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www.atmos-chem-phys-discuss.net/9/3113/2009/
doi:10.5194/acpd-9-3113-2009
© Author(s) 2009. This work is distributed
under the Creative Commons Attribution 3.0 License.
High-ozone layers in the middle and upper troposphere above Central Europe: strong import from the stratosphere over the Pacific Ocean
1Forschungszentrum Karlsruhe, Institut für Meteorologie und Klimaforschung (IMK-IFU), Kreuzeckbahnstr. 19, 82467 Garmisch-Partenkirchen, Germany
2Paul Scherrer Institut, Labor für Atmosphärenchemie, 5232 Villigen PSI, Switzerland
3Lehrstuhl für Ökoklimatologie, Technische Universität München, Am Hochanger 13, 85354 Freising-Weihenstephan, Germany
*now at: Norwegian Institute for Air Research, P.O. Box 100, Instituttveien 18, 2027 Kjeller, Norway
Abstract. Very dry high-ozone layers have been repeatedly observed with the ozone lidar in Garmisch-Partenkirchen (Germany) starting one or two days after the onset of high-pressure periods during the warm season. These episodes have been analysed by trajectory calculations and extended simulations with the FLEXPART particle dispersion model. Mixed contributions from the stratosphere over the Pacific Ocean and the boundary layers of East Asia and North America were found. The stratospheric influence is mostly dominating and caused by a rather shallow transfer from the stratosphere into these rapid upper- and mid-tropospheric air streams. The considerable vertical extent of these layers and peak ozone mixing ratios between 80 and 150 ppb suggest an important mechanism for stratosphere-to-troposphere transport.
Discussion Paper (PDF, 2888 KB) Interactive Discussion (Closed, 3 Comments) Publication in ACP not foreseen
Citation: Trickl, T., Bärtsch-Ritter, N., Eisele, H., Furger, M., Mücke, R., and Stohl, A.: High-ozone layers in the middle and upper troposphere above Central Europe: strong import from the stratosphere over the Pacific Ocean, Atmos. Chem. Phys. Discuss., 9, 3113-3166, doi:10.5194/acpd-9-3113-2009, 2009. Bibtex EndNote Reference Manager XML
