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Whither methane in the IPCC process?

An Author Correction to this article was published on 05 February 2018

This article has been updated

In anticipation of the IPCC's Sixth Assessment Report we look back at our evolving understanding of atmospheric CH4. Though sources, sinks, and atmospheric burden are now well known, apportionment between the myriad sources and sinks, and forecasting natural emissions, remains a challenge.

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Figure 1: Assessments of methane.

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  • 05 February 2018

    In the version of this Commentary originally published, it incorrectly stated that in ref. 14 the search for evidence of the rapid release of old stored carbon as CH4 in the Younger Dryas–Preboreal warming was 'inconclusive'; it should have read 'negative'. The timing of the Younger Dryas–Preboreal warming was incorrectly given as '14,000 years ago'; it should have read '11,600 years ago'. Additionally, in the figure legend, 'Geological sinks incl. oceans' should have read 'Geological sources incl. oceans'. These errors have now been corrected in the online versions of the Commentary.


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Correspondence to Patrick M. Crill.

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Crill, P., Thornton, B. Whither methane in the IPCC process?. Nature Clim Change 7, 678–680 (2017).

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