Publication: Challenges and research priorities to understand interactions between climate, ice sheets and global mean sea level during past interglacials
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2019-09-01
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Pergamon-Elsevier Science Ltd
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Abstract
Quaternary interglacials provide key observations of the Earth system's responses to orbital and greenhouse gas forcing. They also inform on the capabilities of Earth system models, used for projecting the polar ice-sheet and sea-level responses to a regional warmth comparable to that expected by 2100 C.E. However, a number of uncertainties remain regarding the processes and feedbacks linking climate, ice-sheet and sea-level changes during past warm intervals. Here, we delineate the major research questions that need to be resolved and future research directions that should be taken by the paleoclimate, sea-level and ice-sheet research communities in order to increase confidence in the use of past interglacial climate, ice-sheet and sea-level reconstructions to constrain future predictions. These questions were formulated during a joint workshop held by the PAGES-INQUA PALSEA (PALeo constraints on SEA level rise) and the PAGES-PMIP QUIGS (QUaternary InterGlacialS) Working Groups in September 2018.
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© 2019 Elsevier Ltd. This paper is an outcome of the joint workshop organized by the PAGES-INQUA PALSEA (PALeo constraints on SEA level rise) and the PAGES-PMIP QUIGS (QUaternary InterGlacialS) Working Groups in Galloway NJ (USA), 27–30 September 2018. We are very grateful to all the participants for the stimulating discussions that contributed to this article. We also thank Past Global Changes (PAGES), the International Union for Quaternary Research (INQUA), the United States National Science Foundation and Rutgers University, Institute of Earth, Ocean, and Atmospheric Sciences for their financial support. E.C. acknowledges financial support from the ChronoClimate project, funded by the Carlsberg Foundation. B.O.B acknowledges support by the National Center for Atmospheric Research, which is a major facility sponsored by the United States National Science Foundation under Cooperative Agreement No. 1852977, and additionally by the U.S. DOE (DE-SC0012606).