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Towards a scale-consistent lightning NOx source parameterisation in the MECO(n) model system

Jöckel, Patrick and Mertens, Mariano and Grewe, Volker and Matthes, Sigrun and Kerkweg, Astrid and El Hosni, Mohamed Riadh and Huntrieser, Heidi (2014) Towards a scale-consistent lightning NOx source parameterisation in the MECO(n) model system. COSMO / CLM / ART User Seminar 2014, 17-19 Mar 2014, Offenbach, Germany. (Unpublished)

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Abstract

Lightning flashes represent an important source of nitrous oxide (NOx) in the troposphere and therefore influence directly the tropospheric ozone chemistry. The occurrence of ligthning is closely related to strong convective events. In global and limited area models which do not resolve clouds and convection, the phenomenon therefore represents a sub-grid-scale process and needs to be parameterised accordingly. Several lightning NOx parameterisations exist based on different convective parameters such as updraft mass flux, convective cloud top height or convective precipitation. The MECO(n) (MESSy-fied ECHAM and COSMO models nested n-times) model system aims at the consistent description of atmospheric chemistry related processes on the global (ECHAM) and the regional (COSMO) scales by on-line nesting of one or more instances of the limited area COSMO model into the global ECHAM model for dynamical and chemical down-scaling. Thus, a scale-consistent representation of the lightning NOx source is required. We adapt the MESSy submodel LNOx which includes currently 4 different ligthning NOx source parameterisations to work consistently in both, the global and the regional models and compare the simulated flash frequencies with observations.

Item URL in elib:https://elib.dlr.de/88577/
Document Type:Conference or Workshop Item (Speech)
Title:Towards a scale-consistent lightning NOx source parameterisation in the MECO(n) model system
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Jöckel, PatrickDLR, IPAUNSPECIFIED
Mertens, MarianoDLR, IPAUNSPECIFIED
Grewe, VolkerDLR, IPAUNSPECIFIED
Matthes, SigrunDLR, IPAUNSPECIFIED
Kerkweg, Astridkerkweg (at) uni-mainz.deUNSPECIFIED
El Hosni, Mohamed RiadhDLR, IPAUNSPECIFIED
Huntrieser, HeidiDLR, IPAUNSPECIFIED
Date:March 2014
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Unpublished
Keywords:global modelling, regional modelling, lightning, NOx, nitrous oxide, flash frequency
Event Title:COSMO / CLM / ART User Seminar 2014
Event Location:Offenbach, Germany
Event Type:Workshop
Event Dates:17-19 Mar 2014
Organizer:Deutscher Wetterdienst (DWD, German Weather Service)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Atmosphären- und Klimaforschung
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics
Institute of Atmospheric Physics > Atmospheric Trace Species
Institute of Atmospheric Physics > Atmospheric Dynamics
Deposited By: Jöckel, Dr. Patrick
Deposited On:21 Mar 2014 14:25
Last Modified:31 Jul 2019 19:45

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