Journal ArticleDOI
Impact of uncertainties in the horizontal density gradient upon low resolution global ocean modelling
Reads0
Chats0
TLDR
In this article, it is shown that unresolved scales represent a major source of uncertainties in the computation of the large-scale horizontal density gradient from the large scale temperature and salinity fields, and that the effect of these uncertainties can be simulated using random processes to represent unresolved temperature fluctuations.About:
This article is published in Ocean Modelling.The article was published on 2013-06-01. It has received 70 citations till now. The article focuses on the topics: Temperature salinity diagrams & Geostrophic wind.read more
Citations
More filters
Journal ArticleDOI
Toward a stochastic parameterization of ocean mesoscale eddies
TL;DR: In this paper, a stochastic parameterization of ocean mesoscale eddies is constructed in order to account for the fluctuations in subgrid transport and to represent upscale turbulent cascades.
Journal ArticleDOI
Challenges and Prospects in Ocean Circulation Models
B. Fox-Kemper,Alistair Adcroft,Alistair Adcroft,Claus W. Böning,Eric P. Chassignet,Enrique N. Curchitser,Gokhan Danabasoglu,Carsten Eden,Matthew H. England,Rüdiger Gerdes,Rüdiger Gerdes,Richard J. Greatbatch,Stephen M. Griffies,Stephen M. Griffies,Robert Hallberg,Robert Hallberg,Emmanuel Hanert,Patrick Heimbach,Helene T. Hewitt,Christopher N. Hill,Yoshiki Komuro,Sonya Legg,Sonya Legg,Julien Le Sommer,Simona Masina,Simon J. Marsland,Simon J. Marsland,Simon J. Marsland,Stephen G. Penny,Stephen G. Penny,Fangli Qiao,Todd D. Ringler,Anne-Marie Tréguier,Hiroyuki Tsujino,Petteri Uotila,Stephen Yeager +35 more
TL;DR: In this article, the authors revisit the challenges and prospects for ocean circulation models following Griffies et al. (2010), and summarize new developments in ocean modeling, including: how new and existing observations can be used, what modeling challenges remain, and how simulations can also be used to support observations.
Coupled Data Assimilation for Integrated Earth System Analysis and Prediction: Goals, Challenges, and Recommendations
Stephen G. Penny,Santha Akella,Mark Buehner,Matthieu Chevallier,Francois Counillon,C. Draper,Sergey Frolov,Yosuke Fujii,Alicia Karspeck,Arun Kumar +9 more
TL;DR: In this paper, the authors identify fundamental issues for coupled data assimilation (CDA), such as gaps in science and limitations in forecasting systems, in order to provide guidance to the World Meteorological Organization (WMO) on how to facilitate more rapid progress internationally.
Journal ArticleDOI
Scale-aware deterministic and stochastic parametrizations of eddy-mean flow interaction
TL;DR: In this paper, the authors proposed an eddy parametrization based on a non-Newtonian stress which depends on the partially resolved scales and their variability, and tested two versions of the parameter, one deterministic and one stochastic, at coarse and eddy-permitting resolutions in a double gyre quasi-geostrophic model.
Journal ArticleDOI
Will high-resolution global ocean models benefit coupled predictions on short-range to climate timescales?
Helene T. Hewitt,Michael J. Bell,Eric P. Chassignet,Arnaud Czaja,David Ferreira,Stephen M. Griffies,Pat Hyder,Julie L. McClean,Adrian L. New,Malcolm J. Roberts +9 more
TL;DR: In this article, the benefits of increased ocean resolution in global coupled models, where the ocean component explicitly represents transient mesoscale eddies and narrow boundary currents, are discussed and a discussion of what processes can presently be parameterized in coupled models with coarse resolution non-eddying ocean models, and where parameterizations may fall short.
References
More filters
Journal ArticleDOI
Sequential data assimilation with a nonlinear quasi-geostrophic model using Monte Carlo methods to forecast error statistics
TL;DR: In this article, a new sequential data assimilation method is proposed based on Monte Carlo methods, a better alternative than solving the traditional and computationally extremely demanding approximate error covariance equation used in the extended Kalman filter.
Journal ArticleDOI
The global climatology of an interannually varying air–sea flux data set
William G. Large,Stephen Yeager +1 more
TL;DR: The air-sea fluxes of momentum, heat, freshwater and their components have been computed globally from 1948 to 2006 at frequencies ranging from 6-hourly to monthly as mentioned in this paper.
Journal ArticleDOI
Stochastic representation of model uncertainties in the ECMWF ensemble prediction system
TL;DR: In this paper, a stochastic representation of random error associated with parametrized physical processes is described, and its impact in the European Centre for Medium-Range Weather Forecasts Ensemble Prediction System (ECMWF EPS) is discussed.
Journal ArticleDOI
Variability of the Tropical Atlantic Ocean Simulated by a General Circulation Model with Two Different Mixed-Layer Physics
Bruno Blanke,Pascale Delecluse +1 more
TL;DR: In this article, a 1.5 turbulence closure model in an ocean general circulation model of the equatorial Atlantic is presented, where the eddy viscosity and diffusivity involved in the vertical mixing are defined as the product of a characteristic turbulent velocity and a characteristic mixing length.
Journal ArticleDOI
Impact of partial steps and momentum advection schemes in a global ocean circulation model at eddy-permitting resolution
Bernard Barnier,Gurvan Madec,Thierry Penduff,Jean-Marc Molines,Anne-Marie Tréguier,Julien Le Sommer,Aike Beckmann,Arne Biastoch,Claus W. Böning,Joachim Dengg,Corine Derval,Edmée Durand,Sergei K. Gulev,Elisabeth Rémy,Claude Talandier,Sébastien Theetten,Mathew Maltrud,Julie L. McClean,Beverly A. de Cuevas +18 more
TL;DR: In this article, a series of sensitivity tests were performed with a z-coordinate, global eddy-permitting (1/4°) ocean/sea-ice model (the ORCA-R025 model configuration developed for the DRAKKAR project) to evaluate the impact of recent state-of-the-art numerical schemes on model solutions.