Decadal prediction skill in the ocean with surface nudging in the IPSL-CM5A-LR climate model
International audience Two decadal prediction ensembles, based on the same climate model (IPSL-CM5A-LR) and the same surface nudging initialization strategy are analyzed and compared with a focus on upper-ocean variables in different regions of the globe. One ensemble consists of 3-member hindcasts...
Published in: | Climate Dynamics |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2016
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Subjects: | |
Online Access: | https://hal.sorbonne-universite.fr/hal-01390803 https://hal.sorbonne-universite.fr/hal-01390803/document https://hal.sorbonne-universite.fr/hal-01390803/file/Mignot_2016_Decadal_prediction.pdf https://doi.org/10.1007/s00382-015-2898-1 |
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ftuniversailles:oai:HAL:hal-01390803v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
Surface nudging Oceanic predictability Decadal variability [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
Surface nudging Oceanic predictability Decadal variability [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Mignot, Juliette García-Serrano, Javier Swingedouw, Didier Germe, Agathe Nguyen, Sébastien Ortega, Pablo Guilyardi, Éric Ray, Sulagna Decadal prediction skill in the ocean with surface nudging in the IPSL-CM5A-LR climate model |
topic_facet |
Surface nudging Oceanic predictability Decadal variability [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Two decadal prediction ensembles, based on the same climate model (IPSL-CM5A-LR) and the same surface nudging initialization strategy are analyzed and compared with a focus on upper-ocean variables in different regions of the globe. One ensemble consists of 3-member hindcasts launched every year since 1961 while the other ensemble benefits from 9 members but with start dates only every 5 years. Analysis includes anomaly correlation coefficients and root mean square errors computed against several reanalysis and gridded observational fields, as well as against the nudged simulation used to produce the hindcasts initial conditions. The last skill measure gives an upper limit of the predictability horizon one can expect in the forecast system, while the comparison with different datasets highlights uncertainty when assessing the actual skill. Results provide a potential prediction skill (verification against the nudged simulation) beyond the linear trend of the order of 10 years ahead at the global scale, but essentially associated with non-linear radiative forcings, in particular from volcanoes. At regional scale, we obtain 1 year in the tropical band, 10 years at midlatitudes in the North Atlantic and North Pacific, and 5 years at tropical latitudes in the North Atlantic, for both sea surface temperature (SST) and upper-ocean heat content. Actual prediction skill (verified against observational or reanalysis data) is overall more limited and less robust. Even so, large actual skill is found in the extratropical North Atlantic for SST and in the tropical to subtropical North Pacific for upper-ocean heat content. Results are analyzed with respect to the specific dynamics of the model and the way it is influenced by the nudging. The interplay between initialization and internal modes of variability is also analyzed for sea surface salinity. The study illustrates the importance of two key ingredients both necessary for the success of future coordinated decadal prediction exercises, a high ... |
author2 |
Processus de la variabilité climatique tropicale et impacts (PARVATI) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) 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)-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-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)-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)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-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)-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) Oeschger Centre for Climate Change Research (OCCR) Universität Bern / University of Bern (UNIBE) Climate and Environmental Physics Bern (CEP) Physikalisches Institut Bern Universität Bern / University of Bern (UNIBE)-Universität Bern / University of Bern (UNIBE) Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) NCAS-Climate Reading Department of Meteorology Reading University of Reading (UOR)-University of Reading (UOR) Atmospheric and Oceanic Sciences Program Princeton (AOS Program) NOAA Geophysical Fluid Dynamics Laboratory (GFDL) National Oceanic and Atmospheric Administration (NOAA)-National Oceanic and Atmospheric Administration (NOAA)-Princeton University European Project: 308378,EC:FP7:ENV,FP7-ENV-2012-two-stage,SPECS(2012) European Project: 308299,EC:FP7:ENV,FP7-ENV-2012-two-stage,NACLIM(2012) |
format |
Article in Journal/Newspaper |
author |
Mignot, Juliette García-Serrano, Javier Swingedouw, Didier Germe, Agathe Nguyen, Sébastien Ortega, Pablo Guilyardi, Éric Ray, Sulagna |
author_facet |
Mignot, Juliette García-Serrano, Javier Swingedouw, Didier Germe, Agathe Nguyen, Sébastien Ortega, Pablo Guilyardi, Éric Ray, Sulagna |
author_sort |
Mignot, Juliette |
title |
Decadal prediction skill in the ocean with surface nudging in the IPSL-CM5A-LR climate model |
title_short |
Decadal prediction skill in the ocean with surface nudging in the IPSL-CM5A-LR climate model |
title_full |
Decadal prediction skill in the ocean with surface nudging in the IPSL-CM5A-LR climate model |
title_fullStr |
Decadal prediction skill in the ocean with surface nudging in the IPSL-CM5A-LR climate model |
title_full_unstemmed |
Decadal prediction skill in the ocean with surface nudging in the IPSL-CM5A-LR climate model |
title_sort |
decadal prediction skill in the ocean with surface nudging in the ipsl-cm5a-lr climate model |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.sorbonne-universite.fr/hal-01390803 https://hal.sorbonne-universite.fr/hal-01390803/document https://hal.sorbonne-universite.fr/hal-01390803/file/Mignot_2016_Decadal_prediction.pdf https://doi.org/10.1007/s00382-015-2898-1 |
genre |
Arctic North Atlantic |
genre_facet |
Arctic North Atlantic |
op_source |
ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal.sorbonne-universite.fr/hal-01390803 Climate Dynamics, 2016, 47 (3), pp.1225-1246. ⟨10.1007/s00382-015-2898-1⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-015-2898-1 info:eu-repo/grantAgreement/EC/FP7/308378/EU/Seasonal-to-decadal climate Prediction for the improvement of EuropeanClimate Services/SPECS info:eu-repo/grantAgreement/EC/FP7/308299/EU/North Atlantic Climate: Predictability of the climate in the North Atlantic/European sector related to North Atlantic/Arctic sea surface temperature and sea ice variability and change/NACLIM hal-01390803 https://hal.sorbonne-universite.fr/hal-01390803 https://hal.sorbonne-universite.fr/hal-01390803/document https://hal.sorbonne-universite.fr/hal-01390803/file/Mignot_2016_Decadal_prediction.pdf doi:10.1007/s00382-015-2898-1 IRD: PAR00015072 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1007/s00382-015-2898-1 |
container_title |
Climate Dynamics |
container_volume |
47 |
container_issue |
3-4 |
container_start_page |
1225 |
op_container_end_page |
1246 |
_version_ |
1799471609246908416 |
spelling |
ftuniversailles:oai:HAL:hal-01390803v1 2024-05-19T07:33:32+00:00 Decadal prediction skill in the ocean with surface nudging in the IPSL-CM5A-LR climate model Mignot, Juliette García-Serrano, Javier Swingedouw, Didier Germe, Agathe Nguyen, Sébastien Ortega, Pablo Guilyardi, Éric Ray, Sulagna Processus de la variabilité climatique tropicale et impacts (PARVATI) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) 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)-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-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)-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)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-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)-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) Oeschger Centre for Climate Change Research (OCCR) Universität Bern / University of Bern (UNIBE) Climate and Environmental Physics Bern (CEP) Physikalisches Institut Bern Universität Bern / University of Bern (UNIBE)-Universität Bern / University of Bern (UNIBE) Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) NCAS-Climate Reading Department of Meteorology Reading University of Reading (UOR)-University of Reading (UOR) Atmospheric and Oceanic Sciences Program Princeton (AOS Program) NOAA Geophysical Fluid Dynamics Laboratory (GFDL) National Oceanic and Atmospheric Administration (NOAA)-National Oceanic and Atmospheric Administration (NOAA)-Princeton University European Project: 308378,EC:FP7:ENV,FP7-ENV-2012-two-stage,SPECS(2012) European Project: 308299,EC:FP7:ENV,FP7-ENV-2012-two-stage,NACLIM(2012) 2016 https://hal.sorbonne-universite.fr/hal-01390803 https://hal.sorbonne-universite.fr/hal-01390803/document https://hal.sorbonne-universite.fr/hal-01390803/file/Mignot_2016_Decadal_prediction.pdf https://doi.org/10.1007/s00382-015-2898-1 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-015-2898-1 info:eu-repo/grantAgreement/EC/FP7/308378/EU/Seasonal-to-decadal climate Prediction for the improvement of EuropeanClimate Services/SPECS info:eu-repo/grantAgreement/EC/FP7/308299/EU/North Atlantic Climate: Predictability of the climate in the North Atlantic/European sector related to North Atlantic/Arctic sea surface temperature and sea ice variability and change/NACLIM hal-01390803 https://hal.sorbonne-universite.fr/hal-01390803 https://hal.sorbonne-universite.fr/hal-01390803/document https://hal.sorbonne-universite.fr/hal-01390803/file/Mignot_2016_Decadal_prediction.pdf doi:10.1007/s00382-015-2898-1 IRD: PAR00015072 info:eu-repo/semantics/OpenAccess ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal.sorbonne-universite.fr/hal-01390803 Climate Dynamics, 2016, 47 (3), pp.1225-1246. ⟨10.1007/s00382-015-2898-1⟩ Surface nudging Oceanic predictability Decadal variability [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2016 ftuniversailles https://doi.org/10.1007/s00382-015-2898-1 2024-04-25T00:35:29Z International audience Two decadal prediction ensembles, based on the same climate model (IPSL-CM5A-LR) and the same surface nudging initialization strategy are analyzed and compared with a focus on upper-ocean variables in different regions of the globe. One ensemble consists of 3-member hindcasts launched every year since 1961 while the other ensemble benefits from 9 members but with start dates only every 5 years. Analysis includes anomaly correlation coefficients and root mean square errors computed against several reanalysis and gridded observational fields, as well as against the nudged simulation used to produce the hindcasts initial conditions. The last skill measure gives an upper limit of the predictability horizon one can expect in the forecast system, while the comparison with different datasets highlights uncertainty when assessing the actual skill. Results provide a potential prediction skill (verification against the nudged simulation) beyond the linear trend of the order of 10 years ahead at the global scale, but essentially associated with non-linear radiative forcings, in particular from volcanoes. At regional scale, we obtain 1 year in the tropical band, 10 years at midlatitudes in the North Atlantic and North Pacific, and 5 years at tropical latitudes in the North Atlantic, for both sea surface temperature (SST) and upper-ocean heat content. Actual prediction skill (verified against observational or reanalysis data) is overall more limited and less robust. Even so, large actual skill is found in the extratropical North Atlantic for SST and in the tropical to subtropical North Pacific for upper-ocean heat content. Results are analyzed with respect to the specific dynamics of the model and the way it is influenced by the nudging. The interplay between initialization and internal modes of variability is also analyzed for sea surface salinity. The study illustrates the importance of two key ingredients both necessary for the success of future coordinated decadal prediction exercises, a high ... Article in Journal/Newspaper Arctic North Atlantic Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Climate Dynamics 47 3-4 1225 1246 |