Severe ozone depletion in the cold Arctic winter 2004-05

M. Von Hobe; A. Ulanovsky; C. M. Volk; J. U. Grooß; S. Tilmes; P. Konopka; G. Günther; A. Werner; N. Spelten; G. Shur; V. Yushkov; F. Ravegnani; C. Schiller; R. Müller; F. Stroh

doi:10.1029/2006GL026945

Severe ozone depletion in the cold Arctic winter 2004-05

M. Von Hobe, A. Ulanovsky, C. M. Volk, J. U. Grooß, S. Tilmes, P. Konopka, G. Günther, A. Werner, N. Spelten, G. Shur, V. Yushkov, F. Ravegnani, C. Schiller, R. Müller, F. Stroh

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Abstract

During a flight of the M55 Geophysica into the Arctic polar vortex on 7 March 2005, ozone, halogen species, tracers and water vapor were measured. Up to 90% chlorine activation and up to 60% ozone loss were found above 14 km, reflecting the low temperatures and extensive PSC formation prevalent in the Arctic stratosphere over the 2004/05 winter. Observations are generally well reproduced by CLaMS model simulations. The observed levels of active chlorine can only be reproduced by assuming significant denitrification of about 70%. Moderate dehydration up to 0.5 ppm is observed in some locations. We deduce a partial column ozone loss of 62 (+8/-17) DU below 19 km on 7 March.

Original language	English
Article number	L17815
Journal	Geophysical Research Letters
Volume	33
Issue number	17
DOIs	https://doi.org/10.1029/2006GL026945
State	Published - Sep 1 2006

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title = "Severe ozone depletion in the cold Arctic winter 2004-05",

abstract = "During a flight of the M55 Geophysica into the Arctic polar vortex on 7 March 2005, ozone, halogen species, tracers and water vapor were measured. Up to 90\% chlorine activation and up to 60\% ozone loss were found above 14 km, reflecting the low temperatures and extensive PSC formation prevalent in the Arctic stratosphere over the 2004/05 winter. Observations are generally well reproduced by CLaMS model simulations. The observed levels of active chlorine can only be reproduced by assuming significant denitrification of about 70\%. Moderate dehydration up to 0.5 ppm is observed in some locations. We deduce a partial column ozone loss of 62 (+8/-17) DU below 19 km on 7 March.",

author = "\{Von Hobe\}, M. and A. Ulanovsky and Volk, \{C. M.\} and Groo{\ss}, \{J. U.\} and S. Tilmes and P. Konopka and G. G{\"u}nther and A. Werner and N. Spelten and G. Shur and V. Yushkov and F. Ravegnani and C. Schiller and R. M{\"u}ller and F. Stroh",

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doi = "10.1029/2006GL026945",

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T1 - Severe ozone depletion in the cold Arctic winter 2004-05

AU - Von Hobe, M.

AU - Ulanovsky, A.

AU - Volk, C. M.

AU - Grooß, J. U.

AU - Tilmes, S.

AU - Konopka, P.

AU - Günther, G.

AU - Werner, A.

AU - Spelten, N.

AU - Shur, G.

AU - Yushkov, V.

AU - Ravegnani, F.

AU - Schiller, C.

AU - Müller, R.

AU - Stroh, F.

PY - 2006/9/1

Y1 - 2006/9/1

N2 - During a flight of the M55 Geophysica into the Arctic polar vortex on 7 March 2005, ozone, halogen species, tracers and water vapor were measured. Up to 90% chlorine activation and up to 60% ozone loss were found above 14 km, reflecting the low temperatures and extensive PSC formation prevalent in the Arctic stratosphere over the 2004/05 winter. Observations are generally well reproduced by CLaMS model simulations. The observed levels of active chlorine can only be reproduced by assuming significant denitrification of about 70%. Moderate dehydration up to 0.5 ppm is observed in some locations. We deduce a partial column ozone loss of 62 (+8/-17) DU below 19 km on 7 March.

AB - During a flight of the M55 Geophysica into the Arctic polar vortex on 7 March 2005, ozone, halogen species, tracers and water vapor were measured. Up to 90% chlorine activation and up to 60% ozone loss were found above 14 km, reflecting the low temperatures and extensive PSC formation prevalent in the Arctic stratosphere over the 2004/05 winter. Observations are generally well reproduced by CLaMS model simulations. The observed levels of active chlorine can only be reproduced by assuming significant denitrification of about 70%. Moderate dehydration up to 0.5 ppm is observed in some locations. We deduce a partial column ozone loss of 62 (+8/-17) DU below 19 km on 7 March.

UR - https://www.scopus.com/pages/publications/33845662220

U2 - 10.1029/2006GL026945

DO - 10.1029/2006GL026945

M3 - Article

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SN - 0094-8276

VL - 33

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 17

M1 - L17815

ER -

Severe ozone depletion in the cold Arctic winter 2004-05

Abstract

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