Authors

Sophie Nowicki, NASA Goddard Space Flight Center, Greenbelt, Maryland
Robert A. Bindschadler, NASA Goddard Space Flight Center, Greenbelt, MarylandFollow
Ayako Abe-Ouchi, University of Tokyo - Kashiwa, Chiba, JapanFollow
Andy Aschwanden, University of Alaska Fairbanks, Fairbanks, AlaskaFollow
Ed Bueler, University of Alaska, Fairbanks, AlaskaFollow
Hyeungu Choi, Sigma Space Corporation, Lanham, Maryland
Jim Fastook, University of Maine, Orono, Maine
Glen Granzow, University of Montana - MissoulaFollow
Ralf Greve, Hokkaido University, Sapporo, JapanFollow
Gail Gutowski, University of Texas at Austin, Austin, TexasFollow
Ute Herzfeld, University of Colorado, Boulder, Colorado
Charles Jackson, University of Texas at Austin, Austin, TexasFollow
Jesse Johnson, University of Montana - MissoulaFollow
Constantine Khroulev, University of Alaska, Fairbanks, AlaskaFollow
Eric Larour, California Institute of Technology, Pasadena, California
Anders Levermann, Potsdam University, Potsdam, Germany
William Lipscomb, Los Alamos National Laboratory, Los Alamos, New MexicoFollow
Maria A. Martin, Potsdam University, Potsdam, GermanyFollow
Mathieu Morlighem, University of California - Irvine, Irvine, CaliforniaFollow
Byron R. Parizek, Penn State DuBois, Dubois, PennsylvaniaFollow
David Pollard, Pennsylvania State University - University Park, PAFollow
Stephen Price, Los Alamos National Laboratory, Los Alamos, New MexicoFollow
Diandong Ren, Curtin University of Technology, Perth, Western Australia, AustraliaFollow
Eric Rignot, California Institute of Technology, Pasadena, California
Fuyuki Saito, Japan Agency for Marine-Earth Science and Technology, Yokohama, JapanFollow
Tatsuru Sato, Hokkaido University, Sapporo, Japan
Hakime Seddik, Hokkaido University, Sapporo, Japan
Helene Seroussi, California Institute of Technology, Pasadena, California
Kunio Takahashi, Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan
Ryan Walker, NASA Goddard Space Flight Center, Greenbelt, MarylandFollow
Wei Li Wang, NASA Goddard Space Flight Center, Greenbelt, MarylandFollow

Document Type

Article

Publication Title

Journal of Geophysical Research : Earth Surface

Publisher

American Geophysical Union

Publication Date

6-10-2013

Volume

118

Disciplines

Computer Sciences

Abstract

The Sea-level Response to Ice Sheet Evolution (SeaRISE) effort explores the sensitivity of the current generation of ice sheet models to external forcing to gain insight into the potential future contribution to sea level from the Greenland and Antarctic ice sheets. All participating models simulated the ice sheet response to three types of external forcings: a change in oceanic condition, a warmer atmospheric environment, and enhanced basal lubrication. Here an analysis of the spatial response of the Greenland ice sheet is presented, and the impact of model physics and spin-up on the projections is explored. Although the modeled responses are not always homogeneous, consistent spatial trends emerge from the ensemble analysis, indicating distinct vulnerabilities of the Greenland ice sheet. There are clear response patterns associated with each forcing, and a similar mass loss at the full ice sheet scale will result in different mass losses at the regional scale, as well as distinct thickness changes over the ice sheet. All forcings lead to an increased mass loss for the coming centuries, with increased basal lubrication and warmer ocean conditions affecting mainly outlet glaciers, while the impacts of atmospheric forcings affect the whole ice sheet.

Keywords

ice sheets, climate change

DOI

10:1002/jgrf.20076

Rights

© 2013. American Geophysical Union

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