An optimisation method to improve modelling of wet deposition in atmospheric transport models: applied to FLEXPART v10.4

Stijn Van Leuven, Pieter De Meutter, Johan Camps, Piet Termonia, Andy Delcloo

    Research outputpeer-review

    Abstract

    Wet deposition plays a crucial role in the removal of aerosols from the atmosphere. Yet, large uncertainties remain in its implementation in atmospheric transport models, specifically in the parameterisation schemes that are often used. Recently, a new wet deposition scheme was introduced in FLEXPART. The input parameters for its wet deposition scheme can be
    altered by the user, and may be case-specific. In this paper, a new method is presented to optimise the wet scavenging rates in 5 atmospheric transport models such as FLEXPART. The optimisation scheme is tested in a case study of aerosol-attached 137Cs following the Fukushima Daiichi nuclear power plant accident. From this, improved values for the wet scavenging input parameters in FLEXPART are suggested.
    Original languageEnglish
    Pages (from-to)5323-5338
    Number of pages27
    JournalGeoscientific Model Development
    Volume16
    DOIs
    StatePublished - 19 Sep 2023

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