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In situ measurements of stratospheric ozone depletion rates in the Arctic winter 1991/1992 : A Lagrangian approach

Rex, M. ; Von Der Gathen, P. ; Harris, N. R.P. ; Lucic, D. ; Knudsen, B. M. ; Braathen, G. O. ; Reid, S. J. ; De Backer, H. ; Claude, H. and Fabian, R. , et al. (1998) In Journal of Geophysical Research Atmospheres 103(D5). p.5843-5853
Abstract

A Lagrangian approach has been used to assess the degree of chemically induced ozone loss in the Arctic lower stratosphere in winter 1991/1992. Trajectory calculations are used to identify air parcels probed by two ozonesondes at different points along the trajectories. A statistical analysis of the measured differences in ozone mixing ratio and the time the air parcel spent in sunlight between the measurements provides the chemical ozone loss. Initial results were first described by von der Gathen et al. [1995]. Here we present a more detailed description of the technique and a more comprehensive discussion of the results. Ozone loss rates of up to 10 ppbv per sunlit hour (or 54 ppbv per day) were found inside the polar vortex on the... (More)

A Lagrangian approach has been used to assess the degree of chemically induced ozone loss in the Arctic lower stratosphere in winter 1991/1992. Trajectory calculations are used to identify air parcels probed by two ozonesondes at different points along the trajectories. A statistical analysis of the measured differences in ozone mixing ratio and the time the air parcel spent in sunlight between the measurements provides the chemical ozone loss. Initial results were first described by von der Gathen et al. [1995]. Here we present a more detailed description of the technique and a more comprehensive discussion of the results. Ozone loss rates of up to 10 ppbv per sunlit hour (or 54 ppbv per day) were found inside the polar vortex on the 475 K potential temperature surface (about 19.5 km in altitude) at the end of January. The period of rapid ozone loss coincides and slightly lags a period when temperatures were cold enough for type I polar stratospheric clouds to form. It is shown that the ozone loss occurs exclusively during the sunlit portions of the trajectories. The time evolution and vertical distribution of the ozone loss rates are discussed.

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publishing date
type
Contribution to journal
publication status
published
in
Journal of Geophysical Research Atmospheres
volume
103
issue
D5
pages
11 pages
publisher
Wiley-Blackwell
external identifiers
  • scopus:1542709866
ISSN
0148-0227
DOI
10.1029/97JD03127
language
English
LU publication?
no
id
5e69ed68-d96d-4635-b376-22be9015a26a
date added to LUP
2025-09-30 18:53:58
date last changed
2025-10-14 10:34:14
@article{5e69ed68-d96d-4635-b376-22be9015a26a,
  abstract     = {{<p>A Lagrangian approach has been used to assess the degree of chemically induced ozone loss in the Arctic lower stratosphere in winter 1991/1992. Trajectory calculations are used to identify air parcels probed by two ozonesondes at different points along the trajectories. A statistical analysis of the measured differences in ozone mixing ratio and the time the air parcel spent in sunlight between the measurements provides the chemical ozone loss. Initial results were first described by von der Gathen et al. [1995]. Here we present a more detailed description of the technique and a more comprehensive discussion of the results. Ozone loss rates of up to 10 ppbv per sunlit hour (or 54 ppbv per day) were found inside the polar vortex on the 475 K potential temperature surface (about 19.5 km in altitude) at the end of January. The period of rapid ozone loss coincides and slightly lags a period when temperatures were cold enough for type I polar stratospheric clouds to form. It is shown that the ozone loss occurs exclusively during the sunlit portions of the trajectories. The time evolution and vertical distribution of the ozone loss rates are discussed.</p>}},
  author       = {{Rex, M. and Von Der Gathen, P. and Harris, N. R.P. and Lucic, D. and Knudsen, B. M. and Braathen, G. O. and Reid, S. J. and De Backer, H. and Claude, H. and Fabian, R. and Fast, H. and Gil, M. and Kyrö, E. and Mikkelsen, I. S. and Rummukainen, M. and Smit, H. G. and Stähelin, J. and Varotsos, C. and Zaitcev, I.}},
  issn         = {{0148-0227}},
  language     = {{eng}},
  month        = {{03}},
  number       = {{D5}},
  pages        = {{5843--5853}},
  publisher    = {{Wiley-Blackwell}},
  series       = {{Journal of Geophysical Research Atmospheres}},
  title        = {{In situ measurements of stratospheric ozone depletion rates in the Arctic winter 1991/1992 : A Lagrangian approach}},
  url          = {{http://dx.doi.org/10.1029/97JD03127}},
  doi          = {{10.1029/97JD03127}},
  volume       = {{103}},
  year         = {{1998}},
}