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Natl. Acad. Sci. U.S.A."],"published-print":{"date-parts":[[2017,5,23]]},"abstract":"<jats:title>Significance<\/jats:title>\n                  <jats:p>Recent trends in atmospheric methane are not well understood as evidenced by multiple hypotheses proposed to explain the stabilization of methane concentrations in the early 2000s and the renewed growth since 2007. Here we use a multispecies inversion to determine the cause of these decadal trends. The most likely explanation for the renewed growth in atmospheric methane involves a decrease in hydroxyl (OH), the main sink for atmospheric methane, that is partially offset by a decrease in methane emissions. However, we also demonstrate that the problem of attributing methane trends from the current surface observation network, including isotopes, is underdetermined and does not allow unambiguous attribution of decadal trends.<\/jats:p>","DOI":"10.1073\/pnas.1616020114","type":"journal-article","created":{"date-parts":[[2017,4,17]],"date-time":"2017-04-17T20:50:22Z","timestamp":1492462222000},"page":"5367-5372","update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":267,"title":["Ambiguity in the causes for decadal trends in atmospheric methane and hydroxyl"],"prefix":"10.1073","volume":"114","author":[{"given":"Alexander J.","family":"Turner","sequence":"first","affiliation":[{"name":"School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0546-5857","authenticated-orcid":false,"given":"Christian","family":"Frankenberg","sequence":"additional","affiliation":[{"name":"Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125;"},{"name":"Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 21109"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paul O.","family":"Wennberg","sequence":"additional","affiliation":[{"name":"Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel J.","family":"Jacob","sequence":"additional","affiliation":[{"name":"School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138;"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"341","published-online":{"date-parts":[[2017,4,17]]},"reference":[{"key":"e_1_3_4_1_2","volume-title":"Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change","author":"IPCC","year":"2013","unstructured":"; IPCC, Climate change 2013: The physical science basis. 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