Abstract
Different higher-order flux closures are compared for two chemistry cases using a large eddy simulation (LES) model for the convective atmospheric boundary layer. Both a simple chemistry case and a photochemistry case more representative for atmospheric chemistry are studied. The turbulent vertical fluxes are decomposed into two parts, one independent and the other dependent of chemical higher-order moments. The LES results are used to determine the contribution of chemical higher-order moments to the flux for the higher-order closures. It is found that this contribution is sensitive to the closure assumptions. However, it is expected that the differences between different closures will be small in realistic applications. Therefore it is concluded that first-order closure suffices for large-scale atmospheric chemistry models to model the turbulent vertical flux of reactive species in the atmospheric boundary layer.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
