0000000000407614

AUTHOR

M. Vall-llossera

showing 5 related works from this author

A spatially consistent downscaling approach for SMOS using an adaptive window

2017

The European Space Agency (ESA)'s Soil Moisture and Ocean Salinity (SMOS) is the first spaceborne mission using L-band radiometry to monitor the Earth's global surface soil moisture (SM). After more than 7 years in orbit, many studies have contributed to improve the quality and applicability of SMOS-derived SM maps. In this research, a novel downscaling algorithm for SMOS is proposed to obtain high-resolution (HR) SM maps at 1 km (L4), from the ∼40 km native resolution of the instrument. This algorithm introduces the concept of a shape adaptive moving window as an improvement of the current semi-empirical downscaling approach at SMOS Barcelona Expert Center, based on the “universal triangle…

Atmospheric ScienceBrightnessTeledeteccióMean squared error010504 meteorology & atmospheric sciencesREMEDHUS0211 other engineering and technologiesHigh resolution02 engineering and technology01 natural sciencesNormalized Difference Vegetation IndexBECComputers in Earth SciencesImage resolution021101 geological & geomatics engineering0105 earth and related environmental sciencesRemote sensingNative resolutionAdaptive moving windowLow resolutionMoving windowRemote sensing:Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció [Àrees temàtiques de la UPC]Orbit (dynamics)RadiometryEnvironmental scienceSpatial variabilitySoil moistureSòls -- HumitatDownscalingSMOS
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Influence of Quality Filtering Approaches in BEC SMOS L3 Soil Moisture Products

2019

2019 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2019), 28 July - 2 August 2019, Yokohama, Japan

TeledeteccióDQXRoot mean square differenceRemote sensingQuality (physics):Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció [Àrees temàtiques de la UPC]Benchmark (surveying)Data qualityRange (statistics)ChisquaredEnvironmental scienceSoil moistureSòls -- HumitatWater contentRemote sensingAlternative strategySMOS
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Mapping Carbon Stocks In Central And South America With Smap Vegetation Optical Depth

2019

Mapping carbon stocks in the tropics is essential for climate change mitigation. Passive microwave remote sensing allows estimating carbon from deep canopy layers through the Vegetation Optical Depth (VOD) parameter. Although their spatial resolution is coarser than that of optical vegetation indices or airborne Lidar data, microwaves present a higher penetration capacity at low frequencies (L-band) and avoid cloud masking. This work compares the relationships of airborne carbon maps in Central and South America with both (i) SMAP L-band VOD at 9 km gridding and (ii) MODIS Enhanced Vegetation Index (EVI). Models to estimate carbon stocks are built from these two satellite-derived variables.…

CanopyL bandTeledetecció010504 meteorology & atmospheric sciencesRadiofreqüència0208 environmental biotechnologyClimate changeOptical radar02 engineering and technology01 natural sciencesComunicacions òptiquesCarboniImage resolution0105 earth and related environmental sciencesRemote sensingVegetation mappingVegetationOptical communicationsTropicsEnhanced vegetation indexRemote sensing:Enginyeria de la telecomunicació [Àrees temàtiques de la UPC]Carbon020801 environmental engineering:Enginyeria de la telecomunicació::Telecomunicació òptica [Àrees temàtiques de la UPC]Climate change mitigationRemote sensing by laser beamSpatial ecologyEnvironmental scienceSistemes de gestió mediambientalIGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium
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The WISE 2000 and 2001 Field Experiments in Support of the SMOS Mission:Sea Surface L-Band Brightness Temperature Observations and Their Application …

2004

Camps, Adriano ... et al.-- 20 pages, 16 figures, 3 tables

010504 meteorology & atmospheric sciences0211 other engineering and technologiesWind02 engineering and technologySea stateAtmospheric sciences01 natural sciencesOceanographic techniquesWind waveSurface roughnessEmissivitySeawater14. Life underwaterElectrical and Electronic EngineeringRadiometry[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment021101 geological & geomatics engineering0105 earth and related environmental sciencesRemote sensingPhysics[SDU.OCEAN]Sciences of the Universe [physics]/Ocean AtmosphereRadiometerFoamsOcean wavesRemote sensingSea surface temperature13. Climate actionBrightness temperatureGeneral Earth and Planetary SciencesSMOS MissionSignificant wave height
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SMOS REFLEX 2003: L-band emissivity characterization of vineyards

2005

The goal of the Soil Moisture and Ocean Salinity mission over land is to infer surface soil moisture from multiangular L-band radiometric measurements. As the canopy affects the microwave emission of land, it is necessary to characterize different vegetation layers. This paper presents the Reference Pixel L-Band Experiment (REFLEX), carried out in June-July 2003 at the Vale/spl grave/ncia Anchor Station, Spain, to study the effects of grapevines on the soil emission and on the soil moisture retrieval. A wide range of soil moisture (SM), from saturated to completely dry soil, was measured with the Universitat Polite/spl grave/cnica de Catalunya's L-band Automatic Radiometer (LAURA). Concurre…

Canopy010504 meteorology & atmospheric sciencesUniversitat Politecnica de CatalunyaOceanografia -- Instruments0211 other engineering and technologiesMicrowave measurements02 engineering and technologyradiometryAtmospheric sciencesSensors remots01 natural sciencesvineyardsHidrologia -- Aparells i instrumentssoil emissionWater contentGeophysical instrumentsmicrowave measurementValencia Anchor StationRemote sensing[INFO.INFO-IA] Computer Science [cs]/Computer Aided EngineeringL-band emissivitysoil roughnessVegetació -- CartografiaOpacitysoil temperaturevegetation mappingOceanographic instrumentsBoundary layer (Meteorology)VineyardsoilGeofísica -- Aparells i instrumentsCapa límit (Meteorologia)Hydrological instrumentsEmissivity:Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Circuits de microones radiofreqüència i ones mil·limètriques [Àrees temàtiques de la UPC]RadiometriaElectrical and Electronic EngineeringL-band microwave radiometry021101 geological & geomatics engineering0105 earth and related environmental sciencesRemote sensingReference Pixel L-Band ExperimentRadiometervegetation layersopacity15. Life on land[INFO.INFO-IA]Computer Science [cs]/Computer Aided EngineeringAD 2003 06 to 07SMOS REFLEX 2003:Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció [Àrees temàtiques de la UPC]Soil waterMicroones -- MesuramentL-band Automatic RadiometerGeneral Earth and Planetary SciencesEnvironmental scienceRadiometryhydrological techniquesSoil Moisture and Ocean Salinity missionsoil moistureLAURAland microwave emissionalbedo
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