Description and evaluation of the Community Ice Sheet Model (CISM) v2.1
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Published:2019-01-22
Issue:1
Volume:12
Page:387-424
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ISSN:1991-9603
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Container-title:Geoscientific Model Development
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language:en
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Short-container-title:Geosci. Model Dev.
Author:
Lipscomb William H., Price Stephen F.ORCID, Hoffman Matthew J.ORCID, Leguy Gunter R.ORCID, Bennett Andrew R.ORCID, Bradley Sarah L., Evans Katherine J.ORCID, Fyke Jeremy G., Kennedy Joseph H.ORCID, Perego Mauro, Ranken Douglas M., Sacks William J., Salinger Andrew G., Vargo Lauren J.ORCID, Worley Patrick H.
Abstract
Abstract. We describe and evaluate version 2.1 of the Community Ice Sheet Model (CISM).
CISM is a parallel, 3-D thermomechanical model, written mainly in Fortran,
that solves equations for the momentum balance and the thickness and
temperature evolution of ice sheets. CISM's velocity solver incorporates a
hierarchy of Stokes flow approximations, including shallow-shelf,
depth-integrated higher order, and 3-D higher order. CISM also includes a
suite of test cases, links to third-party solver libraries, and
parameterizations of physical processes such as basal sliding, iceberg
calving, and sub-ice-shelf melting. The model has been verified for standard
test problems, including the Ice Sheet Model Intercomparison Project for
Higher-Order Models (ISMIP-HOM) experiments, and has participated in the
initMIP-Greenland initialization experiment. In
multimillennial simulations with modern climate forcing on a 4 km grid, CISM
reaches a steady state that is broadly consistent with observed flow patterns
of the Greenland ice sheet. CISM has been integrated into version 2.0 of the
Community Earth System Model, where it is being used for Greenland
simulations under past, present, and future climates. The code is open-source
with extensive documentation and remains under active development.
Funder
Office of Science National Science Foundation
Publisher
Copernicus GmbH
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