean radiating temperature Tmr 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 Ts using empirical formulas. In this letter, new approaches are proposed for the estimation of Tmr from Ts 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.
Published in: IEEE Geoscience and Remote Sensing Letters ( Volume: 13, Issue: 2, February 2016)