Free tropospheric and boundary-layer airborne measurements of ozone over the latitude range of 58 degrees S to 70 degrees N

Journal Article · Tue Jan 01 04:00:00 EST 1980 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JC085iC12p07307· OSTI ID:5548717

Routhier, F; Dennett, R; Davis, D D; Wartburg, A; Haagenson, P; Dela Y, A C

Reported here are O/sub 3/ data recorded during the 1977 and 1978 gametag (global atmospheric measurements experiment on tropospheric aerosols and gases) field experiments. Nearly two thirds of these data were recorded in the free troposphere over the altitude range of 5 to 6.5 km. The remaining one third were collected in the atmospheric boundary layer, typically 0.3 to 1 km above the surface terrain. The latitude range covered by these measurements was 58 degrees S to 70 degrees N and involved flight operations over northern Canada, Alaska, the Southeastern/Central Pacific (northern hemisphere), and the central/western pacific in the southern hemisphere. Key observations include systematically higher average free tropospheric O/sub 3/ levels in the northern versus southern hemisphere with the global minimum in ozone occurring at tropical latitudes; extensive O/sub 3/ layering within the free troposphere over large geographical areas of the northern hemisphere and, to a much lesser extent, remote areas of the southern hemisphere; boundary-layer O/sub 3/ concentration levels which were consistently lower than free tropospheric O/sub 3/ levels in remote areas of the northern hemisphere but only slightly lower than those levels observed in the southern hemisphere; and the finding in April/May 1978 of latitudinal zone, 13 degrees S to 2 degrees n, virtually devoid of boundary layer O/sub 3/. A comparison of these data with those of other investigators, together with a discussion of the relevancy of these observations to our present understanding of the tropospheric O/sub 3/ budget, is presented.

• OSTI ID: 5548717
• Journal Information: J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 85:C12; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
EARTH ATMOSPHERE
ECOLOGICAL CONCENTRATION
LAYERS
OZONE
OZONE LAYER
TROPOSPHERE