Critique of the tracer-tracer correlation technique and its potential to analyze polar ozone loss in chemistry-climate models
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-c...
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ftdlr:oai:elib.dlr.de:45622 2023-05-15T15:08:13+02:00 Critique of the tracer-tracer correlation technique and its potential to analyze polar ozone loss in chemistry-climate models Lemmen, Carsten Müller, Rolf Konopka, Paul Dameris, Martin 2006-10 http://elib.dlr.de/45622/ unknown Wiley Lemmen, Carsten und Müller, Rolf und Konopka, Paul und 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. Wiley. DOI:10.1029/2006JD007298 Dynamik der Atmosphäre Zeitschriftenbeitrag PeerReviewed 2006 ftdlr https://doi.org/10.1029/2006JD007298 2018-03-11T23:49:42Z 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. Other Non-Article Part of Journal/Newspaper Arctic German Aerospace Center: elib - DLR electronic library Arctic Journal of Geophysical Research 111 D18 |
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Open Polar |
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German Aerospace Center: elib - DLR electronic library |
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topic |
Dynamik der Atmosphäre |
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Dynamik der Atmosphäre Lemmen, Carsten Müller, Rolf Konopka, Paul Dameris, Martin Critique of the tracer-tracer correlation technique and its potential to analyze polar ozone loss in chemistry-climate models |
topic_facet |
Dynamik der Atmosphäre |
description |
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. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Lemmen, Carsten Müller, Rolf Konopka, Paul Dameris, Martin |
author_facet |
Lemmen, Carsten Müller, Rolf Konopka, Paul Dameris, Martin |
author_sort |
Lemmen, Carsten |
title |
Critique of the tracer-tracer correlation technique and its potential to analyze polar ozone loss in chemistry-climate models |
title_short |
Critique of the tracer-tracer correlation technique and its potential to analyze polar ozone loss in chemistry-climate models |
title_full |
Critique of the tracer-tracer correlation technique and its potential to analyze polar ozone loss in chemistry-climate models |
title_fullStr |
Critique of the tracer-tracer correlation technique and its potential to analyze polar ozone loss in chemistry-climate models |
title_full_unstemmed |
Critique of the tracer-tracer correlation technique and its potential to analyze polar ozone loss in chemistry-climate models |
title_sort |
critique of the tracer-tracer correlation technique and its potential to analyze polar ozone loss in chemistry-climate models |
publisher |
Wiley |
publishDate |
2006 |
url |
http://elib.dlr.de/45622/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
Lemmen, Carsten und Müller, Rolf und Konopka, Paul und 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. Wiley. DOI:10.1029/2006JD007298 |
op_doi |
https://doi.org/10.1029/2006JD007298 |
container_title |
Journal of Geophysical Research |
container_volume |
111 |
container_issue |
D18 |
_version_ |
1766339622716047360 |