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Temperature-Driven Global Sea-Level Variability In The Common Era
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2016
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Source: PNAS 113 (11) E1434-E1441; https://doi.org/10.1073/pnas.1517056113
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Journal Title:Proceedings of the National Academy of Sciences of the United States of America
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Description:We assess the relationship between temperature and global sea-level (GSL) variability over the Common Era through a statistical metaanalysis of proxy relative sea-level reconstructions and tide-gauge data. GSL rose at 0.1 +/- 0.1 mm/y (2 sigma) over 0-700 CE. A GSL fall of 0.2 +/- 0.2 mm/y over 1000-1400 CE is associated with similar to 0.2 degrees C global mean cooling. A significant GSL acceleration began in the 19th century and yielded a 20th century rise that is extremely likely (probability P >= 0.95) faster than during any of the previous 27 centuries. A semiempirical model calibrated against the GSL reconstruction indicates that, in the absence of anthropogenic climate change, it is extremely likely (P = 0.95) that 20th century GSL would have risen by less than 51% of the observed 13.8 +/- 1.5 cm. The new semiempirical model largely reconciles previous differences between semiempirical 21st century GSL projections and the process model-based projections summarized in the Intergovernmental Panel on Climate Change's Fifth Assessment Report.
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Source:PNAS 113 (11) E1434-E1441; https://doi.org/10.1073/pnas.1517056113
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Pubmed ID:26903659
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Pubmed Central ID:PMC4801270
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Rights Information:Other
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Compliance:PMC
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