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  The likelihood of recent record warmth

Mann, M. E., Rahmstorf, S., Steinman, B. A., Tingley, M., Miller, S. K. (2016): The likelihood of recent record warmth. - Scientific Reports, 6, 19831.
https://doi.org/10.1038/srep19831

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Mann, M. E.1, Author
Rahmstorf, Stefan2, Author              
Steinman, B. A.1, Author
Tingley, M.1, Author
Miller, S. K.1, Author
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1External Organizations, ou_persistent22              
2Potsdam Institute for Climate Impact Research, ou_persistent13              

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 Abstract: 2014 was nominally the warmest year on record for both the globe and northern hemisphere based on historical records spanning the past one and a half centuries1,2. It was the latest in a recent run of record temperatures spanning the past decade and a half. Press accounts reported odds as low as one-in-650 million that the observed run of global temperature records would be expected to occur in the absence of human-caused global warming. Press reports notwithstanding, the question of how likely observed temperature records may have have been both with and without human influence is interesting in its own right. Here we attempt to address that question using a semi-empirical approach that combines the latest (CMIP53) climate model simulations with observations of global and hemispheric mean temperature. We find that individual record years and the observed runs of record-setting temperatures were extremely unlikely to have occurred in the absence of human-caused climate change, though not nearly as unlikely as press reports have suggested. These same record temperatures were, by contrast, quite likely to have occurred in the presence of anthropogenic climate forcing.

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 Dates: 2016
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1038/srep19831
PIKDOMAIN: Earth System Analysis - Research Domain I
eDoc: 7047
Research topic keyword: Atmosphere
Model / method: Nonlinear Data Analysis
Organisational keyword: RD1 - Earth System Analysis
Working Group: Earth System Model Development
Working Group: Earth System Modes of Operation
 Degree: -

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Title: Scientific Reports
Source Genre: Journal, SCI, Scopus, p3, OA
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Pages: - Volume / Issue: 6 Sequence Number: 19831 Start / End Page: - Identifier: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/journals2_395