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Dissimilarity between dust, heat, and momentum turbulent transports during aeolian soil erosion

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorDUPONT, Sylvain
hal.structure.identifierLaboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
hal.structure.identifierInstitut d'écologie et des sciences de l'environnement de Paris [iEES Paris ]
dc.contributor.authorRAJOT, J.-L
hal.structure.identifierInstitut des Régions Arides [IRA]
dc.contributor.authorLABIADH, M.
hal.structure.identifierLaboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
dc.contributor.authorBERGAMETTI, G.
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorLAMAUD, Eric
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorIRVINE, M.
hal.structure.identifierLaboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
dc.contributor.authorALFARO, S.
hal.structure.identifierInstitut d'écologie et des sciences de l'environnement de Paris [iEES Paris ]
hal.structure.identifierLaboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
dc.contributor.authorBOUET, C.
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorFERNANDES, R.
hal.structure.identifierLaboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
dc.contributor.authorKHALFALLAH, B.
hal.structure.identifierLaboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
dc.contributor.authorMARTICORÉNA, B.
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorBONNEFOND, J.
hal.structure.identifierLaboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
dc.contributor.authorCHEVAILLIER, S.
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorGARRIGOU, D.
hal.structure.identifierLaboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
dc.contributor.authorHENRY-DES-TUREAUX, T
hal.structure.identifierInstitut des Régions Arides [IRA]
dc.contributor.authorSEKRAFI, S.
hal.structure.identifierLaboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
dc.contributor.authorZAPF, P.
dc.date.accessioned2024-04-08T12:07:57Z
dc.date.available2024-04-08T12:07:57Z
dc.date.issued2019-01-22
dc.identifier.issn2169-897X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196489
dc.description.abstractEnMeasuring accurately size-resolved dust flux near the surface is crucial for better quantifying dust losses by semiarid soils. Dust fluxes have been usually estimated from the flux-gradient approach, assuming similarity between dust and momentum turbulent transport. This similarity has, however, never been verified. Here we investigate the similarity between dust (0.3 to 6.0 m in diameter), momentum, and heat fluxes during aeolian erosion events. These three fluxes were measured by the Eddy Covariance technique during the WIND-O-V (WIND erOsion in presence of sparse Vegetation's) 2017 field experiment over an isolated erodible bare plot in South Tunisia. Our measurements confirm the prevalence of ejection and sweep motions in transporting dust as for heat and momentum. However, our measurements also reveal a different partition of the dust flux between ejection and sweep motions and between eddy time scales compared to that of momentum and heat fluxes. This dissimilarity results from the intermittency of the dust emission compared to the more continuous emission (absorption) of heat (momentum) at the surface. Unlike heat emission and momentum absorption, dust release is conditioned by the wind intensity to initiate sandblasting. Consequently, ejection motions do not carry dust as often as heat and low momentum from the surface. This dissimilarity diminishes with increasing wind intensity as saltation patterns, and thus dust emission through sandblasting, become spatially more frequent. Overall, these findings may have implications on the evaluation of dust flux from techniques based on similarity with momentum or heat turbulent transport.
dc.language.isoen
dc.publisherAmerican Geophysical Union
dc.subject.enTUNISIA
dc.subject.enSEMIARID AREA
dc.title.enDissimilarity between dust, heat, and momentum turbulent transports during aeolian soil erosion
dc.typeArticle de revue
dc.identifier.doi10.1029/2018JD029048
dc.subject.halPlanète et Univers [physics]
dc.subject.halPlanète et Univers [physics]/Interfaces continentales, environnement
dc.subject.halPlanète et Univers [physics]/Océan, Atmosphère
dc.subject.halSciences de l'environnement
bordeaux.journalJournal of Geophysical Research: Atmospheres
bordeaux.page1064-1089
bordeaux.volume124
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue2
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02323409
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02323409v1
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