Coordinated Ocean-ice Reference Experiments (COREs).

• Published in: Ocean Modelling
• Main Authors: Griffies, Stephen M., Biastoch, Arne, Böning, Claus W., Bryan, Frank, Danabasoglu, Gokhan, Chassignet, Eric P., England, Matthew H., Gerdes, Rüdiger, Haak, Helmuth, Hallberg, Robert W., Hazeleger, Wilco, Jungclaus, Johann, Large, William G., Madec, Gurvan, Pirani, Anna, Samuels, Bonita L., Scheinert, Markus, Gupta, Alex Sen, Severijns, Camiel A., Simmons, Harper L., Tréguier, Anne-Marie, Winton, Mike, Yeager, Stephen, Yin, Jianjun
• Other Authors: NOAA Geophysical Fluid Dynamics Laboratory (GFDL), National Oceanic and Atmospheric Administration (NOAA), Leibniz-Institut für Meereswissenschaften (IFM-GEOMAR), National Center for Atmospheric Research Boulder (NCAR), Center for Ocean-Atmospheric Prediction Studies (COAPS), Florida State University Tallahassee (FSU), Climate Change Research Centre Sydney (CCRC), University of New South Wales Sydney (UNSW), Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI), Max-Planck-Institut für Meteorologie (MPI-M), Max-Planck-Gesellschaft, Royal Netherlands Meteorological Institute (KNMI), Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-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 Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), International CLIVAR, Princeton University, International Arctic Research Center (IARC), University of Alaska Fairbanks (UAF), Laboratoire de physique des océans (LPO), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2009
• Subjects: World ocean; Circulation stability; Analysis diagnostics; Global ocean-ice modelling; Experimental design; Atmospheric forcing; Model comparison; [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography; Sea ice
• Online Access: https://hal.archives-ouvertes.fr/hal-00406612; https://doi.org/10.1016/j.ocemod.2008.08.007

International audience Coordinated Ocean-ice Reference Experiments (COREs) are presented as a tool to explore the behaviour of global ocean-ice models under forcing from a common atmospheric dataset. We highlight issues arising when designing coupled global ocean and sea ice experiments, such as difficulties formulating a consistent forcing methodology and experimental protocol. Particular focus is given to the hydrological forcing, the details of which are key to realizing simulations with stable meridional overturning circulations. The atmospheric forcing from [Large, W., Yeager, S., 2004. Diurnal to decadal global forcing for ocean and sea-ice models: the data sets and flux climatologies. NCAR Technical Note: NCAR/TN-460+STR. CGD Division of the National Center for Atmospheric Research] was developed for coupled-ocean and sea ice models. We found it to be suitable for our purposes, even though its evaluation originally focussed more on the ocean than on the sea-ice. Simulations with this atmospheric forcing are presented from seven global ocean-ice models using the CORE-I design (repeating annual cycle of atmospheric forcing for 500 years). These simulations test the hypothesis that global ocean-ice models run under the same atmospheric state produce qualitatively similar simulations. The validity of this hypothesis is shown to depend on the chosen diagnostic. The CORE simulations provide feedback to the fidelity of the atmospheric forcing and model configuration, with identification of biases promoting avenues for forcing dataset and/or model development.