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A low latitude stratospheric intrusion associated with a cut‐off low
Author(s) -
Kentarchos Anastasios S.,
Davies Trevor D.,
Zerefos Christos S.
Publication year - 1998
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/97gl03351
Subject(s) - troposphere , potential vorticity , intrusion , stratosphere , atmospheric sciences , climatology , ozone layer , vorticity , environmental science , middle latitudes , latitude , excursion , ozone , meteorology , geology , geography , geodesy , vortex , political science , law , geochemistry
An ozonesonde released from Thessaloniki, Greece (40°N, 23°E) in March 1995 indicated a pronounced stratospheric intrusion into the troposphere. This study represents the first identification and analysis of such an event in southeastern Europe. Total ozone data and potential vorticity values of >6 pvu on the 315 K isentrope over Greece supported a low‐level southwards excursion of stratospheric air. The event was associated with the evolution of a cut‐off low over the Balkans. Confirmation is achieved through potential vorticity and specific humidity fields, as well as METEOSAT‐5 images.