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Inventi Impact - Microwave

Articles

  • Inventi:emw/79/14
    HIGH-RESOLUTION, NEAR REAL-TIME SIMULATION OF MICROWAVE RADIANCE USING A SIMPLE LAND-COVER BASED EMISSIVITY PRIOR
    Dimitrios Katsanos, Eduardo Garcia-Ortega, Manuel de Castro, Enrique Arias, Francisco J Tapiador

    Satellite simulators are used to calculate the brightness temperature (Tb) that would be measured by a space borne sensor under a set of atmospheric conditions accounting for the radiometric characteristics of the sensor and the orbital parameters of the satellite. In this study, a simple approach is proposed for the parameterization of emissivity over land, a key parameter for the calculation of microwave Tb.The rationale is to simulate a large ensemble of emissivity values for each frequency and surface characteristics and then relate the most likely observed value with soil characteristics. The derived emissivity values are used for the simulation of Tb and simulated radiance is then compared with satellite observations. It is shown that this method improves the simulation of radiance and that it is suitable to provide a first guess of the emissivity value (a prior) that can then be refined using iterative procedures.

    How to Cite this Article
    CC Compliant Citation: Dimitrios Katsanos, Eduardo García- Ortega, Manuel de Castro, Enrique Arias, and Francisco J. Tapiador, “High-Resolution, Near Real-Time Simulation of Microwave Radiance Using a Simple Land-Cover Based Emissivity Prior,” Advances in Meteorology, vol. 2014, Article ID 585296, 15 pages, 2014. doi:10.1155/2014/585296. Copyright © 2014 Dimitrios Katsanos et al. This is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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