Impact of partial steps and momentum advection schemes in a global ocean circulation model at eddy-permitting resolution

Barnier, Bernard; Madec, Gurvan; Penduff, Thierry; Molines, Jean‐Marc; Tréguier, Anne‐Marie; Sommer, Julien Le; Beckmann, Aike; Biastoch, Arne; Böning, Claus W.; Dengg, Joachim; Derval, C.; Durand, Edmée; Gulev, Sergei K.; Rémy, E.; Talandier, Claude; Theetten, Sébastien; Maltrud, Mathew; McClean, Julie L.; Cuevas, Beverly de

doi:10.1007/s10236-006-0082-1

Cited by 528 publications

(294 citation statements)

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“…C-GLORSv7 covers the period from 1993 to 2016 and is being updated in delayed time mode, with a lag of approximately one year. The ocean model component of C-GLORSv7 is NEMO (Madec, 2008) version 3.6, which is implemented on the tripolar ORCA025 grid with Arakawa C-grid staggering and partial steps (Bernard et al, 2006). The resolution of the model allows eddies to be resolved approximately between 50° S and 50° N 15 (Penduff et al, 2010).…”

Section: C-glorsv7 10mentioning

confidence: 99%

Volume and temperature transports through the main Arctic Gateways: A comparative study between an ocean reanalysis and mooring-derived data

Pietschnig

Mayer

Tsubouchi

et al. 2017

Preprint

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Oceanic transports through the Arctic gateways represent an integral part of the polar climate system, but comprehensive insitu-based estimates of this quantity have been lacking in the past. New observation-based estimates of oceanic volume, 15 temperature and freshwater transports have recently become available. Those estimates have been derived from moored observations in the four major gateways by applying mass and salinity constraints. We seize this opportunity to compare a recent ocean reanalysis release with those observation-based estimates. First, time series of integrated volume and temperature transports through each strait are considered. Good agreement is found for Davis Strait volume transports, but considerable disagreement of up to 1.1 Sv in Fram Strait and the Barents Sea Opening. The annual mean net volume export through the 20 gateways is -0.03 ± 0.23 Sv in the reanalysis, weaker than the -0.15 ± 0.06 Sv derived from the observation-based estimate (uncertainties represent the monthly standard deviation). The net ocean heat transport to the Arctic Ocean is similar in the two datasets (observation-based: 153 ± 44 TW, reanalysis: 145 ± 35 TW). Discrepancies in the integrated transports are further investigated by studying cross-sections of velocity, temperature and temperature flux density. These reveal good qualitative agreement in all straits, but considerable differences in the strength of major features like the East Greenland Current and the 25 West Spitzbergen Current. Examination of the instrumental coverage reveals that areas of discrepancy are often co-located with poorly observed regions. In conclusion, both types of data sets have their merits and are recommended to be used complementarily for climate studies in this data-sparse region. We hope that the results presented in this study can assist in planning future observational efforts and in the development of ocean reanalysis products. 30Ocean Sci. Discuss., https://doi

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Section: C-glorsv7 10mentioning

confidence: 99%

Volume and temperature transports through the main Arctic Gateways: A comparative study between an ocean reanalysis and mooring-derived data

Pietschnig

Mayer

Tsubouchi

et al. 2017

Preprint

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“…This model setup is well covered in the literature (e.g. see Barnier et al, 2006;Barnier and the DRAKKAR Group, 2007, 2010 because it is the NEMO modelling framework that is now being used throughout Europe both for scientific and operational work (e.g. see Huck et al, 2008;Chanut et al, 2008;Lorbacher et al, 2010;Gary et al, 2011).…”

Section: Description Of the Model And Numerical Experimentsmentioning

confidence: 99%

“…The finerresolution model incorporates ocean eddies that may be important for the interannual variability of both the ocean heat transport (Volkov et al, 2008), and the AMOC (Biastoch et al, 2008;Kanzow et al, 2010;Hirschi et al, 2013). There is evidence from different model studies that the wave adjustment processes are usually faster in higher-resolution models (Döscher et al, 1994;Getzlaff et al, 2005;Roussenov et al, 2008;Zhang, 2010;Hodson and Sutton, 2012), probably due to an improved simulation of boundary (Döscher et al, 1994) and coastally trapped, (Wang and Mooers, 1976) waves, which can impact the propagation of AMOC anomalies.…”

Section: N Stepanov and K Haines: Mechanisms Of Amoc Variabilitymentioning

confidence: 99%

Mechanisms of Atlantic Meridional Overturning Circulation variability simulated by the NEMO model

Stepanov

Haines

2014

Ocean Sci.

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Abstract.We have investigated mechanisms for the Atlantic Meridional Overturning Circulation (AMOC) variability at 26.5 • N (other than the Ekman component) that can be related to external forcings, in particular wind variability. Resolution dependence is studied using identical experiments with 1 • and 1/4 • NEMO model runs over 1960-2010. The analysis shows that much of the variability in the AMOC at 26 • N can be related to the wind strength over the North Atlantic, through mechanisms lagged on different timescales. At ∼ 1-year lag the January-June difference of mean sea level pressure between high and mid-latitudes in the North Atlantic explains 35-50 % of the interannual AMOC variability (with negative correlation between wind strength and AMOC). At longer lead timescales ∼ 4 years, strong (weak) winds over the northern North Atlantic (specifically linked to the NAO index) are followed by higher (lower) AMOC transport, but this mechanism only works in the 1/4 • model. Analysis of the density correlations suggests an increase (decrease) in deep water formation in the North Atlantic subpolar gyre to be the cause. Therefore another 30 % of the AMOC variability at 26 • N can be related to density changes in the top 1000 m in the Labrador and Irminger seas occurring ∼ 4 years earlier.

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“…CCSM here referred to as the results obtained with the Ocean Model Component (POP) of the CCSM (Coupled Climate System Model) which is coupled to a sea-ice model (CICE) forced by CORE-II data, with 1°of horizontal resolution (COLLINS et al, 2006). ORCA05 and ORCA12 are also results from an ocean model (OPA) coupled to a sea-ice model (LIM) (BERNARD et al, 2006;MADEC, 2008;VANCOPPENOLLE et al, 2009). ORCA05 has 0.5°o f horizontal resolution and is also forced by CORE-II data while ORCA12 is a fully eddy-resolving simulation forced by the reanalysis E -Interim.…”

Section: Resultsmentioning

confidence: 99%

“…In D K R runs, the ocean componet OPA (Ocean Parallélisé) (DELECLUSE; IMBARD; LEVY, 1998) is coupled to a multilayer sea-ice model LIM (Louvain-la-Neuve Sea Ice Model) (FICHEFET; MAQUEDA, 1999; VAN-COPPENOLLE et al, 2009), using the quasi-isotropic global ORCA grid (for a be er description, see Bernard et al (2006)). …”

Section: Nucleus For European Modelling Of the Oceanmentioning

confidence: 99%

Indirect investigations of the Atlantic Meridional Overturning changes in the South Atlantic Ocean in numerical models for the 20th century

Signorelli¹

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Prof(a). Dr(a).Prof(a). Dr(a). Grade Grade Grade "O que sabemos é uma gota; o que ignoramos é um oceano."Isaac Newton (1642Newton ( -1727 À minha mãe e meu pai, pelo amor incondicional, pelo exemplo de vida e família. AcknowledgementsDois anos e meio depois e cá estou eu novamente tentando por em papel a imensa gratidão que eu sinto por cada um daqueles que contribuiram para que esse trabalho deixasse de ser apenas uma ideia... e fazer isso sem escrever demais e chorar demais. Danilo! Eu tive que separar um parágrafo especial pra você dessa vez (se bem que você merecia uma página toda!). Obrigada, meu amigo, por tudo. Pelo ombro amigo, pelo companheirismo, pelos chocolates nos dias ruins e principalmente, por me ensinar tanto! Nem posso acreditar na sorte que eu tive de ter você na minha turma, no mesmo lab... Essa dissertação não seria a mesma sem sua mente brilhante pra achar soluções rápidas para os meus problemas que sempre pareciam insolúveis. anks Anne-Marie and Julie. When I le Brazil, I could not expect to learn so much! is six months were a unforge able challenge. I have no words to say how grateful I am for this experience.Ma hew, Patri, Luz, Maribel, Nico... I'm so happy to have met you guys! My days in France would not be the same without you. Brest would be more gray and colder.Meus amigos campineiros, Mari, Naty, Cacá, Rafa... que me deixam com mais saudades do interior. E que me dão a segurança de que eu sempre vou ter abraços fortes, taças de vinho e muita risada sempre que quiser ou precisar voltar.Agradeço também à Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) que nanciou meus projetos e meus sonhos (processos 2010/13741-0 e 2012/12269-1) e tornou a realização desse trabalho possível.Por m, a todos aqueles que de uma maneira ou de outra me ajudaram a construir esse trabalho e a passar por essa etapa da minha vida, meu eterno e sincero obrigada.

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Impact of partial steps and momentum advection schemes in a global ocean circulation model at eddy-permitting resolution

Abstract: http://www.springerlink.com/content/w8327463321564n3/fulltext.htm

Cited by 528 publications

References 52 publications

Volume and temperature transports through the main Arctic Gateways: A comparative study between an ocean reanalysis and mooring-derived data

Volume and temperature transports through the main Arctic Gateways: A comparative study between an ocean reanalysis and mooring-derived data

Mechanisms of Atlantic Meridional Overturning Circulation variability simulated by the NEMO model

Indirect investigations of the Atlantic Meridional Overturning changes in the South Atlantic Ocean in numerical models for the 20th century

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