elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Kontakt | English
Schriftgröße: [-] Text [+]

Impact of uncertainties in atmospheric mixing on simulated UTLS composition and related radiative effects

Riese, Martin und Ploeger, F. und Rap, A. und Vogel, B. und Konopka, P. und Dameris, Martin und Forster, P. (2012) Impact of uncertainties in atmospheric mixing on simulated UTLS composition and related radiative effects. Journal of Geophysical Research, 117 (D16305), Seiten 1-10. DOI: 10.1029/2012JD017751.

[img]
Vorschau
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
4MB

Offizielle URL: http://www.agu.org/journals/jd/jd1216/2012JD017751/2012JD017751.pdf

Kurzfassung

The upper troposphere/lower stratosphere (UTLS) region plays an important role in the climate system. Changes in the structure and chemical composition of this region result in particularly large changes in radiative forcings of the atmosphere. Quantifying the processes that control UTLS composition (e.g., stratosphere-troposphere exchange) therefore represents a crucial task. We assess the influence of uncertainties in the atmospheric mixing strength on global UTLS distributions of greenhouse gases (water vapor, ozone, methane, and nitrous oxide) and associated radiative effects. The study is based on multiannual simulations with the Chemical Lagrangian Model of the Stratosphere (CLaMS) driven by ERA-Interim meteorological data and on a state-of-the-art radiance code. Mixing, the irreversible part of transport, is controlled by the local horizontal strain and vertical shear of the atmospheric flow. We find that simulated radiative effects of water vapor and ozone, both characterized by steep gradients in the UTLS, are particularly sensitive to uncertainties of the atmospheric mixing strength. Globally averaged radiative effects are about 0.72 and 0.17 W/m2 for water vapor and ozone, respectively. For ozone, the largest impact of mixing uncertainties is observed in the extra-tropical lower stratosphere.

Dokumentart:Zeitschriftenbeitrag
Titel:Impact of uncertainties in atmospheric mixing on simulated UTLS composition and related radiative effects
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Riese, MartinFZ Jülich
Ploeger, F.FZ Jülich
Rap, A.Uni Leeds
Vogel, B.FZ Jülich
Konopka, P.FZ Jülich
Dameris, MartinDLR-IPA
Forster, P.Uni Leeds
Datum:2012
Erschienen in:Journal of Geophysical Research
Referierte Publikation:Ja
In Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:117
DOI :10.1029/2012JD017751
Seitenbereich:Seiten 1-10
Status:veröffentlicht
Stichwörter:numerical modelling, stratosphere, troposphere
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Vorhaben Atmosphären- und Klimaforschung
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre > Dynamik der Atmosphäre
Hinterlegt von: Prof. Dr. rer. nat. Martin Dameris
Hinterlegt am:09 Okt 2012 12:05
Letzte Änderung:23 Jan 2014 11:36

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Copyright © 2008-2013 Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.