Early unusual ozone loss during the Arctic winter 2002/2003 compared to other winters - Archive ouverte HAL Access content directly
Journal Articles Atmospheric Chemistry and Physics Discussions Year : 2004

Early unusual ozone loss during the Arctic winter 2002/2003 compared to other winters

(1) , (1) , (1) , (2) , (3) , (4) , (5) , (6) , (7) , (7)
1
2
3
4
5
6
7

Abstract

Total column ozone reduction in the Arctic is evaluated each winter since 1993/1994 by the transport method (3-D CTM passive ozone minus measurements). The cumulative loss from 1 December to the end of the season ranges from 5–10% during warm winters like 1998/1999, 2000/2001 and 2001/2002 up to 30%–32% during cold winters like 1994/1995 and 1995/1996. The 23% cumulative loss observed during the winter 2002/2003 is similar in amplitude to the 20–24% measured in 1996/1997 and 1999/2000 but the timing is different. It started unusually early in December after the occurrence of very low temperature at all stratospheric levels between 550 K and 435 K allowing PSC formation and thus chlorine activation. The early ozone loss of 2002/2003 is well captured by current 3-D CTM models.
Fichier principal
Vignette du fichier
acpd-4-5019-2004.pdf (5.5 Mo) Télécharger le fichier
Origin : Explicit agreement for this submission
Loading...

Dates and versions

hal-00327910 , version 1 (07-09-2004)

Identifiers

  • HAL Id : hal-00327910 , version 1

Cite

Florence Goutail, Jean-Pierre Pommereau, Franck Lefèvre, M. van Roozendael, S. B. Andersen, et al.. Early unusual ozone loss during the Arctic winter 2002/2003 compared to other winters. Atmospheric Chemistry and Physics Discussions, 2004, 4 (5), pp.5019-5044. ⟨hal-00327910⟩
134 View
56 Download

Share

Gmail Facebook Twitter LinkedIn More