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Critique of the tracer-tracer correlation technique and its potential to analyze polar ozone loss in chemistry-climate models

Lemmen, Carsten and Müller, Rolf and Konopka, Paul and Dameris, Martin (2006) Critique of the tracer-tracer correlation technique and its potential to analyze polar ozone loss in chemistry-climate models. Journal of Geophysical Research, 111, D18307. DOI: 10.1029/2006JD007298.

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Abstract

The tracer-tracer correlation technique (TRAC) has been widely employed to infer chemical ozone loss from observations. Yet, its applicability to chemistry-climate model (CCM) data is disputed. Here, we report the successful application of TRAC on the results of a CCM simulation. By comparing TRAC-calculated ozone loss to ozone loss derived with the passive ozone method in a chemistry transport model we differentiate effects of internal mixing and cross vortex boundary mixing on a TRAC reference correlation. As a test case, we consider results of a cold Arctic winter/spring episode from an E39/C experiment, where typical features, for example, sufficient polar stratospheric cloud formation potential, denitrification and dehydration, and intermittent and final stratospheric warming events, are simulated. We find that internal mixing does not impact the TRAC-derived reference correlation at all. Mixing across the vortex boundary would lead to an underestimation of ozone loss by ∼10% when calculated with TRAC. We provide arguments that TRAC is a consistent and conservative method to derive chemical ozone loss and can be used to extract its chemical signature also from CCM simulations. As a consequence, we will be able to provide a lower bound for chemical ozone loss for model simulations where a passive ozone tracer is not available.

Document Type:Article
Title:Critique of the tracer-tracer correlation technique and its potential to analyze polar ozone loss in chemistry-climate models
Authors:
AuthorsInstitution or Email of Authors
Lemmen, CarstenFZ Jülich, Jülich
Müller, RolfFZ Jülich, Jülich
Konopka, PaulFZ Jülich, Jülich
Dameris, MartinUNSPECIFIED
Date:October 2006
Journal or Publication Title:Journal of Geophysical Research
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:111
DOI:10.1029/2006JD007298
Page Range:D18307
Status:Published
Keywords:Stratosphäre, Ozon, numerische Modellierung
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Atmosphären- und Klimaforschung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Dynamics
Deposited By: Prof. Dr. rer. nat. Martin Dameris
Deposited On:31 Jul 2007
Last Modified:27 Apr 2009 13:15

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