Match observations in the Arctic winter 1996/97: High stratospheric ozone loss rates correlate with low temperatures deep inside the polar vortex

A. Schulz 1 M. Rex 1 J. Steger 1 N. R. P. Harris 2 G. Braathen 3 E. Reimer 4 R. Alfier 4 A. Beck 4 M. Alpers 5 J. Cisneros 6 H. Claude 7 H. De Backer 8 H. Dier 9 V. Dorokhov 10 Hans Fast 11 Sophie Godin 12 G. Hansen 3 H. Kanzawa 13 Bogumil Kois 14 Y. Kondo 15 E. Kosmidis 16 E. Kyrö 17 Z. Litynska 14 M. J. Molyneux 18 G. Murphy 19 H. Nakane 13 C. Parrondo 20 F. Ravegnani 21 C. Varotsos 22 C. Vialle 12 P. Viatte 23 V. Yushkov 10 C. Zerefos 24 Peter Von Der Gathen 1
Abstract : With the Match technique, which is based on the coordinated release of ozonesondes, chemical ozone loss rates in the Arctic stratospheric vortex in early 1997 have been quantified in a vertical region between 400 K and 550 K. Ozone destruction was observed from mid February to mid March in most of these levels, with maximum loss rates between 25 and 45 ppbv/day. The vortex averaged loss rates and the accumulated vertically integrated ozone loss have been smaller than in the previous two winters, indicating that the record low ozone columns observed in spring 1997 were partly caused by dynamical effects. The observed ozone loss is inhomogeneous through the vortex with the highest loss rates located in the vortex centre, coinciding with the lowest temperatures. Here the loss rates per sunlit hour reached 6 ppbv/h, while the corresponding vortex averaged rates did not exceed 3.9 ppbv/h.
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Geophysical Research Letters, American Geophysical Union, 2000, 27 (2), pp.205-208. 〈10.1029/1999GL010811〉
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A. Schulz, M. Rex, J. Steger, N. R. P. Harris, G. Braathen, et al.. Match observations in the Arctic winter 1996/97: High stratospheric ozone loss rates correlate with low temperatures deep inside the polar vortex. Geophysical Research Letters, American Geophysical Union, 2000, 27 (2), pp.205-208. 〈10.1029/1999GL010811〉. 〈insu-01633514〉

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