6533b861fe1ef96bd12c4575
RESEARCH PRODUCT
L-Band radiative properties of vine vegetation at the MELBEX III SMOS Cal/Val Site
Yann KerrChristian MätzlerMike SchwankIngo VölkschErnesto López-baezaJean-pierre Wigneronsubject
Mediterranean climateBrightness010504 meteorology & atmospheric sciencesvegetation mapping0211 other engineering and technologiesMicrowave radiometry550 - Earth sciences02 engineering and technologyAtmospheric sciences01 natural sciencesVineyard[SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/EcosystemsRadiative transferElectrical and Electronic Engineering021101 geological & geomatics engineering0105 earth and related environmental sciencesRemote sensingRadiometervegetation mapping.Vegetation15. Life on landradiative transferBrightness temperatureSoil waterGeneral Earth and Planetary SciencesEnvironmental sciencesoil moisturedescription
Radiative properties at 1.4 GHz of vine vegetation are investigated by measuring brightness temperatures with the ETH L-band Radiometer II (ELBARA II) operated on a tower at the Mediterranean Ecosystem L-band Characterisation Experiment III (MELBEX III) field site in Spain. To this aim, experiments with and without a reflecting foil placed under the vines were performed for the vegetation winter and summer states, respectively, to provide prevailingly information on vegetation transmissivities. The resulting parameters, which can be considered as "ground truth" for the MELBEX III vineyard, were retrieved from brightness temperature at horizontal and vertical polarization measured at observation angles between 30◦ and 60◦. These MELBEX III "ground-truth" values are representative for the Mediterranean Soil Moisture and Ocean Salinity (SMOS) Valencia Anchor Station (VAS) and therefore valuable for the corresponding calibration and validation activities over the VAS site. Likewise, quantifying the uncertainties of the measured brightness temperatures was also important, particularly as several equivalent ELBARA II instruments are currently operative in ongoing SMOS-related field campaigns.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-05-01 |