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A suite of early Eocene ( ∼ 55 Ma) climate model boundary conditions

Herold, N. and Buzan, J. and Seton, M. and Goldner, A. and Green, J.A.M. and Muller, R.D. and Markwick, P. and Huber, M. (2014) A suite of early Eocene ( ∼ 55 Ma) climate model boundary conditions. Geoscientific Model Development, 7. pp. 2077-2090. DOI: 10.5194/gmd-7-2077-2014

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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 and the challenges faced in simulating the prominent features of Eocene climate, we make publicly available our data sets of Eocene topography, bathymetry, tidal dissipation, vegetation, aerosol distributions and river runoff. Major improvements in our boundary conditions over previous efforts include the implementation of the ANTscape palaeotopography of Antarctica, more accurate representations of the Drake Passage and Tasman Gateway, as well as an approximation of sub grid cell topographic variability. Our boundary conditions also include for the first time modelled estimates of Eocene aerosol distributions and tidal dissipation, both consistent with our palaeotopography and palaeobathymetry. The resolution of our data sets is 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 data sets should be considered as one interpretation of the available data and users are encouraged to modify them according to their needs and interpretations. This paper marks the beginning of a process for reconstructing a set of accurate, open-access Eocene boundary conditions for use in climate models.

Item Type: Article
Subjects: Research Publications
Departments: College of Natural Sciences > School of Ocean Sciences
Date Deposited: 29 Jan 2015 03:55
Last Modified: 19 Nov 2015 03:46
ISSN: 1991-959X
URI: http://e.bangor.ac.uk/id/eprint/3446
Identification Number: DOI: 10.5194/gmd-7-2077-2014
Publisher: Copernicus publications
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