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Characterization of Rape Field Microwave Emission and Implications to Surface Soil Moisture Retrievals (2012)
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BibTeX
@MISC{Schlenz12characterizationof,
author = {Florian Schlenz and Joachim Fallmann and Philip Marzahn and Er Loew and Wolfram Mauser},
title = {Characterization of Rape Field Microwave Emission and Implications to Surface Soil Moisture Retrievals},
year = {2012}
}
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Abstract
Abstract: In the course of Soil Moisture and Ocean Salinity (SMOS) mission calibration and validation activities, a ground based L-band radiometer ELBARA II was situated at the test site Puch in Southern Germany in the Upper Danube Catchment. The experiment is described and the different data sets acquired are presented. The L-band microwave emission of the biosphere (L-MEB) model that is also used in the SMOS L2 soil moisture algorithm is used to simulate the microwave emission of a winter oilseed rape field in Puch that was also observed by the radiometer. As there is a lack of a rape parameterization for L-MEB the SMOS default parameters for crops are used in a first step which does not lead to satisfying modeling results. Therefore, a new parameterization for L-MEB is developed that allows us to model the microwave emission of a winter oilseed rape field at the test site with better results. The soil moisture retrieval performance of the new parameterization is assessed in different retrieval configurations and the results are discussed. To allow satisfying results, the periods before and after winter have to be modeled with different parameter sets as the vegetation behavior is very different during these two development stages. With the new parameterization it is possible to retrieve soil moisture
Keyphrases
new parameterization rape field microwave emission surface soil moisture retrieval winter oilseed rape field microwave emission soil moisture rape parameterization smos default parameter ocean salinity vegetation behavior l-band radiometer elbara ii validation activity development stage different data set test site different retrieval configuration mission calibration southern germany soil moisture retrieval performance different parameter set test site puch upper danube catchment first step smos l2 soil moisture algorithm l-band microwave emission
