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

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 t...

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Detalhes bibliográficos
Autores: Schulz, Astrid, Rex, Markus, Steger, J., Harris, Neil R. P., Braathen, Geir O., Reimer, E., Alfier, R., Beck, A., Alpers, Matthias, Cisneros Sanchiz, Juan María, Claude, H., De Backer, Hugo, Dier, Horst, Dorokhov, Valery, Fast, Hans, Godin, Sophie, Hansen, Georg, Kanzawa, Hiroshi, Kois, Bogumil, Kondo, Yutaka, Kosmidis, Evangelos, Kyrö, Esko, Litynska, Z., Molyneux, M. J., Murphy, Gerry, Nakane, Hideaki, Ravegnani, Fabrizio, Varotsos, Costas, Vialle, C., Viatte, P., Yushkov, Vladimir, Zerefos, Christos S., Gathen, Peter von der, Parrondo, María Concepción
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Recursos:Instituto Nacional de Técnica Aeroespacial (INTA)
Repositorio:DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacial
OAI Identifier:oai:digital.inta.es:20.500.12666/1036
Acesso em linha:https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/1999GL010811
http://hdl.handle.net/20.500.12666/1036
Access Level:acceso abierto
Palavra-chave:Stratospheric ozone
Low temperatures
Polar vortex
Descrição
Resumo: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 45ppbv/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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