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dc.contributor.authorSolomon, Susan
dc.date.accessioned2020-04-15T17:20:07Z
dc.date.available2020-04-15T17:20:07Z
dc.date.issued2019-11
dc.date.submitted2019-07
dc.identifier.issn1748-9326
dc.identifier.urihttps://hdl.handle.net/1721.1/124664
dc.description.abstractPrevious work has examined the Brewer–Dobson circulation (BDC) changes for 1980–2009 based on satellite Microwave Sounding Unit (MSU/AMSU) lower-stratospheric temperature (T LS ) observations and ERA-Interim reanalysis data. Here we examine the BDC changes for the longer period now available (1980–2018), which also allows analysis of both the ozone depletion (1980–1999) and ozone healing (2000–2018) periods. We provide observational evidence that the annual mean BDC accelerated for 1980–1999 but decelerated for 2000–2018, with the changes largely driven by the Southern Hemisphere (SH), which might be partly contributed by the effects of ozone depletion and healing. We also show that the annual mean BDC has accelerated in the last 40 years (at the 90% confidence level) with a relative strengthening of ~1.7% per decade. This overall acceleration was driven by both Northern Hemisphere (40%) and SH (60%) cells. Significant SH radiative warming is also identified in September for 2000–2018 after excluding the year 2002 when a very rare SH stratospheric sudden warming occurred, supporting the view that healing of the Antarctic ozone layer has now begun to occur during the month of September. ©2019en_US
dc.description.sponsorshipNASA (grant: 80NSSC18K1031)en_US
dc.description.sponsorshipNSF (grant: AGS-1821437)en_US
dc.description.sponsorshipNSF (grant: AGS1848863)en_US
dc.description.sponsorshipNOAA (grant: NA18OAR431042)en_US
dc.language.isoen
dc.publisherIOP Publishingen_US
dc.relation.isversionof10.1088/1748-9326/AB4DE7en_US
dc.rightsCreative Commons Attribution 4.0 International licenseen_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.sourceIOP Publishingen_US
dc.titleObserved changes in Brewer–Dobson circulation for 1980–2018en_US
dc.typeArticleen_US
dc.identifier.citationFu, Qiang, Susan Solomon, Hamid A. Pahlavan, and Pu Lin, "Observed changes in Brewer-Dobson circulation for 1980-2018." Environmental research letters 14, 11 (November 2019): no. 114026 doi 10.1088/1748-9326/AB4DE7 ©2019 Author(s)en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciencesen_US
dc.relation.journalEnvironmental research lettersen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2020-04-07T14:56:27Z
dspace.orderedauthorsQiang Fu; Susan Solomon;, Hamid A Pahlavan; Pu Linen_US
dspace.date.submission2020-04-07T14:56:31Z
mit.journal.volume14en_US
mit.journal.issue11en_US
mit.licensePUBLISHER_CC
mit.metadata.statusComplete


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