Design and results of the ice sheet model initialisation experiments initMIP-Greenland: an ISMIP6 intercomparison

Autor: Roderik S. W. van de Wal, Joseph H. Kennedy, Andy Aschwanden, Sophie Nowicki, Tamsin L. Edwards, Reinhard Calov, Jonathan M. Gregory, Ralf Greve, Helene Seroussi, Heiko Goelzer, Eric Larour, Andrew Shepherd, Nicholas R. Golledge, Angelika Humbert, Frank Pattyn, Sainan Sun, Martin Rückamp, Philippe Huybrechts, Ayako Abe-Ouchi, Florian Ziemen, Victoria Lee, Nicole Schlegel, Matthew Beckley, Fuyuki Saito, Antony J. Payne, William H. Lipscomb, Olivier Gagliardini, Fabien Gillet-Chaulet, Mathieu Morlighem, Sébastien Le clec'h, Christian Rodehacke
Přispěvatelé: Center for Climate System Research [Kashiwa] ( CCSR ), The University of Tokyo, Laboratoire de glaciologie et géophysique de l'environnement ( LGGE ), Observatoire des Sciences de l'Univers de Grenoble ( OSUG ), Université Joseph Fourier - Grenoble 1 ( UJF ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Grenoble Alpes ( UGA ) -Université Joseph Fourier - Grenoble 1 ( UJF ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Grenoble Alpes ( UGA ) -Centre National de la Recherche Scientifique ( CNRS ), EDGe, Université Joseph Fourier - Grenoble 1 ( UJF ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Grenoble Alpes ( UGA ) -Université Joseph Fourier - Grenoble 1 ( UJF ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Grenoble Alpes ( UGA ) -Centre National de la Recherche Scientifique ( CNRS ) -Observatoire des Sciences de l'Univers de Grenoble ( OSUG ), Jet Propulsion Laboratory ( JPL ), NASA-California Institute of Technology ( CALTECH ), University of California [Irvine] ( UCI ), Université Libre de Bruxelles [Bruxelles] ( ULB ), Laboratoire de mécanique des sols, structures et matériaux ( MSSMat ), CentraleSupélec-Centre National de la Recherche Scientifique ( CNRS ), School of Earth and Environment [Leeds] ( SEE ), University of Leeds, Institute for Marine and Atmospheric Research [Utrecht] ( IMAU ), Utrecht University [Utrecht], Center for Climate System Research [Kashiwa] (CCSR), The University of Tokyo (UTokyo), Institut des Géosciences de l’Environnement (IGE), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Recherche pour le Développement (IRD)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), University of California [Irvine] (UCI), University of California, Université libre de Bruxelles (ULB), Laboratoire de mécanique des sols, structures et matériaux (MSSMat), CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), School of Earth and Environment [Leeds] (SEE), Institute for Marine and Atmospheric Research [Utrecht] (IMAU), Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), University of California [Irvine] (UC Irvine), University of California (UC)
Jazyk: angličtina
Rok vydání: 2018
Předmět:
[ SDU.OCEAN ] Sciences of the Universe [physics]/Ocean
Atmosphere
010504 meteorology & atmospheric sciences
F700
Greenland ice sheet
F800
Forcing (mathematics)
010502 geochemistry & geophysics
Oceanography
01 natural sciences
Article
Physical Geography and Environmental Geoscience
Glacier mass balance
Phase (matter)
[ SDU.ENVI ] Sciences of the Universe [physics]/Continental interfaces
environment
Cryosphere
Meteorology & Atmospheric Sciences
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces
environment
ComputingMilieux_MISCELLANEOUS
0105 earth and related environmental sciences
Earth-Surface Processes
Water Science and Technology
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
geography
Coupled model intercomparison project
geography.geographical_feature_category
Glacier and Ice Sheet Research
Ice-sheet model
Climate Action
Climatology
Ice sheet
Geology
Zdroj: The Cryosphere
The Cryosphere, Copernicus 2018, 12 (4), pp.1433-1460. 〈10.5194/tc-12-1433-2018〉
The cryosphere, vol 12, iss 4
Cryosphere
The Cryosphere, Copernicus 2018, 12 (4), pp.1433-1460. ⟨10.5194/tc-12-1433-2018⟩
The Cryosphere, 2018, 12 (4), pp.1433-1460. ⟨10.5194/tc-12-1433-2018⟩
The Cryosphere, 12 (4). pp. 1433-1460.
ISSN: 1994-0424
1994-0416
DOI: 10.5194/tc-12-1433-2018〉
Popis: Earlier large-scale Greenland ice sheet sea-level projections (e.g. those run during the ice2sea and SeaRISE initiatives) have shown that ice sheet initial conditions have a large effect on the projections and give rise to important uncertainties. The goal of this initMIP-Greenland intercomparison exercise is to compare, evaluate, and improve the initialisation techniques used in the ice sheet modelling community and to estimate the associated uncertainties in modelled mass changes. initMIP-Greenland is the first in a series of ice sheet model intercomparison activities within ISMIP6 (the Ice Sheet Model Intercomparison Project for CMIP6), which is the primary activity within the Coupled Model Intercomparison Project Phase 6 (CMIP6) focusing on the ice sheets. Two experiments for the large-scale Greenland ice sheet have been designed to allow intercomparison between participating models of (1) the initial present-day state of the ice sheet and (2) the response in two idealised forward experiments. The forward experiments serve to evaluate the initialisation in terms of model drift (forward run without additional forcing) and in response to a large perturbation (prescribed surface mass balance anomaly); they should not be interpreted as sea-level projections. We present and discuss results that highlight the diversity of data sets, boundary conditions, and initialisation techniques used in the community to generate initial states of the Greenland ice sheet. We find good agreement across the ensemble for the dynamic response to surface mass balance changes in areas where the simulated ice sheets overlap but differences arising from the initial size of the ice sheet. The model drift in the control experiment is reduced for models that participated in earlier intercomparison exercises.
Databáze: OpenAIRE
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