Quantifying climate feedbacks in polar regions

International audience The concept of feedback is key in assessing whether a perturbation to a system is amplified or damped by mechanisms internal to the system. In polar regions, climate dynamics are controlled by both radiative and non-radiative interactions between the atmosphere, ocean, sea ice...

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Published in:Nature Communications
Main Authors: Goosse, Hugues, Kay, Jennifer, Armour, Kyle, Bodas-Salcedo, Alejandro, Chepfer, Hélène, Docquier, David, Jonko, Alexandra, Kushner, Paul, Lecomte, Olivier, Massonnet, François, Park, Hyo-Seok, Pithan, Felix, Svensson, Gunilla, Vancoppenolle, Martin
Other Authors: Université Catholique de Louvain = Catholic University of Louvain (UCL), University of Colorado Boulder, University of Washington Seattle, Met Office Hadley Centre for Climate Change (MOHC), United Kingdom Met Office Exeter, Laboratoire de Météorologie Dynamique (UMR 8539) (LMD), Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Los Alamos National Laboratory (LANL), University of Toronto, Barcelona Supercomputing Center - Centro Nacional de Supercomputacion (BSC - CNS), Korea Institute of Geoscience and Mineral Resources, Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI), Stockholm University, Nucleus for European Modeling of the Ocean (NEMO R&D ), Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL), 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), FNRS (Grant agreement no. T.0007.14), Ministerio de Economía, Indistria y Competitividad (MINECO), National Science Foundation award OCE-1523641, NASA 15-CCST15-0025, Joint UK BEIS/Defra Met Office Hadley Centre Climate Programme (GA01101), Natural Sciences and Engineering Research Council of Canada's Canadian Sea Ice and Snow Evolution Network (see www.CanSISE.ca), European Project: 641727,H2020,H2020-SC5-2014-two-stage,PRIMAVERA(2015)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2018
Subjects:
Online Access:https://hal.sorbonne-universite.fr/hal-01801558
https://hal.sorbonne-universite.fr/hal-01801558/document
https://hal.sorbonne-universite.fr/hal-01801558/file/s41467-018-04173-0.pdf
https://doi.org/10.1038/s41467-018-04173-0
Description
Summary:International audience The concept of feedback is key in assessing whether a perturbation to a system is amplified or damped by mechanisms internal to the system. In polar regions, climate dynamics are controlled by both radiative and non-radiative interactions between the atmosphere, ocean, sea ice, ice sheets and land surfaces. Precisely quantifying polar feedbacks is required for a process-oriented evaluation of climate models, a clear understanding of the processes responsible for polar climate changes, and a reduction in uncertainty associated with model projections. This quantification can be performed using a simple and consistent approach that is valid for a wide range of feedbacks, offering the opportunity for more systematic feedback analyses and a better understanding of polar climate changes.