Skip to Main content Skip to Navigation
Journal articles

Effects of a polydisperse cloud on tropospheric chemistry

Abstract : Effects of a polydisperse cloud on tropospheric chemistry have been studied in the framework of a two-dimensional model where dynamical, microphysical, and chemical processes are fully interactive. The chemical module describes the tropospheric photochemistry of ozone precursors in both gaseous and aqueous phases for a remote atmosphere. Impacts of the cloud polydisperse feature have been obtained by comparing the results in the case of a monodisperse cloud created under the same meteorological conditions. The [NO]/[NO•] ratio decreases more sharply in the case of the polydisperse cloud. The partitioning of ihe most soluble species does not follow the Henry's law equilibrium except in the middle of the cloud. This result has implications for airborne measurements made within clouds. Deviations from Henry's law found in samples are usually explained only by the effect of variations of the liquid water content with time, assuming that no real deviations exist in the real cloud. Here, it is shown that deviations from Henry's law equilibrium may exist even for clouds consisting of small droplets.
Complete list of metadata
Contributor : nadine chaumerliac Connect in order to contact the contributor
Submitted on : Saturday, February 6, 2021 - 7:29:11 AM
Last modification on : Tuesday, October 19, 2021 - 6:58:55 PM
Long-term archiving on: : Friday, May 7, 2021 - 6:04:07 PM


ark _67375_WNG-8C8WQ2LH-S.pdf
Publisher files allowed on an open archive




N. Audiffren, N. Chaumerliac, M. Renard. Effects of a polydisperse cloud on tropospheric chemistry. Journal of Geophysical Research: Atmospheres, American Geophysical Union, 1996, 101 (D20), pp.25949 - 25965. ⟨10.1029/96JD01548⟩. ⟨hal-01819424⟩



Record views


Files downloads