http://onlinelibrary.wiley.com/doi/10.1002/2017JD026912/abstract
Stratospheric Dynamical Response and Ozone Feedbacks in the Presence of SO2 Injections† <http://onlinelibrary.wiley.com/doi/10.1002/2017JD026912/abstract#jgrd54211-note-0001> Authors - Jadwiga H. Richter, - <[email protected]> - <http://orcid.org/0000-0001-7048-0781> 1. - <[email protected]> <http://onlinelibrary.wiley.com/advanced/search/results?searchRowCriteria%5B0%5D.fieldName=author&start=1&resultsPerPage=20&searchRowCriteria%5B0%5D.queryString=%22Jadwiga%20H.%20Richter%22> - Simone Tilmes, - <http://orcid.org/0000-0002-6557-3569> 1. 2. <http://onlinelibrary.wiley.com/advanced/search/results?searchRowCriteria%5B0%5D.fieldName=author&start=1&resultsPerPage=20&searchRowCriteria%5B0%5D.queryString=%22Simone%20Tilmes%22> - Michael J. Mills, - <http://orcid.org/0000-0002-8054-1346> 1. <http://onlinelibrary.wiley.com/advanced/search/results?searchRowCriteria%5B0%5D.fieldName=author&start=1&resultsPerPage=20&searchRowCriteria%5B0%5D.queryString=%22Michael%20J.%20Mills%22> - Joseph J. Tribbia, - <http://orcid.org/0000-0003-1639-9688> 1. <http://onlinelibrary.wiley.com/advanced/search/results?searchRowCriteria%5B0%5D.fieldName=author&start=1&resultsPerPage=20&searchRowCriteria%5B0%5D.queryString=%22Joseph%20J.%20Tribbia%22> - Ben Kravitz, - <http://orcid.org/0000-0001-6318-1150> 1. <http://onlinelibrary.wiley.com/advanced/search/results?searchRowCriteria%5B0%5D.fieldName=author&start=1&resultsPerPage=20&searchRowCriteria%5B0%5D.queryString=%22Ben%20Kravitz%22> - Douglas G. MacMartin, - <http://orcid.org/0000-0003-1987-9417> 1. 2. <http://onlinelibrary.wiley.com/advanced/search/results?searchRowCriteria%5B0%5D.fieldName=author&start=1&resultsPerPage=20&searchRowCriteria%5B0%5D.queryString=%22Douglas%20G.%20MacMartin%22> - Francis Vitt, - <http://orcid.org/0000-0002-8684-214X> 1. <http://onlinelibrary.wiley.com/advanced/search/results?searchRowCriteria%5B0%5D.fieldName=author&start=1&resultsPerPage=20&searchRowCriteria%5B0%5D.queryString=%22Francis%20Vitt%22> - Jean-Francois Lamarque - <http://orcid.org/0000-0002-4225-5074> 1. <http://onlinelibrary.wiley.com/advanced/search/results?searchRowCriteria%5B0%5D.fieldName=author&start=1&resultsPerPage=20&searchRowCriteria%5B0%5D.queryString=%22Jean%E2%80%90Francois%20Lamarque%22> - Accepted manuscript online:6 November 2017Full publication history <http://onlinelibrary.wiley.com/doi/10.1002/2017JD026912/abstract#publication-history> - DOI:10.1002/2017JD026912 View/save citation <http://onlinelibrary.wiley.com/enhanced/exportCitation/doi/10.1002/2017JD026912> - Cited by (CrossRef):0 articlesCheck for updates <http://onlinelibrary.wiley.com/enhanced/refreshCitedBy?doi=10.1002/2017JD026912&refreshCitedByCounter=true> Citation tools - <https://www.altmetric.com/details.php?domain=onlinelibrary.wiley.com&doi=10.1002%2F2017jd026912> - †This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1002/2017jd026912 Abstract Injections of sulfur dioxide into the stratosphere are among several proposed methods of solar radiation management. Such injections could cool the Earth's climate. However, they would significantly alter the dynamics of the stratosphere. We explore here the stratospheric dynamical response to sulfur dioxide injections ∼ 5 km above the tropopause at multiple latitudes (equator, 15° S, 15° N, 30° S and 30° N) using a fully coupled Earth system model, Community Earth System Model, version 1, with the Whole Atmosphere Community Climate Model as its atmospheric component (CESM1(WACCM)). We find that in all simulations, the tropical lower stratosphere warms primarily between 30° S and 30° N, regardless of injection latitude. The quasi-biennial oscillation (QBO) of the tropical zonal wind is altered by the various sulfur dioxide injections. In a simulation with a 12 Tg yr−1equatorial injection, and with fully interactive chemistry, the QBO period lengthens to ∼ 3.5 years, but never completely disappears. However, in a simulation with specified (or non-interactive) chemical fields, including O3and prescribed aerosols taken from the interactive simulation, the oscillation is virtually lost. In addition we find that geoengineering does not always lengthen the QBO. We further demonstrate that the QBO period changes from 24 to 12 - 17 months in simulations with sulfur dioxide injections placed poleward of the equator. Our study points to the importance of understanding and verifying of the complex interactions between aerosols, atmospheric dynamics, and atmospheric chemistry as well as understanding the effects of sulfur dioxide injections placed away from the Equator on the QBO -- You received this message because you are subscribed to the Google Groups "geoengineering" group. 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