Simulation of the middle miocene climate optimum
Article
Article Title | Simulation of the middle miocene climate optimum |
---|---|
ERA Journal ID | 1874 |
Article Category | Article |
Authors | You, Y. (Author), Huber, M. (Author), Muller, R. D. (Author), Poulsen, C. J. (Author) and Ribbe, J. (Author) |
Journal Title | Geophysical Research Letters |
Journal Citation | 36 (4), p. L04702 |
Number of Pages | 5 |
Year | 2009 |
Publisher | John Wiley & Sons |
Place of Publication | United States |
ISSN | 0094-8276 |
1944-8007 | |
Digital Object Identifier (DOI) | https://doi.org/10.1029/2008GL036571 |
Web Address (URL) | https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2008GL036571 |
Abstract | Proxy data constraining land and ocean surface paleo-temperatures indicate that the Middle Miocene Climate Optimum (MMCO), a global warming event at ~15 Ma, had a global annual mean surface temperature of 18.4°C, about 3°C higher than present and equivalent to the warming predicted for the next century. We apply the latest National Center for Atmospheric Research (NCAR) Community Atmosphere Model CAM3.1 and Land Model CLM3.0 coupled to a slab ocean to examine sensitivity of MMCO climate to varying ocean heat fluxes derived from paleo sea surface temperatures (SSTs) and atmospheric carbon dioxide concentrations, using detailed reconstructions of Middle Miocene boundary conditions including paleogeography, elevation, vegetation and surface temperatures. Our model suggests that to maintain MMCO warmth consistent with proxy data, the required atmospheric CO2 concentration is about 460-580 ppmv, narrowed from the most recent estimate of 300-600 ppmv. |
Keywords | climate change; paleoclimatology; modelling; Miocene; carbon dioxide; sea surface temperature |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 370201. Climate change processes |
370202. Climatology | |
460207. Modelling and simulation | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | University of Sydney |
Purdue University, United States | |
University of Michigan, United States | |
Department of Biological and Physical Sciences |
https://research.usq.edu.au/item/9yyv0/simulation-of-the-middle-miocene-climate-optimum
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