EGUsphere EGUsphere EGUsphere EGUsphere Copernicus Publications Göttingen, Germany 10.5194/egusphere-2025-903 ESD Ideas: Extended net zero simulations are critical for informed decision making King Andrew D. https://orcid.org/0000-0001-9006-5745 1 2 Abram Nerilie J. https://orcid.org/0000-0003-1246-2344 1 3 AlastruĂ© de Asenjo Eduardo https://orcid.org/0000-0002-9720-0257 4 5 Ziehn Tilo https://orcid.org/0000-0001-9873-9775 6 ARC Centre of Excellence for the Weather of the 21st Century School of Geography, Earth and Atmospheric Sciences, University of Melbourne, Melbourne, Kulin nations, Australia Research School of Earth Sciences, The Australian National University, Ngunnawal country, Canberra ACT 2601, Australia Max Planck Institute for Meteorology, Hamburg, Germany Institute of Oceanography, Center for Earth System Research and Sustainability (CEN), University of Hamburg, Hamburg, Germany CSIRO Environment, Aspendale, Kulin nations, Australia 17 03 2025 2025 1 6 Copyright: © 2025 Andrew D. King et al. 2025 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/ This article is available from https://egusphere.copernicus.org/preprints/2025/egusphere-2025-903/ The full text article is available as a PDF file from https://egusphere.copernicus.org/preprints/2025/egusphere-2025-903/egusphere-2025-903.pdf

Climate changes under net zero emissions will take many centuries to play out, particularly in the Southern Hemisphere and in the ocean and cryosphere. New millennial-length Earth System Model simulations are required to better understand these committed changes and their dependence on delays in reaching net zero emissions.

 Australian Research Council CE230100012 SR200100008 Deutsche Forschungsgemeinschaft 390683824