Ozone mini-hole observation over the Balkan Peninsula in March 2005 (Articolo in rivista)

Type
Label
  • Ozone mini-hole observation over the Balkan Peninsula in March 2005 (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Alternative label
  • Werner, R., D. Valev, At. Atanassov, I. Kostadinov, B. Petkov, G. Giovanelli, K. Stebel, A. Petritoli, E. Palazzi, M. Gausa, T. Markova (2009)
    Ozone mini-hole observation over the Balkan Peninsula in March 2005
    in Advances in space research
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Werner, R., D. Valev, At. Atanassov, I. Kostadinov, B. Petkov, G. Giovanelli, K. Stebel, A. Petritoli, E. Palazzi, M. Gausa, T. Markova (literal)
Pagina inizio
  • 195 (literal)
Pagina fine
  • 200 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 43 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Solar-Terrestrial Influences Laboratory, Stara Zagora Department, BAS, 6000 Stara Zagora, P.O. Box 73, Bulgaria Norwegian Institute of Air Research, 2027 Kjeller, P.O. Box 100, Norway Andøya Rocket Range, ALOMAR, N-8483 Andenes, Norway (literal)
Titolo
  • Ozone mini-hole observation over the Balkan Peninsula in March 2005 (literal)
Abstract
  • Areas with dimensions of 1000–3000 km in which the total ozone content (TOC) decreases fast are called ozone mini-holes. They are generated mainly dynamically in two ways, either by poor-ozone air mass transport from the tropics to higher latitudes by planetary wave activity or, they are connected with strong adiabatic uplifting of the tropopause height. An ozone mini-hole, generated by the second mechanism, was observed over the Balkan Peninsula on 19/21 March 2005. In the middle of March, the polar vortex was strongly disturbed by Rossby waves, reaching up to the lower stratosphere. Warming episodes over a geographical area, covering the Barents Sea and the Polar Sea north from Central Siberia, displaced a polar vortex fragment extremely southwards. However, the vorticity was weak and the stratospheric temperatures did not reach low values, providing conditions for ozone chemical destruction via heterogenic reactions. At the same time, a Rossby wave ridge was located below the European polar fragment. In the period from 13 to 19 March, the thermal tropopause over Sofia was uplifted almost by 3 km. Ozone distributions observed by the SCIAMACHY instrument on 18–21 March show a fast TOC decrease westwards from Ireland, which was moving eastwards during the next days, increasing the area in which the ozone content decreased. On 20/21 March low ozone content was observed above the Stara Zagora (42°N, 25°E) ground-based station by means of the GASCOD instrument, using DOAS technique. The TOMS Earth probe instrument detected 237 DU over Sofia. This is a record low March value from the beginning of the TOMS instrument measurements in 1978. In March/April the ozone distribution was characterized by its mean annual maximum of 360 DU at 42°N. Using the TUV model, the UV-index was calculated for regions of 2000 m height, typical for the mountains southwards of Sofia. The UV-index was very high (almost 10). This is a result not only of the low TOC but also of the relatively high zenith angle at middle latitudes in March. (literal)
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