Physics
Scientific paper
Apr 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998georl..25.1173d&link_type=abstract
Geophysical Research Letters, Volume 25, Issue 8, p. 1173-1176
Physics
8
Atmospheric Composition And Structure: Pollution-Urban And Regional, Atmospheric Composition And Structure: Troposphere-Constituent Transport And Chemistry, Atmospheric Composition And Structure: Constituent Sources And Sinks
Scientific paper
Measurements by an ECC ozonesonde launched from Aberystwyth (52.4°N, -4.1°E) in July show ozone concentrations decreasing steadily from a warm frontal surface to the tropopause, cumulating in a layer ~0.5 km deep with near-zero ozone concentrations at 12 km. Such features have previously been detected by lidar but have not been reported in ozonesonde data at mid-latitudes; they have, however, been found in ozonesonde profiles above the equatorial Pacific. We examine three possible hypotheses for the origin of the ozone-free air: in situ destruction by cirrus clouds, rapid transport from the marine boundary layer in the extratropics and long-range transport from the tropics. We conclude that the ozone-poor air observed on this day could only have resulted from long-range transport from the tropics.
Davies W. E.
O'Connor Fiona M.
Vaughan Geraint
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