Ozone measurements in the European Arctic during the ARCTOC 1995 campaign

H. Lorenzen-Schmidt; S. Wessel; W. Unold; S. Solberg; H. Gernandt; F. Stordal; U. Platt

doi:10.3402/tellusb.v50i5.16220

Ozone measurements in the European Arctic during the ARCTOC 1995 campaign

Tellus B: Chemical and Physical Meteorology

Volume 50 (1998): Issue 5

By: H. Lorenzen-Schmidt, S. Wessel, W. Unold, S. Solberg, H. Gernandt, F. Stordal and U. Platt

Open Access

|Jan 1998

Abstract

During the first ARCTOC campaign in 1995, ozone was measured continuously at 2 altitudes (40 m asl and 474 m asl) near Ny-Ålesund (Kongsfjord), Svalbard, Norway from 17 April to 8 June. In addition, vertical profiles of ozone and temperature were recorded with balloon sondes at selected dates. A triple event of sudden boundary layer ozone loss (leading to O₃ < 5 ppb) was observed at the beginning of the campaign. The height of the ozone depleted layer ranged from the surface up to 1300m. Additional spectroscopic long-path (DOAS) measurements show a close agreement with the point measurements indicating a well mixed airmass throughout the measurement area. The rate of ozone decrease (dO₃/dt) is considerably higher (on average twice as high) than the subsequent ozone recovery rate. While ozone levels at 40 m and 474 m asl were closely correlated in general, the recovery of ozone after the depletion started 4–6 h earlier at 474 m asl. Reductions in ozone were accompanied by a reduction in stability of the vertical stratification.

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DOI: https://doi.org/10.3402/tellusb.v50i5.16220 | Journal eISSN: 1600-0889

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Language: English

Page range: 416 - 429

Submitted on: Nov 4, 1996

Accepted on: Jul 14, 1998

Published on: Jan 1, 1998

Published by: Stockholm University Press

In partnership with: Paradigm Publishing Services

© 1998 H. Lorenzen-Schmidt, S. Wessel, W. Unold, S. Solberg, H. Gernandt, F. Stordal, U. Platt, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 50 (1998): Issue 5