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Comment on Tropospheric Temperature Response to Stratospheric Ozone Recovery in the 21St Century by Hu Et Al. (2011) : Volume 11, Issue 12 (14/12/2011)

By McLandress, C.

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Book Id: WPLBN0003995822
Format Type: PDF Article :
File Size: Pages 20
Reproduction Date: 2015

Title: Comment on Tropospheric Temperature Response to Stratospheric Ozone Recovery in the 21St Century by Hu Et Al. (2011) : Volume 11, Issue 12 (14/12/2011)  
Author: McLandress, C.
Volume: Vol. 11, Issue 12
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2011
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Perlwitz, J., Shepherd, T. G., & Mclandress, C. (2011). Comment on Tropospheric Temperature Response to Stratospheric Ozone Recovery in the 21St Century by Hu Et Al. (2011) : Volume 11, Issue 12 (14/12/2011). Retrieved from http://ebooklibrary.org/


Description
Description: Department of Physics, University of Toronto, Toronto, Ontario, Canada. In a recent paper Hu et al. (2011) suggest that the recovery of stratospheric ozone during the first half of this century will significantly enhance free tropospheric and surface warming caused by the anthropogenic increase of greenhouse gases, with the effects being most pronounced in Northern Hemisphere middle and high latitudes. These surprising results are based on a multi-model analysis of IPCC AR4 model simulations with and without prescribed stratospheric ozone recovery. Hu et al. suggest that in order to properly quantify the tropospheric and surface temperature response to stratospheric ozone recovery, it is necessary to run coupled atmosphere-ocean climate models with stratospheric ozone chemistry. The results of such an experiment are presented here, using a state-of-the-art chemistry-climate model coupled to a three-dimensional ocean model. In contrast to Hu et al., we find a much smaller Northern Hemisphere tropospheric temperature response to ozone recovery, which is of opposite sign. We argue that their result is an artifact of the incomplete removal of the large effect of greenhouse gas warming between the two different sets of models.

Summary
Comment on Tropospheric temperature response to stratospheric ozone recovery in the 21st century by Hu et al. (2011)

Excerpt
Arblaster, J. M. and Meehl, G. A.: Contributions of external forcings to southern annular mode trends, J. Climate, 19, 2896–2904, 2006.; Arblaster, J. M., Meehl, G. A., and Karoly, D. J.: Future climate change in the Southern Hemisphere: competing effects of ozone and greenhouse gases, Geophys. Res. Lett., 38, L02701, doi:10.1029/2010GL045384, 2011.; Crook, J. A. and Forster, P. M.: A balance between radiative forcing and climate feedback in the modeled 20th century temperature response, J. Geophys. Res., 116, D17108, doi:10.1029/2011JD015924, 2011.; Deser, C., Tomas, R., Alexander, M., and Lawrence, D.: The seasonal atmospheric response to projected Arctic sea ice loss in the late 21st century, J. Climate, 23, 333–351, doi:10.1175/2009JCLI3053.1, 2010.; Eyring, V., Waugh, D. W., Bodeker, G. E., Cordero, E., Akiyoshi, H., Austin, J., Beagley, S. R., Boville, B., Braesicke, P., Bruhl, C., Butchart, N., Chipperfield, M. P., Dameris, M., Deckert, R., Deushi, M., Frith, S. M., Garcia, R. R., Gettelman, A., Giorgetta, M., Kinnison, D. E., Mancini, E., Manzini, E., Marsh, D. R., Matthes, S., Nagashima T., Newman, P. A., Nielsen, J. E., Pawson, S., Pitari, G., Plummer, D. A., Rozanov, E., Schraner, M., Scinocca, J. F., Semeniuk K., Shibata, K., Steil, B., Stolarski, R., Tian, W., and Yoshiki, M.: Multimodel projections of stratospheric ozone in the 21st century, J. Geophys. Res., 112, D16303, doi:10.1029/2006JD008332, 2007.; Fogt, R. L., Perlwitz, J., Monaghan, A. J., Bromwich, D. H., Jones, J. M., and Marshall, G. J.: Historical SAM variability. Part II: Twentieth-century variability and trends from reconstructions, observations, and the IPCC AR4 models, J. Climate, 22, 5346–5365, 2009.; de Grandpré, J., Beagley, S. R., Fomichev, V. I., Griffioen, E., McConnell, J. C., Medvedev, A. S., and Shepherd, T. G.: Ozone climatology using interactive chemistry: results from the Canadian middle atmosphere model, J. Geophys. Res., 105, 26475–26491, 2000.; Hu, Y., Xia, Y., and Fu, Q.: Tropospheric temperature response to stratospheric ozone recovery in the 21st century, Atmos. Chem. Phys., 11, 7687–7699, doi:10.5194/acp-11-7687-2011, 2011.; Intergovernmental Panel on Climate Change (IPCC): Climate Change 2001: The Scientific Basis: Contribution of Working Group I to the Third Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Houghton, J. T., Ding, Y., Griggs, D. J., Noguer, M., van der Linden, P. J., Dai, X. Maskell, K., and Johnson, C. A., Cambridge University Press, New York, 881 pp., 2001.; Intergovernmental Panel on Climate Change (IPCC): Climate Change 2007: The Physical Scientific Basis: Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Solomon, S., Qin, D., Manning, M., Chen, Z., Marquis, M., Averyt, K. B., Tignor, M., and Miller, H. L., Cambridge University Press, New York, 996 pp., 2007.; McLandress, C., Jonsson, A. I., Plummer, D. A., Reader, M. C., Scinocca, J. F., and Sh

 

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