First spaceborne observations of Antarctic stratospheric CIONO2 recovery

Austral spring 2002

M. Höpfner, T. von Clarmann, H. Fischer, N. Glatthor, U. Grabowski, S. Kellman, M. Kiefer, A. Linden, G. Mengistu Tsidu, M. Milz, T. Steck, G. P. Stiller, D. Y. Wang, B. Funke

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

We report on the first spaceborne observations of CION02 recovery in the springtime Antarctic polar vortex, performed, by the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) from 8 September to 13 October 2002. CIONO2 was retrieved by constrained nonlinear least squares fit from MIPAS measurements with a vertical resolution of 3.3-3.8 km and an estimated accuracy of 6-11% in the lower stratosphere (18-27 km). During the end of September 2002 an unusual major stratospheric warming affected the polar vortex. At the 475 K potential temperature level, CIONO2 showed a pronounced collar structure with high mixing ratios at the vortex edge and values of 0.5-0.6 ppbv in the inner region from 8 to 17 September. During the following 8 days, mean inner vortex CION02 increased by 0.8 ppbv accompanied by a decrease of C1O. Thus from 18 to 25 September the conversion into CIONO2 was a major pathway for chlorine deactivation at 475 K. After 25 September, CIONO2 decreased because of conversion into HCI. The onset of chlorine deactivation at 475 K is consistent with the latest polar stratospheric clouds detected by MIPAS on 18 September. At 625 K, mean inner vortex CIONO2 mixing ratios decreased from 2 to 1.35 ppbv from 8 September to 13 October. This evolution was interrupted by temporary chlorine activation from 12 to 16 September when values of 1.55 ppbv were reached. Comparison with previous measurements and model results of 1992 show similar chlorine partitioning at 475 K before the major warming in 2002. However, there is indication that in 2002 the evolution of chlorine deactivation at 475 K was characterized by a faster and more pronounced increase of CIONO2 compared with 1992.

Original languageEnglish
JournalJournal of Geophysical Research D: Atmospheres
Volume109
Issue number11
DOIs
Publication statusPublished - Jun 16 2004

Fingerprint

Upper atmosphere
Chlorine
chlorine
MIPAS
atmospheric sounding
Vortex flow
Michelson interferometers
recovery
vortices
Recovery
deactivation
vortex
polar vortex
mixing ratios
mixing ratio
warming
stratospheric warming
polar stratospheric cloud
potential temperature
collars

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Oceanography
  • Forestry
  • Ecology
  • Aquatic Science
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Cite this

Höpfner, M., von Clarmann, T., Fischer, H., Glatthor, N., Grabowski, U., Kellman, S., ... Funke, B. (2004). First spaceborne observations of Antarctic stratospheric CIONO2 recovery: Austral spring 2002. Journal of Geophysical Research D: Atmospheres, 109(11). https://doi.org/10.1029/2004JD004609
Höpfner, M. ; von Clarmann, T. ; Fischer, H. ; Glatthor, N. ; Grabowski, U. ; Kellman, S. ; Kiefer, M. ; Linden, A. ; Mengistu Tsidu, G. ; Milz, M. ; Steck, T. ; Stiller, G. P. ; Wang, D. Y. ; Funke, B. / First spaceborne observations of Antarctic stratospheric CIONO2 recovery : Austral spring 2002. In: Journal of Geophysical Research D: Atmospheres. 2004 ; Vol. 109, No. 11.
@article{cf6e9053b9684d509744ad37470df297,
title = "First spaceborne observations of Antarctic stratospheric CIONO2 recovery: Austral spring 2002",
abstract = "We report on the first spaceborne observations of CION02 recovery in the springtime Antarctic polar vortex, performed, by the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) from 8 September to 13 October 2002. CIONO2 was retrieved by constrained nonlinear least squares fit from MIPAS measurements with a vertical resolution of 3.3-3.8 km and an estimated accuracy of 6-11{\%} in the lower stratosphere (18-27 km). During the end of September 2002 an unusual major stratospheric warming affected the polar vortex. At the 475 K potential temperature level, CIONO2 showed a pronounced collar structure with high mixing ratios at the vortex edge and values of 0.5-0.6 ppbv in the inner region from 8 to 17 September. During the following 8 days, mean inner vortex CION02 increased by 0.8 ppbv accompanied by a decrease of C1O. Thus from 18 to 25 September the conversion into CIONO2 was a major pathway for chlorine deactivation at 475 K. After 25 September, CIONO2 decreased because of conversion into HCI. The onset of chlorine deactivation at 475 K is consistent with the latest polar stratospheric clouds detected by MIPAS on 18 September. At 625 K, mean inner vortex CIONO2 mixing ratios decreased from 2 to 1.35 ppbv from 8 September to 13 October. This evolution was interrupted by temporary chlorine activation from 12 to 16 September when values of 1.55 ppbv were reached. Comparison with previous measurements and model results of 1992 show similar chlorine partitioning at 475 K before the major warming in 2002. However, there is indication that in 2002 the evolution of chlorine deactivation at 475 K was characterized by a faster and more pronounced increase of CIONO2 compared with 1992.",
author = "M. H{\"o}pfner and {von Clarmann}, T. and H. Fischer and N. Glatthor and U. Grabowski and S. Kellman and M. Kiefer and A. Linden and {Mengistu Tsidu}, G. and M. Milz and T. Steck and Stiller, {G. P.} and Wang, {D. Y.} and B. Funke",
year = "2004",
month = "6",
day = "16",
doi = "10.1029/2004JD004609",
language = "English",
volume = "109",
journal = "Journal of Geophysical Research Atmospheres",
issn = "0148-0227",
number = "11",

}

Höpfner, M, von Clarmann, T, Fischer, H, Glatthor, N, Grabowski, U, Kellman, S, Kiefer, M, Linden, A, Mengistu Tsidu, G, Milz, M, Steck, T, Stiller, GP, Wang, DY & Funke, B 2004, 'First spaceborne observations of Antarctic stratospheric CIONO2 recovery: Austral spring 2002', Journal of Geophysical Research D: Atmospheres, vol. 109, no. 11. https://doi.org/10.1029/2004JD004609

First spaceborne observations of Antarctic stratospheric CIONO2 recovery : Austral spring 2002. / Höpfner, M.; von Clarmann, T.; Fischer, H.; Glatthor, N.; Grabowski, U.; Kellman, S.; Kiefer, M.; Linden, A.; Mengistu Tsidu, G.; Milz, M.; Steck, T.; Stiller, G. P.; Wang, D. Y.; Funke, B.

In: Journal of Geophysical Research D: Atmospheres, Vol. 109, No. 11, 16.06.2004.

Research output: Contribution to journalArticle

TY - JOUR

T1 - First spaceborne observations of Antarctic stratospheric CIONO2 recovery

T2 - Austral spring 2002

AU - Höpfner, M.

AU - von Clarmann, T.

AU - Fischer, H.

AU - Glatthor, N.

AU - Grabowski, U.

AU - Kellman, S.

AU - Kiefer, M.

AU - Linden, A.

AU - Mengistu Tsidu, G.

AU - Milz, M.

AU - Steck, T.

AU - Stiller, G. P.

AU - Wang, D. Y.

AU - Funke, B.

PY - 2004/6/16

Y1 - 2004/6/16

N2 - We report on the first spaceborne observations of CION02 recovery in the springtime Antarctic polar vortex, performed, by the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) from 8 September to 13 October 2002. CIONO2 was retrieved by constrained nonlinear least squares fit from MIPAS measurements with a vertical resolution of 3.3-3.8 km and an estimated accuracy of 6-11% in the lower stratosphere (18-27 km). During the end of September 2002 an unusual major stratospheric warming affected the polar vortex. At the 475 K potential temperature level, CIONO2 showed a pronounced collar structure with high mixing ratios at the vortex edge and values of 0.5-0.6 ppbv in the inner region from 8 to 17 September. During the following 8 days, mean inner vortex CION02 increased by 0.8 ppbv accompanied by a decrease of C1O. Thus from 18 to 25 September the conversion into CIONO2 was a major pathway for chlorine deactivation at 475 K. After 25 September, CIONO2 decreased because of conversion into HCI. The onset of chlorine deactivation at 475 K is consistent with the latest polar stratospheric clouds detected by MIPAS on 18 September. At 625 K, mean inner vortex CIONO2 mixing ratios decreased from 2 to 1.35 ppbv from 8 September to 13 October. This evolution was interrupted by temporary chlorine activation from 12 to 16 September when values of 1.55 ppbv were reached. Comparison with previous measurements and model results of 1992 show similar chlorine partitioning at 475 K before the major warming in 2002. However, there is indication that in 2002 the evolution of chlorine deactivation at 475 K was characterized by a faster and more pronounced increase of CIONO2 compared with 1992.

AB - We report on the first spaceborne observations of CION02 recovery in the springtime Antarctic polar vortex, performed, by the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) from 8 September to 13 October 2002. CIONO2 was retrieved by constrained nonlinear least squares fit from MIPAS measurements with a vertical resolution of 3.3-3.8 km and an estimated accuracy of 6-11% in the lower stratosphere (18-27 km). During the end of September 2002 an unusual major stratospheric warming affected the polar vortex. At the 475 K potential temperature level, CIONO2 showed a pronounced collar structure with high mixing ratios at the vortex edge and values of 0.5-0.6 ppbv in the inner region from 8 to 17 September. During the following 8 days, mean inner vortex CION02 increased by 0.8 ppbv accompanied by a decrease of C1O. Thus from 18 to 25 September the conversion into CIONO2 was a major pathway for chlorine deactivation at 475 K. After 25 September, CIONO2 decreased because of conversion into HCI. The onset of chlorine deactivation at 475 K is consistent with the latest polar stratospheric clouds detected by MIPAS on 18 September. At 625 K, mean inner vortex CIONO2 mixing ratios decreased from 2 to 1.35 ppbv from 8 September to 13 October. This evolution was interrupted by temporary chlorine activation from 12 to 16 September when values of 1.55 ppbv were reached. Comparison with previous measurements and model results of 1992 show similar chlorine partitioning at 475 K before the major warming in 2002. However, there is indication that in 2002 the evolution of chlorine deactivation at 475 K was characterized by a faster and more pronounced increase of CIONO2 compared with 1992.

UR - http://www.scopus.com/inward/record.url?scp=4243057385&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4243057385&partnerID=8YFLogxK

U2 - 10.1029/2004JD004609

DO - 10.1029/2004JD004609

M3 - Article

VL - 109

JO - Journal of Geophysical Research Atmospheres

JF - Journal of Geophysical Research Atmospheres

SN - 0148-0227

IS - 11

ER -