edu.ucar.opensky::articles:23634 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-25T15:03:35.226600 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7q52svv https://doi.org/10.22033/ESGF/CMIP6.2461 https Related Dataset #1 ECMWF ECMWF-IFS-HR model output prepared for CMIP6 HighResMIP https://doi.org/10.22033/ESGF/CMIP6.1367 https Related Dataset #2 CMCC CMCC-CM2-VHR4 model output prepared for CMIP6 HighResMIP https://doi.org/10.22033/ESGF/CMIP6.2463 https Related Dataset #3 ECMWF ECMWF-IFS-LR model output prepared for CMIP6 HighResMIP https://doi.org/10.22033/ESGF/CMIP6.10290 https Related Dataset #4 MPI-M MPI-ESM1.2-XR model output prepared for CMIP6 HighResMIP https://doi.org/10.22033/ESGF/CMIP6.1359 https Related Dataset #5 CMCC CMCC-CM2-HR4 model output prepared for CMIP6 HighResMIP https://doi.org/10.22033/ESGF/CMIP6.762 https Related Dataset #6 MPI-M MPIESM1.2-HR model output prepared for CMIP6 HighResMIP https://doi.org/10.22033/ESGF/CMIP6.1824 https Related Dataset #7 NERC HadGEM3-GC31-HM model output prepared for CMIP6 HighResMIP https://doi.org/10.5285/5acfd143-1104-7b58-e053-6c86abc0d94b https Related Dataset #8 Atlantic meridional overturning circulation observed by the RAPID-MOCHA-WBTS (RAPID-Meridional Overturning Circulation and Heatflux Array-Western Boundary Time Series) array at 26N from 2004 to 2017. Sensitivity of the Atlantic Meridional Overturning Circulation to model resolution in CMIP6 HighResMIP simulations and implications for future changes 2020-08-08T00:00:00Z publication https://n2t.org/ark:/85065/d7q52svv https://doi.org/10.1029/2019MS002014 Roberts, M. J. author Jackson, L. C. author Roberts, C. D. author Meccia, V. author Docquier, D. author Koenigk, T. author Ortega, P. author Moreno-Chamarro, E. author Bellucci, A. author Coward, A. author Drijfhout, S. author Exarchou, E. author Gutjahr, O. author Hewitt, H. author Iovino, D. author Lohmann, K. author Putrasahan, D. author Schiemann, R. author Seddon, J. author Terray, L. author Xu, X. author Zhang, Q. author Chang, P. author Yeager, Stephen author Castruccio, Frederic author Zhang, S. author Wu, L. author UCAR/NCAR - Library publisher A multimodel, multiresolution ensemble using Coupled Model Intercomparison Project Phase 6 (CMIP6) High Resolution Model Intercomparison Project (HighResMIP) coupled experiments is used to assess the performance of key aspects of the North Atlantic circulation. The Atlantic Meridional Overturning Circulation (AMOC), and related heat transport, tends to become stronger as ocean model resolution is enhanced, better agreeing with observations at 26.5 degrees N. However, for most models the circulation remains too shallow compared to observations and has a smaller temperature contrast between the northward and southward limbs of the AMOC. These biases cause the northward heat transport to be systematically too low for a given overturning strength. The higher-resolution models also tend to have too much deep mixing in the subpolar gyre. In the period 2015-2050 the overturning circulation tends to decline more rapidly in the higher-resolution models, which is related to both the mean state and to the subpolar gyre contribution to deep water formation. The main part of the decline comes from the Florida Current component of the circulation. Such large declines in AMOC are not seen in the models with resolutions more typically used for climate studies, suggesting an enhanced risk for Northern Hemisphere climate change. However, only a small number of different ocean models are included in the study. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. None eng geoscientificInformation