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On the attribution of contributions of atmospheric trace gases to emissions in atmospheric model applications

Grewe, Volker und Eleni, Tsati und Hoor, Peter (2010) On the attribution of contributions of atmospheric trace gases to emissions in atmospheric model applications. Geoscientific Model Development, 3, Seiten 487-499. Copernicus Publcations. DOI: 10.5194/gmd-3-487-2010

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Offizielle URL: http://www.geosci-model-dev.net/3/487/2010/


We present an improved tagging method, which describes the combined effect of emissions of various species from individual emission categories, e.g. the impact of both, nitrogen oxides and non-methane hydrocarbon emissions on ozone. This method is applied to two simplified chemistry schemes, which represent the main characteristics of atmospheric ozone chemistry. Analytical solutions are presented for this tagging approach. In the past, besides tagging approaches, sensitivity methods were used, which estimate the contributions from individual sources based on differences in two simulations, a base case and a simulation with a perturbation in the respective emission category. We apply both methods to our simplified chemical systems and demonstrate that potentially large errors (factor of 2) occur with the sensitivity method, which depend on the degree of linearity of the chemical system. This error depends on two factors, the ability to linearise the chemical system around a base case, and second the completeness of the contributions, which means that all contributions should principally add up to 100%. For some chemical regimes the first error can be minimised by employing only small perturbations of the respective emission, e.g. 5%. The second factor depends on the chemical regime and cannot be minimized by a specific experimental set-up. It is inherent to the sensitivity method. Since a complete tagging algorithm for global chemistry models is difficult to achieve, we present two error metrics, which can be applied for sensitivity methods in order to estimate the potential error of this approach for a specific application.

Titel:On the attribution of contributions of atmospheric trace gases to emissions in atmospheric model applications
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iD
Grewe, Volkervolker.grewe@dlr.deNICHT SPEZIFIZIERT
Hoor, PeterUniv. Mainz, MainzNICHT SPEZIFIZIERT
Datum:12 Oktober 2010
Erschienen in:Geoscientific Model Development
Referierte Publikation:Ja
In Open Access:Ja
In ISI Web of Science:Ja
DOI :10.5194/gmd-3-487-2010
Seitenbereich:Seiten 487-499
Verlag:Copernicus Publcations
Stichwörter:Tagging, Chemistry, ozone, NMHC, VOC, NOy emissions
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Verkehr
HGF - Programmthema:Verkehrssystem
DLR - Schwerpunkt:Verkehr
DLR - Forschungsgebiet:V VS - Verkehrssystem
DLR - Teilgebiet (Projekt, Vorhaben):V - Umweltwirkungen des Verkehrs (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre > Dynamik der Atmosphäre
Hinterlegt von: Grewe, Prof. Dr. Volker
Hinterlegt am:13 Okt 2010 16:21
Letzte Änderung:08 Mär 2018 18:29

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