TY - JOUR T1 - Insights into spatial sensitivities of ice mass response to environmental change from the SeaRISE ice sheet modeling project II: Greenland JF - J. Geophys. Res. Y1 - 2013 A1 - Nowicki, Sophie A1 - Robert A. Bindschadler A1 - Abe-Ouchi, Ayako A1 - Andy Aschwanden A1 - E. Bueler A1 - Choi, Hyeungu A1 - Fastook, Jim A1 - Granzow, Glen A1 - Greve, Ralf A1 - Gutowski, Gail A1 - Herzfeld, Ute A1 - Jackson, Charles A1 - Jesse V Johnson A1 - Constantine Khroulev A1 - Larour, Eric A1 - Anders Levermann A1 - Lipscomb, William H. A1 - Maria A. Martin A1 - Morlighem, Mathieu A1 - Parizek, Byron R. A1 - David Pollard A1 - Stephen F. Price A1 - Ren, Diandong A1 - Eric Rignot A1 - Fuyuki Saito A1 - Tatsuru Sato A1 - Seddik, Hakime A1 - Seroussi, Helene A1 - Takahashi, Kunio A1 - Walker, Ryan A1 - Wang, Wei Li VL - 118 UR - http://doi.wiley.com/10.1002/jgrf.20076 ER - TY - JOUR T1 - Insights into spatial sensitivities of ice mass response to environmental change from the SeaRISE ice sheet modeling project I: Antarctica JF - J. Geophys. Res. Y1 - 2013 A1 - Nowicki, Sophie A1 - Robert A. Bindschadler A1 - Abe-Ouchi, Ayako A1 - Andy Aschwanden A1 - E. Bueler A1 - Choi, Hyeungu A1 - Fastook, Jim A1 - Granzow, Glen A1 - Greve, Ralf A1 - Gutowski, Gail A1 - Herzfeld, Ute A1 - Jackson, Charles A1 - Jesse V Johnson A1 - Constantine Khroulev A1 - Larour, Eric A1 - Anders Levermann A1 - Lipscomb, William H. A1 - Maria A. Martin A1 - Morlighem, Mathieu A1 - Parizek, Byron R. A1 - David Pollard A1 - Stephen F. Price A1 - Ren, Diandong A1 - Eric Rignot A1 - Fuyuki Saito A1 - Tatsuru Sato A1 - Seddik, Hakime A1 - Seroussi, Helene A1 - Takahashi, Kunio A1 - Walker, Ryan A1 - Wang, Wei Li VL - 118 UR - http://doi.wiley.com/10.1002/jgrf.20081 ER - TY - JOUR T1 - Results from the Ice-Sheet Model Intercomparison ProjectHeinrich Event INtercOmparison (ISMIP HEINO) JF - Journal of Glaciology Y1 - 2010 A1 - Calov, Reinhard A1 - Greve, Ralf A1 - Abe-Ouchi, Ayako A1 - E. Bueler A1 - Huybrechts, Philippe A1 - Jesse V Johnson A1 - Frank Pattyn A1 - David Pollard A1 - Ritz, Catherine A1 - Fuyuki Saito A1 - Tarasov, Lev AB - Results from the Heinrich Event INtercOmparison (HEINO) topic of the Ice-Sheet Model Intercomparison Project (ISMIP) are presented. ISMIP HEINO was designed to explore internal large-scale ice-sheet instabilities in different contemporary ice-sheet models. These instabilities are of interest because they are a possible cause of Heinrich events. A simplified geometry experiment reproduces the main characteristics of the Laurentide ice sheet, including the sedimented region over Hudson Bay and Hudson Strait. The model experiments include a standard run plus seven variations. Nine dynamic/thermodynamic ice-sheet models were investigated; one of these models contains a combination of the shallow-shelf (SSA) and shallow-ice approximation (SIA), while the remaining eight models are of SIA type only. Seven models, including the SIA-SSA model, exhibit oscillatory surges with a period of ∼1000 years for a broad range of parameters, while two models remain in a permanent state of streaming for most parameter settings. In a number of models, the oscillations disappear for high surface temperatures, strong snowfall and small sediment sliding parameters. In turn, low surface temperatures and low snowfall are favourable for the ice-surge cycles. We conclude that further improvement of ice-sheet models is crucial for adequate, robust simulations of cyclic large-scale instabilities. VL - 56 UR - http://www.ingentaconnect.com/content/igsoc/jog/2010/00000056/00000197/art00001 ER - TY - JOUR T1 - Benchmark experiments for higher-order and full Stokes ice sheet models (ISMIP-HOM) JF - The Cryosphere Y1 - 2008 A1 - Frank Pattyn A1 - Perichon, L. A1 - Andy Aschwanden A1 - Breuer, B. A1 - de Smedt, B. A1 - Gagliardini, O. A1 - Gudmundsson, G. H. A1 - Hindmarsh, R. C. A. A1 - Hubbard, A. L. A1 - Jesse V Johnson A1 - Kleiner, T. A1 - Konovalov, Y. A1 - Martin, C. A1 - Payne, A. J. A1 - David Pollard A1 - Stephen F. Price A1 - M Rückamp A1 - Fuyuki Saito A1 - Souček, O. A1 - Sugiyama, S. A1 - Zwinger, T. VL - 2 ER -