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The impact of free convection on late morning ozone decreases on an Alpine foreland mountain summit

Title data

Mayer, Jens-Christopher ; Staudt, Katharina ; Gilge, S. ; Meixner, Franz X. ; Foken, Thomas:
The impact of free convection on late morning ozone decreases on an Alpine foreland mountain summit.
In: Atmospheric Chemistry and Physics Discussions. Vol. 8 (March 2008) Issue 2 . - pp. 5437-5476.
ISSN 1680-7375
DOI: https://doi.org/10.5194/acpd-8-5437-2008

Abstract in another language

Exceptional patterns in the diurnal course of ozone mixing ratio at a mountain top site (998m a.s.l.) were observed during a field experiment (September 2005). They manifested themselves as strong and sudden decreases of ozone mixing ratio levels with a subsequent return to revious levels. Considering corresponding long-term time series (2000–2005) it was found, that such events occur mainly during summer, and affect the mountain top site in about 18% of the summer days. Combining (a) surface layer measurements at mountain summit and at the foot of the mountain, (b) in-situ (tethered balloon) and remote sensing (SODAR-RASS) measurements within the atmospheric boundary layer, the origin of these events of sudden ozone decrease could mospheric be attributed to free convection, triggered by a rather frequently occurring wind speed minimum around the location of the mountain.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER58850
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Former Professors > Professor Micrometeorology - Univ.-Prof. Dr. Thomas Foken
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Former Professors
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 31 Aug 2015 05:50
Last Modified: 31 Aug 2015 05:50
URI: https://eref.uni-bayreuth.de/id/eprint/18856