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DOI: 10.5445/IR/1000045996
DOI: 10.5194/acp-14-9941-2014
Zitationen: 24
Web of Science
Zitationen: 21

How stratospheric are deep stratospheric intrusions?

Trickl, T.; Vogelmann, H.; Giehl, H.; Scheel, H.E.; Sprenger, M.; Stohl, A.

Preliminary attempts of quantifying the stratospheric ozone contribution in the observations at the Zugspitze summit (2962 m a.s.l.) next to Garmisch-Partenkirchen in the German Alps had yielded an approximate doubling of the stratospheric fraction of the Zugspitze ozone during the time period 1978 to 2004. These investigations had been based on data filtering by using low relative humidity (RH) and elevated 7Be as the criteria for selecting half-hour intervals of ozone data representative of stratospheric intrusion air. To quantify the residual stratospheric component in stratospherically influenced air masses, however, the mixing of tropospheric air into the stratospheric intrusion layers must be taken into account. In fact, the dewpoint mirror instrument at the Zugspitze summit station rarely registers RH values lower than 10% in stratospheric air intrusions. Since 2007 a programme of routine lidar sounding of ozone, water vapour and aerosol has been conducted in the Garmisch-Partenkirchen area. The lidar results demonstrate that the intrusion layers are drier by roughly one order of magnitude than indicated in the in situ measur ... mehr

Zugehörige Institution(en) am KIT Fakultät für Physik (PHYSIK)
Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Jahr 2014
Sprache Englisch
Identifikator ISSN: 1680-7316
URN: urn:nbn:de:swb:90-459966
KITopen ID: 1000045996
HGF-Programm 12.03.01; LK 01
Erschienen in Atmospheric Chemistry and Physics
Band 14
Heft 18
Seiten 9941-9961
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