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Reconciliation of essential process parameters for an enhanced predictability of Arctic stratospheric ozone loss and its climate interactions

von Hobe, M. and Bekki, S. and Borrmann, Stephan and Cairo, F. and D'Amato, F. and Di Donfrancesco, G. and Dörnbrack, Andreas and Ebersoldt, A. and Ebert, M. and Emde, C. and Engel, I. and Ern, M. and Frey, W. and Griessbach, S. and Grooß, J.-U. and Gulde, T. and Günther, G. and Hösen, E. and Hoffmann, L. and Homonnai, V. and Hoyle, C. R. and Isaksen, I. S. A and Jackson, D. R. and Jánosi, I. M. and Kandler, K. and Kalicinsky, C. and Keil, A. and Khaykin, S. M. and Khosrawi, F. and Kivi, R. and Kuttippurath, J. and Laube, J. C. and Lefèvre, F. and Lehmann, R. and Ludmann, S. and Luo, B. P. and Marchand, M. and Meyer, J. and Mitev, Valentin and Molleker, S. and Müller, R. and Oelhaf, H. and Olschewski, F. and Orsolini, Y. and Peter, T. and Pfeilsticker, K. and Piesch, C. and Pitts, M. C. and Poole, L. R. and Pope, F. D. and Ravegnan, F. and Rex, M. and Riese, M. . and Röckmann, T. and Rognerud, B. and Roiger, A. and Rolf, C. and Santee, M. L. and Scheibe, Monika and Schiller, C. and Schlager, Hans and Siciliani de Cumis, M. and Sitnikov, N. and Søvde, O.A. and Spang, R. and Spelten, N. and Stordal, F. and Sumińska-Ebersoldt, O. and Viciani, S. and Volk, C.M. and vom Scheidt, M. and Ulanovski, A. and von der Gathen, P. and Walker, K. and Wegner, T. and Weigel, R. and Weinbuch, S. and Wetzel, G. and Wienhold, F.G. and Wintel, J. and Wohltmann, I. and Woiwode, W. and Young, I.A.K. and Yushkov, V. and Zobrist, B. and Stroh, F. (2013) Reconciliation of essential process parameters for an enhanced predictability of Arctic stratospheric ozone loss and its climate interactions. Atmospheric Chemistry and Physics, 13, pp. 9233-9268. Copernicus Publications. DOI: 10.5194/acp-13-9233-2013 ISSN 1680-7316

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Official URL: http://www.atmos-chem-phys.net/13/9233/2013/acp-13-9233-2013.pdf

Abstract

Significant reductions in stratospheric ozone occur inside the polar vortices each spring when chlorine radicals produced by heterogeneous reactions on cold particle surfaces in winter destroy ozone mainly in two catalytic cycles, the ClO dimer cycle and the ClO/BrO cycle. Chlorofluorocarbons (CFCs), which are responsible for most of the chlorine currently present in the stratosphere, have been banned by the Montreal Protocol and its amendments, and the ozone layer is predicted to recover to 1980 levels within the next few decades. During the same period, however, climate change is expected to alter the temperature, circulation patterns and chemical composition in the stratosphere, and possible geo-engineering ventures to mitigate climate change may lead to additional changes. To realistically predict the response of the ozone layer to such influences requires the correct representation of all relevant processes. The European project RECONCILE has comprehensively addressed remaining questions in the context of polar ozone depletion, with the objective to quantify the rates of some of the most relevant, yet still uncertain physical and chemical processes. To this end RECONCILE used a broad approach of laboratory experiments, two field missions in the Arctic winter 2009/10 employing the high altitude research aircraft M55-Geophysica and an extensive match ozone sonde campaign, as well as microphysical and chemical transport modelling and data assimilation. Some of the main outcomes of RECONCILE are as follows: (1) vortex meteorology: the 2009/10 Arctic winter was unusually cold at stratospheric levels during the six-week period from mid-December 2009 until the end of January 2010, with reduced transport and mixing across the polar vortex edge; polar vortex stability and how it is influenced by dynamic processes in the troposphere has led to unprecedented, synoptic-scale stratospheric regions with temperatures below the frost point; in these regions stratospheric ice clouds have been observed, extending over >106km2 during more than 3 weeks. (2) Particle microphysics: heterogeneous nucleation of nitric acid trihydrate (NAT) particles in the absence of ice has been unambiguously demonstrated; conversely, the synoptic scale ice clouds also appear to nucleate heterogeneously; a variety of possible heterogeneous nuclei has been characterised by chemical analysis of the non-volatile fraction of the background aerosol; substantial formation of solid particles and denitrification via their sedimentation has been observed and model parameterizations have been improved. (3) Chemistry: strong evidence has been found for significant chlorine activation not only on polar stratospheric clouds (PSCs) but also on cold binary aerosol; laboratory experiments and field data on the ClOOCl photolysis rate and other kinetic parameters have been shown to be consistent with an adequate degree of certainty; no evidence has been found that would support the existence of yet unknown chemical mechanisms making a significant contribution to polar ozone loss. (4) Global modelling: results from process studies have been implemented in a prognostic chemistry climate model (CCM); simulations with improved parameterisations of processes relevant for polar ozone depletion are evaluated against satellite data and other long term records using data assimilation and detrended fluctuation analysis. Finally, measurements and process studies within RECONCILE were also applied to the winter 2010/11, when special meteorological conditions led to the highest chemical ozone loss ever observed in the Arctic. In addition to quantifying the 2010/11 ozone loss and to understand its causes including possible connections to climate change, its impacts were addressed, such as changes in surface ultraviolet (UV) radiation in the densely populated northern mid-latitudes.

Item URL in elib:https://elib.dlr.de/81162/
Document Type:Article
Title:Reconciliation of essential process parameters for an enhanced predictability of Arctic stratospheric ozone loss and its climate interactions
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
von Hobe, M.UNSPECIFIEDUNSPECIFIED
Bekki, S.UNSPECIFIEDUNSPECIFIED
Borrmann, StephanMPI für Chemie, MainzUNSPECIFIED
Cairo, F.UNSPECIFIEDUNSPECIFIED
D'Amato, F.UNSPECIFIEDUNSPECIFIED
Di Donfrancesco, G.UNSPECIFIEDUNSPECIFIED
Dörnbrack, Andreasdlr, ipaUNSPECIFIED
Ebersoldt, A.KIT, KarlsruheUNSPECIFIED
Ebert, M.Fachbereich für Materialwissenschaften, TU DarmstadtUNSPECIFIED
Emde, C.UNSPECIFIEDUNSPECIFIED
Engel, I.UNSPECIFIEDUNSPECIFIED
Ern, M.FZ Jülich, JülichUNSPECIFIED
Frey, W.MPI für Chemie, MainzUNSPECIFIED
Griessbach, S.UNSPECIFIEDUNSPECIFIED
Grooß, J.-U.UNSPECIFIEDUNSPECIFIED
Gulde, T.IMK, Forschungszentrum KarlsruheUNSPECIFIED
Günther, G.UNSPECIFIEDUNSPECIFIED
Hösen, E.UNSPECIFIEDUNSPECIFIED
Hoffmann, L.UNSPECIFIEDUNSPECIFIED
Homonnai, V.UNSPECIFIEDUNSPECIFIED
Hoyle, C. R.UNSPECIFIEDUNSPECIFIED
Isaksen, I. S. AUNSPECIFIEDUNSPECIFIED
Jackson, D. R.UNSPECIFIEDUNSPECIFIED
Jánosi, I. M.UNSPECIFIEDUNSPECIFIED
Kandler, K.UNSPECIFIEDUNSPECIFIED
Kalicinsky, C.UNSPECIFIEDUNSPECIFIED
Keil, A.UNSPECIFIEDUNSPECIFIED
Khaykin, S. M.UNSPECIFIEDUNSPECIFIED
Khosrawi, F.UNSPECIFIEDUNSPECIFIED
Kivi, R.UNSPECIFIEDUNSPECIFIED
Kuttippurath, J.UNSPECIFIEDUNSPECIFIED
Laube, J. C.UNSPECIFIEDUNSPECIFIED
Lefèvre, F.UNSPECIFIEDUNSPECIFIED
Lehmann, R.UNSPECIFIEDUNSPECIFIED
Ludmann, S.UNSPECIFIEDUNSPECIFIED
Luo, B. P.UNSPECIFIEDUNSPECIFIED
Marchand, M.UNSPECIFIEDUNSPECIFIED
Meyer, J.UNSPECIFIEDUNSPECIFIED
Mitev, ValentinUniv. Neuchâtel, Neuchâtel, CHUNSPECIFIED
Molleker, S.UNSPECIFIEDUNSPECIFIED
Müller, R.UNSPECIFIEDUNSPECIFIED
Oelhaf, H.UNSPECIFIEDUNSPECIFIED
Olschewski, F.UNSPECIFIEDUNSPECIFIED
Orsolini, Y.UNSPECIFIEDUNSPECIFIED
Peter, T.UNSPECIFIEDUNSPECIFIED
Pfeilsticker, K.IUP, Univ. HeidelbergUNSPECIFIED
Piesch, C.IMK, Forschungszentrum KarlsruheUNSPECIFIED
Pitts, M. C.UNSPECIFIEDUNSPECIFIED
Poole, L. R.NASA Langley Research Center, Hampton, VA, USAUNSPECIFIED
Pope, F. D.UNSPECIFIEDUNSPECIFIED
Ravegnan, F.UNSPECIFIEDUNSPECIFIED
Rex, M.UNSPECIFIEDUNSPECIFIED
Riese, M. .Univ. WuppertalUNSPECIFIED
Röckmann, T.UNSPECIFIEDUNSPECIFIED
Rognerud, B.Univ. of Oslo, NUNSPECIFIED
Roiger, A.DLRUNSPECIFIED
Rolf, C.UNSPECIFIEDUNSPECIFIED
Santee, M. L.UNSPECIFIEDUNSPECIFIED
Scheibe, Monikadlr, ipaUNSPECIFIED
Schiller, C.UNSPECIFIEDUNSPECIFIED
Schlager, Hansdlr, ipaUNSPECIFIED
Siciliani de Cumis, M.UNSPECIFIEDUNSPECIFIED
Sitnikov, N.UNSPECIFIEDUNSPECIFIED
Søvde, O.A.Univ. of Oslo, NUNSPECIFIED
Spang, R.UNSPECIFIEDUNSPECIFIED
Spelten, N.UNSPECIFIEDUNSPECIFIED
Stordal, F.UNSPECIFIEDUNSPECIFIED
Sumińska-Ebersoldt, O.UNSPECIFIEDUNSPECIFIED
Viciani, S.UNSPECIFIEDUNSPECIFIED
Volk, C.M.UNSPECIFIEDUNSPECIFIED
vom Scheidt, M.UNSPECIFIEDUNSPECIFIED
Ulanovski, A.UNSPECIFIEDUNSPECIFIED
von der Gathen, P.UNSPECIFIEDUNSPECIFIED
Walker, K.UNSPECIFIEDUNSPECIFIED
Wegner, T.UNSPECIFIEDUNSPECIFIED
Weigel, R.UNSPECIFIEDUNSPECIFIED
Weinbuch, S.UNSPECIFIEDUNSPECIFIED
Wetzel, G.UNSPECIFIEDUNSPECIFIED
Wienhold, F.G.UNSPECIFIEDUNSPECIFIED
Wintel, J.UNSPECIFIEDUNSPECIFIED
Wohltmann, I.UNSPECIFIEDUNSPECIFIED
Woiwode, W.UNSPECIFIEDUNSPECIFIED
Young, I.A.K.UNSPECIFIEDUNSPECIFIED
Yushkov, V.UNSPECIFIEDUNSPECIFIED
Zobrist, B.UNSPECIFIEDUNSPECIFIED
Stroh, F.UNSPECIFIEDUNSPECIFIED
Date:16 September 2013
Journal or Publication Title:Atmospheric Chemistry and Physics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:13
DOI :10.5194/acp-13-9233-2013
Page Range:pp. 9233-9268
Publisher:Copernicus Publications
ISSN:1680-7316
Status:Published
Keywords:RECONCILE, polar ozone, polar stratospheric cloud
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Atmosphären- und Klimaforschung
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Cloud Physics and Traffic Meteorology
Deposited By: Freund, Jana
Deposited On:15 Feb 2013 10:16
Last Modified:02 May 2019 14:04

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