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Evaluation of microwave remote sensing for monitoring live fuel moisture content in the Mediterranean region

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierState Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth
hal.structure.identifierUniversity of Chinese Academy of Sciences [Beijing] [UCAS]
dc.contributor.authorFAN, Lei
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorWIGNERON, Jean-Pierre
hal.structure.identifierState Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth
dc.contributor.authorXIAO, Qing
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorAL YAARI, Amen
hal.structure.identifierState Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth
dc.contributor.authorWEN, Jianguang
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorMARTIN-STPAUL, Nicolas
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorDUPUY, Jean-Luc
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorPIMONT, François
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
dc.contributor.authorAHMAD, Al Bitar
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorFERNANDEZ MORAN, Roberto
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
dc.contributor.authorKERR, Yann H.
dc.date.accessioned2024-04-08T12:05:15Z
dc.date.available2024-04-08T12:05:15Z
dc.date.issued2018
dc.identifier.issn0034-4257
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196346
dc.description.abstractEnLive fuel moisture content (LFMC) is an important factor in fire risk management in the Mediterranean region. Drawing upon a large network of stations (the Réseau Hydrique) measuring LFMC for operational fire danger assessment in the south-eastern region of France, this study assesses the ability of several long-term passive microwave remote sensing indices to capture the LFMC temporal dynamic of various Mediterranean shrub species. Microwave remote sensing has a high potential for monitoring LFMC independently of several constraints (e.g., atmospheric and cloud contamination effects) associated with optical-infrared and thermal remote sensing observations. The following four microwave-derived indices are considered: (1) the Essential Climate Variable near-surface soil moisture (ECV_SM); (2) the root-zone soil moisture (ECV_RZSM) derived from ECV_SM; (3) the microwave polarization difference index (MPDI) computed from five microwave frequencies (C, X, Ku, K and Ka-band corresponding to 6.9, 10.7, 18.7, 23.8 and 36.5 GHz respectively); and (4) the vegetation optical depth (VOD) at C- and X-band (from the Advanced Microwave Scanning Radiometer for the Earth observing system, AMSR-E). Firstly, an evaluation of the root-zone soil moisture ECV_RZSM against a network of soil moisture measurements (SMOSMANIA in southern France) gave satisfactory results. For most of the Réseau Hydrique sites, the present study found good agreement between LFMC and individual microwave indices, including root-zone soil moisture, VOD at X-band, and MPDI at X and Ku-bands, all averaged over the 15 days preceding the in-situ LFMC measurements. VOD at X-band showed the best agreement with the in situ LFMC data (median of correlation coefficients over all in situ sites = 0.43). Further comparisons between LFMC data and several optical indices computed from the Moderate Resolution Imaging Spectrometer (MODIS) data including normalized difference vegetation index (NDVI), soil adjusted vegetation index (SAVI), visible atmospheric resistant index (VARI), normalized difference water index (NDWI), normalized difference infrared index 6 (NDII6), normalized difference infrared index 7 (NDII7) and global vegetation moisture index (GVMI) were made. The comparisons showed that VARI and SAVI, as optical greenness indices, outperform the microwave indices and other optical indices with median of correlation coefficients of 0.66 and 0.65, respectively. Overall, this study shows that passive microwave indices, particularly VOD, are efficient proxies for LFMC of Mediterranean shrub species and could be used along with optical indices to evaluate fire risks in the Mediterranean region.
dc.language.isoen
dc.publisherElsevier
dc.subjectRoot zone soil moisture
dc.subjectLive fuel moisture content
dc.subjectVARI
dc.subjectNDVI
dc.subjectSAVI
dc.subject.enMicrowave remote sensing
dc.subject.enOptical remote sensing
dc.subject.enVegetation optical depth
dc.subject.enFire risk
dc.subject.enLFMC
dc.subject.enVOD
dc.title.enEvaluation of microwave remote sensing for monitoring live fuel moisture content in the Mediterranean region
dc.typeArticle de revue
dc.identifier.doi10.1016/j.rse.2017.11.020
dc.subject.halSciences de l'environnement/Milieux et Changements globaux
bordeaux.journalRemote Sensing of Environment
bordeaux.page210-223
bordeaux.volume205
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02623728
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02623728v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Remote%20Sensing%20of%20Environment&rft.date=2018&rft.volume=205&rft.spage=210-223&rft.epage=210-223&rft.eissn=0034-4257&rft.issn=0034-4257&rft.au=FAN,%20Lei&WIGNERON,%20Jean-Pierre&XIAO,%20Qing&AL%20YAARI,%20Amen&WEN,%20Jianguang&rft.genre=article


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