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Global-scale evaluation of roughness effects on C-Band AMSR-E observations
hal.structure.identifier | Beijing Normal University [BNU] | |
dc.contributor.author | WANG, Shu | |
hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
dc.contributor.author | WIGNERON, Jean-Pierre | |
hal.structure.identifier | Beijing Normal University [BNU] | |
dc.contributor.author | JIANG, Ling-Mei | |
hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
hal.structure.identifier | Centre d'études spatiales de la biosphère [CESBIO] | |
dc.contributor.author | PARRENS, Marie | |
hal.structure.identifier | Beijing Normal University [BNU] | |
dc.contributor.author | YU, Xiao-Yong | |
hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
dc.contributor.author | AL-YAARI, Amen | |
hal.structure.identifier | Beijing Normal University [BNU] | |
dc.contributor.author | YE, Qin-Yu | |
hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
hal.structure.identifier | Universitat de València [UV] | |
dc.contributor.author | FERNÁNDEZ-MORÁN, Roberto | |
hal.structure.identifier | Institute of Remote Sensing and Digital Earth | |
dc.contributor.author | JI, Wei | |
hal.structure.identifier | Centre d'études spatiales de la biosphère [CESBIO] | |
dc.contributor.author | KERR, Yann H. | |
dc.date.accessioned | 2024-04-08T12:03:12Z | |
dc.date.available | 2024-04-08T12:03:12Z | |
dc.date.issued | 2015 | |
dc.identifier.issn | 2072-4292 | |
dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/196252 | |
dc.description.abstractEn | Quantifying roughness effects on ground surface emissivity is an important step in obtaining high-quality soil moisture products from large-scale passive microwave sensors. In this study, we used a semi-empirical method to evaluate roughness effects (parameterized here by the parameter) on a global scale from AMSR-E (Advanced Microwave Scanning Radiometer for EOS) observations. AMSR-E brightness temperatures at 6.9 GHz obtained from January 2009 to September 2011, together with estimations of soil moisture from the SMOS (Soil Moisture and Ocean Salinity) L3 products and of soil temperature from ECMWF’s (European Centre for Medium-range Weather Forecasting) were used as inputs in a retrieval process. In the first step, we retrieved a parameter (referred to as the parameter) accounting for the combined effects of roughness and vegetation. Then, global MODIS NDVI data were used to decouple the effects of vegetation from those of surface roughness. Finally, global maps of the Hr parameters were produced and discussed. Initial results showed that some spatial patterns in the values could be associated with the main vegetation types (higher values of were retrieved generally in forested regions, intermediate values were obtained over crops and grasslands, and lower values were obtained over shrubs and desert) and topography. For instance, over the USA, lower values of were retrieved in relatively flat regions while relatively higher values were retrieved in hilly regions. | |
dc.language.iso | en | |
dc.publisher | MDPI | |
dc.rights.uri | http://creativecommons.org/licenses/by/ | |
dc.subject | soil moisture | |
dc.subject.en | soil surface roughness | |
dc.subject.en | AMSR-E | |
dc.title.en | Global-scale evaluation of roughness effects on C-Band AMSR-E observations | |
dc.type | Article de revue | |
dc.identifier.doi | 10.3390/rs70505734 | |
dc.subject.hal | Planète et Univers [physics]/Sciences de la Terre | |
dc.subject.hal | Sciences de l'ingénieur [physics]/Electromagnétisme | |
dc.subject.hal | Sciences de l'ingénieur [physics]/Traitement du signal et de l'image | |
bordeaux.journal | Remote Sensing | |
bordeaux.page | 5734-5757 | |
bordeaux.volume | 7 | |
bordeaux.hal.laboratories | Interactions Soil Plant Atmosphere (ISPA) - UMR 1391 | * |
bordeaux.issue | 5 | |
bordeaux.institution | Bordeaux Sciences Agro | |
bordeaux.institution | INRAE | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-02631606 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-02631606v1 | |
bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Remote%20Sensing&rft.date=2015&rft.volume=7&rft.issue=5&rft.spage=5734-5757&rft.epage=5734-5757&rft.eissn=2072-4292&rft.issn=2072-4292&rft.au=WANG,%20Shu&WIGNERON,%20Jean-Pierre&JIANG,%20Ling-Mei&PARRENS,%20Marie&YU,%20Xiao-Yong&rft.genre=article |
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