DUPONT, Sylvain; RAJOT, J.‐l.; LAMAUD, Eric; BERGAMETTI, G.; LABIADH, M.; KHALFALLAH, B.; BOUET, C.; MARTICORENA, B.; FERNANDES, R.

doi:10.1029/2021JD034735

Metadatos

Licencia de uso del documento

DUPONT, Sylvain
Interactions Sol Plante Atmosphère [UMR ISPA]

RAJOT, J.‐l.
Institut d'écologie et des sciences de l'environnement de Paris [iEES Paris]
Laboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]

LAMAUD, Eric
Interactions Sol Plante Atmosphère [UMR ISPA]

Idioma

Article de revue

Este ítem está publicado en

Journal of Geophysical Research: Atmospheres. 2021-07-16, vol. 126, n° 13, p. 1-27

American Geophysical Union

Resumen en inglés

Estimating accurately dust emission flux during aeolian erosion events is crucial for quantifying the amount of dust in the atmosphere. The rare existing field experiments quantifying such flux were mainly performed using the flux-gradient (FG) method. Here, we present the first intercomparison of the size-resolved dust fluxes estimated by both the FG and the eddy-covariance (EC) methods during several erosion events. Both methods were applied simultaneously 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. Overall, both methods predict similar dust fluxes for particle smaller than about 4 μm. For coarser particles, the EC method predicts a smaller dust flux than the FG method. Factors explaining this difference are discussed such as the different sampling heads used by the dust particle counters of both methods, or the possible weakening of the constant dust flux layer at the location of the upper dust particle counter of the FG method. This intercomparison highlights the difficulties and advantages of each method as well as their complementarity.< Leer menos

Palabras clave en inglés

flux-gradient

wind erosion

dust flux

eddy-covariance

URI

https://oskar-bordeaux.fr/handle/20.500.12278/195243

DOI

http://dx.doi.org/10.1029/2021JD034735

Proyecto ANR

Erosion éolienne en présence de végétation éparse - ANR-15-CE02-0013

Orígen

Importado de Hal

Centros de investigación

Interactions Soil Plant Atmosphere (ISPA) - UMR 1391