The impact of free convection on late morning ozone decreases on an Alpine foreland mountain summit
Item
Title (Dublin Core)
The impact of free convection on late morning ozone decreases on an Alpine foreland mountain summit
Description (Dublin Core)
Exceptional patterns in the diurnal course of ozone mixing ratio at a mountain top site (998 m a.s.l.) were observed during a field experiment (September 2005). They manifested themselves as strong and sudden decreases of ozone mixing ratio with a subsequent return to previous levels. The evaluation of corresponding long-term time series (2000–2005) revealed that such events occur mainly during summer, and affect the mountain top site on 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 be attributed to free convection. The free convection was triggered by a rather frequently occurring wind speed minimum around the location of the mountain.
Creator (Dublin Core)
Mayer, J.-C.
Staudt, K.
Gilge, S.
Meixner, F. X.
Foken, T.
Date (Dublin Core)
2018-01-15
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-8-5941-2008
https://acp.copernicus.org/articles/8/5941/2008/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
