A suite of Early Eocene (~55 Ma) climate model boundary conditions
Author:
Herold N., Buzan J., Seton M., Goldner A., Green J. A. M.ORCID, Müller R. D.ORCID, Markwick P., Huber M.ORCID
Abstract
Abstract. We describe a set of Early Eocene (~55 Ma) climate model boundary conditions constructed in a self-consistent reference frame and incorporating recent data and methodologies. Given the growing need for uniform experimental design within the Eocene climate modelling community, we make publically available our datasets of Eocene topography, bathymetry, tidal dissipation, vegetation, aerosol distributions and river runoff. Particularly our Eocene topography and bathymetry has been significantly improved compared to previously utilized boundary conditions. Major improvements include the paleogeography of Antarctica, Australia, Europe, the Drake Passage and the Isthmus of Panama, and our boundary conditions include modelled estimates of Eocene aerosol distributions and tidal dissipation for the first time, both consistent with our paleotopography and paleobathymetry. The resolution of our datasets (1° × 1°) is also unprecedented and will facilitate high resolution climate simulations. In light of the inherent uncertainties involved in reconstructing global boundary conditions for past time periods these datasets should be considered as one interpretation of the available data. This paper marks the beginning of a process for reconstructing a set of accurate, open-access Eocene boundary conditions for use in climate models.
Publisher
Copernicus GmbH
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