On the synergy of SMOS and Terra/Aqua MODIS: high resolution soil moisture maps in near real-time
Tipo de documentoTexto en actas de congreso
Fecha de publicación2013
EditorInstitute of Electrical and Electronics Engineers (IEEE)
Condiciones de accesoAcceso restringido por política de la editorial
An innovative downscaling approach to obtain fine-scale soil moisture estimates from 40 km SMOS observations has been developed. It optimally blends SMOS multi-angular and full-polarimetric information with MODIS visible/data into high resolution soil moisture maps. The core of the algorithm is a model that linksmicrowave/optical sensitivity to soilmoisture and linearly relates the two instruments across spatial scales. This algorithm has been implemented at SMOS-BEC facilities and near real-time maps of disaggregated soil moisture over the Iberian Peninsula are being distributed. In this work, the temporal and spatial variability of these maps is evaluated through comparison with ground-basedmesurements acquired at the REMEDHUS soil moisture network, in the central part of the Duero basin, Spain. Results from a two-year time-series comparison show that downscaled soil moisture maps compare well with in situ data and nicely reproduce soil moisture dynamics at a 1 km spatial scale.
CitaciónPiles, M., Vall-llossera, M., Camps, A., Sanchez, N., Martinez, J., Martinez, J., Gonzalez, V., Riera, R. On the synergy of SMOS and Terra/Aqua MODIS: high resolution soil moisture maps in near real-time. A: IEEE International Geoscience and Remote Sensing Symposium. "IEEE International Geoscience and Remote Sensing Symposium, July 2013, Melbourne, Australia.". Melbourne: Institute of Electrical and Electronics Engineers (IEEE), 2013, p. 3423-3426.