Stratosphere-troposphere exchanges: case studies recorded at Mt. Cimone during VOTALP project |
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| Affiliation: | 1. National Research Council, FISBAT Institute, Bologna, Italy;2. EURAD-Project, Institute for Geophysics and Meteorology, University of Cologne, D-50931 Cologne, Germany;3. Lehrstuhl fur Bioklimatologie and Immissionsforschung, University of Munich, 85354 Freising, Germany;4. Environmental Radiochemistry Laboratory, Dept. Of Chemistry of Bologna University, Bologna, Italy;5. Institute of Meteorology and Physics, University of Agricultural Sciences, A-1180, Vienna, Austria;6. Italian Air Force Meteorological Service, Sestola (Modena), Italy;2. Division of Cardiology, Eulji University Hospital, Eulji University School of Medicine, Daejeon, Republic of Korea;3. Miami Cardiac and Vascular Institute, Miami, Florida;4. Aventura Hospital and Medical Center, Aventura, Florida;1. Environmental Radioactivity Laboratory, Bucharest-Afumati, 72400, Romania;2. Faculty of Physics, University of Bucharest, Strada, Atomiștilor 405, Magurele, 077125, Romania;3. Extreme Light Infrastructure - Nuclear Physics, IFIN-HH, 30 Atomistilor Str, Bucharest-Magurele, Romania;1. National Research Center for Geo-analysis, Beijing 100037, China;2. College of Environmental Sciences, Qingdao University, Qingdao 266071, China;3. Chinese Academy of Agriculture Sciences, Beijing 100081, China |
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| Abstract: | In order to point out and study transports of ozone rich air masses in the lower troposphere from the stratosphere/upper troposphere, continuous measurements of several parameters have been undertaken at Mt. Cimone during the European Community VOTALP project (Vertical Ozone Transport in the Alps). Several high values of surface ozone concentration due to vertical stratospheric-tropospheric exchanges have been recorded in the four mountain peak stations involved in this project (Jungfraujoch, Sonnblick, Zugspitze and Mt. Cimone) in 1996–1997. This paper presents and analyses data concerning the Mt. Cimone ground-based station, which is the highest peak of the Italian Northern Apennines and the most representative WMO-GAW site in Italy. Episodes of vertical exchange in the lower stratosphere, as tropopause folding, or in the upper troposphere, as down draft transport, have been registered at Mt. Cimone since March 1996 and subsequently studied. In fact, the comparison between the behaviours of different background trace gases at a mountain baseline station, the weather situations and the backward trajectory analyses can bring to light these events and be very useful for a better knowledge of transport phenomena. Correlation between high level of ozone concentration, chemical and meteorological parameters and three-dimensional backward trajectories relative to two particular events are herein presented. |
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