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dc.contributor.authorO'Doherty, Simon
dc.contributor.authorCunnold, D. M.
dc.contributor.authorMiller, Benjamin R.
dc.contributor.authorMuhle, Jens
dc.contributor.authorMcCulloch, A.
dc.contributor.authorSimmonds, P. G.
dc.contributor.authorManning, Alistair J.
dc.contributor.authorReimann, S.
dc.contributor.authorVollmer, M. K.
dc.contributor.authorGreally, B. R.
dc.contributor.authorFraser, P. J.
dc.contributor.authorSteele, L. P.
dc.contributor.authorKrummel, P. B.
dc.contributor.authorDunse, B. L.
dc.contributor.authorPorter, L. W.
dc.contributor.authorLunder, Chris R.
dc.contributor.authorSchmidbauer, N.
dc.contributor.authorHermansen, Ove
dc.contributor.authorSalameh, P. K.
dc.contributor.authorHarth, C. M.
dc.contributor.authorWang, R. H. J.
dc.contributor.authorWeiss, R. F.
dc.contributor.authorPrinn, Ronald G.
dc.date.accessioned2014-03-14T15:59:34Z
dc.date.available2014-03-14T15:59:34Z
dc.date.issued2009-12
dc.date.submitted2009-07
dc.identifier.issn0148-0227
dc.identifier.urihttp://hdl.handle.net/1721.1/85626
dc.description.abstractHigh-frequency, in situ observations from the Advanced Global Atmospheric Gases Experiment (AGAGE) and System for Observation of halogenated Greenhouse gases in Europe (SOGE) networks for the period 1998 to 2008, combined with archive flask measurements dating back to 1978, have been used to capture the rapid growth of HFC-125 (CHF[subscript 2]CF[subscript 3]) in the atmosphere. HFC-125 is the fifth most abundant HFC, and it currently makes the third largest contribution of the HFCs to atmospheric radiative forcing. At the beginning of 2008 the global average was 5.6 ppt in the lower troposphere and the growth rate was 16% yr[superscript −1]. The extensive observations have been combined with a range of modeling techniques to derive global emission estimates in a top-down approach. It is estimated that 21 kt were emitted globally in 2007, and the emissions are estimated to have increased 15% yr[superscript −1] since 2000. These estimates agree within approximately 20% with values reported to the United Nations Framework Convention on Climate Change (UNFCCC) provided that estimated emissions from East Asia are included. Observations of regionally polluted air masses at individual AGAGE sites have been used to produce emission estimates for Europe (the EU-15 countries), the United States, and Australia. Comparisons between these top-down estimates and bottom-up estimates based on reports by individual countries to the UNFCCC show a range of approximately four in the differences. This process of independent verification of emissions, and an understanding of the differences, is vital for assessing the effectiveness of international treaties, such as the Kyoto Protocol.en_US
dc.language.isoen_US
dc.publisherAmerican Geophysical Union (AGU)en_US
dc.relation.isversionofhttp://dx.doi.org/10.1029/2009jd012184en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceOther univ. web domainen_US
dc.titleGlobal and regional emissions of HFC-125 (CHF[subscript 2]CF[subscript 3]) from in situ and air archive atmospheric observations at AGAGE and SOGE observatoriesen_US
dc.typeArticleen_US
dc.identifier.citationO’Doherty, S., D. M. Cunnold, B. R. Miller, J. Mühle, A. McCulloch, P. G. Simmonds, A. J. Manning, et al. “ Global and Regional Emissions of HFC-125 (CHF 2 CF 3 ) from in Situ and Air Archive Atmospheric Observations at AGAGE and SOGE Observatories .” Journal of Geophysical Research 114, no. D23 (2009). Copyright © 2009 the American Geophysical Unionen_US
dc.contributor.departmentMassachusetts Institute of Technology. Center for Global Change Scienceen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciencesen_US
dc.contributor.mitauthorPrinn, Ronald G.en_US
dc.relation.journalJournal of Geophysical Researchen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsO'Doherty, S.; Cunnold, D. M.; Miller, B. R.; Mühle, J.; McCulloch, A.; Simmonds, P. G.; Manning, A. J.; Reimann, S.; Vollmer, M. K.; Greally, B. R.; Prinn, R. G.; Fraser, P. J.; Steele, L. P.; Krummel, P. B.; Dunse, B. L.; Porter, L. W.; Lunder, C. R.; Schmidbauer, N.; Hermansen, O.; Salameh, P. K.; Harth, C. M.; Wang, R. H. J.; Weiss, R. F.en_US
dc.identifier.orcidhttps://orcid.org/0000-0001-5925-3801
mit.licensePUBLISHER_POLICYen_US


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