Soil ozone deposition: Dependence of soil resistance to soil texture - Université Claude Bernard Lyon 1 Accéder directement au contenu
Article Dans Une Revue Atmospheric Environment Année : 2019

Soil ozone deposition: Dependence of soil resistance to soil texture

Eric Ceschia
Eric Lamaud
  • Fonction : Auteur
  • PersonId : 747191
  • IdHAL : eric-lamaud
Dominique Serça
  • Fonction : Auteur
  • PersonId : 857200

Résumé

Soil deposition is an essential pathway for tropospheric ozone (O3) removal, but its controlling factors remain unclear. Here, we explored the variability of soil O3 resistance in response to soil texture. To this aim, data of O3 deposition over bare soil obtained from micrometeorological measurements under contrasted meteorological conditions for five sites were used. The results obtained are twofold: (i) soil resistance (Rsoil) increased with soil surface relative humidity (RHsurf), but (ii) this relationship exhibited large site-by-site variability. Further analysis showed that the minimum soil resistance (corresponding to completely dry soil surface or RHsurf = 0%) and the increase of Rsoil with RHsurf are both linked to soil clay content. These results can be explained by (i) the soil surface available for O3 deposition at a microscopic scale which is a function of the soil specific surface area, and (ii) the capacity of a soil to adsorb water according to its clay content and therefore to reduce the surface active for O3 deposition. From these results, a new parameterization has been established to estimate Rsoil as a function of RHsurf and soil clay fraction.
Fichier principal
Vignette du fichier
Stella2018.pdf (476.46 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-01933639 , version 1 (09-08-2021)

Licence

Paternité

Identifiants

Citer

Patrick Stella, Benjamin Loubet, Christophe de Berranger, Xavier Charrier, Eric Ceschia, et al.. Soil ozone deposition: Dependence of soil resistance to soil texture. Atmospheric Environment, 2019, 199, pp.202-209. ⟨10.1016/j.atmosenv.2018.11.036⟩. ⟨hal-01933639⟩
237 Consultations
101 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More