Journal ArticleDOI
How long to oceanic tracer and proxy equilibrium
Carl Wunsch,Patrick Heimbach +1 more
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In this paper, a global ocean circulation model, forced to least-square consistency with modern data, is used to find lower bounds for the time taken by surface-injected passive tracers to reach equilibrium.About:
This article is published in Quaternary Science Reviews.The article was published on 2008-04-01. It has received 90 citations till now. The article focuses on the topics: Thermohaline circulation & North Atlantic Deep Water.read more
Citations
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Fast Spin‐Up of Geochemical Tracers in Ocean Circulation and Climate Models
TL;DR: In this article , a spin-up approach is proposed to compute the equilibrium distribution of ocean geochemical tracers in seasonally-forced models, based on the Anderson acceleration technique developed in the 1960s to solve nonlinear integral equations.
Posted Content
Surrogate-based optimization using an artificial neural network for a parameter identification in a 3D marine ecosystem model
Markus Pfeil,Thomas Slawig +1 more
TL;DR: In this paper, a low-fidelity model is constructed from a less accurate but computationally cheaper model in combination with an appropriate correction approach, which improves the accuracy of the low-fiidelity model.
Posted ContentDOI
Adaptive time step algorithms for the simulation of marine ecosystem models using the transport matrix method implementation Metos3D (v0.5.0)
Markus Pfeil,Thomas Slawig +1 more
TL;DR: Different algorithms applying either an adaptive step size control or decreasing time steps in order to use the time step always as large as possible without any manual selection are presented.
Journal ArticleDOI
Influence of GEOTRACES data distribution and misfit function choice on objective parameter retrieval in a marine zinc cycle model
TL;DR: In this paper , the influence of data distribution, model uncertainty, and the misfit function on objective parameter optimisation in a model of the oceanic cycle of zinc (Zn), an essential micronutrient for marine phytoplankton with a long whole-ocean residence time, is assessed.
ReportDOI
U.S. GODAE: Sustained Global Ocean State Estimation for Scientific and Practical Application
Carl Wunsch,Ichiro Fukumori,Tong Lee,D. Menemenlis,David Behringer,Michele M. Rienecker,Rui M. Ponte +6 more
TL;DR: The Global Ocean State Estimation (GOSE) project as mentioned in this paper aims to establish, and to continually improve, a complete global ocean state estimation over the 21-plus-year period from 1985 to present, combining all available large-scale data sets with state-of-theart general circulation models.
References
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Journal ArticleDOI
The NCEP/NCAR 40-Year Reanalysis Project
Eugenia Kalnay,Masao Kanamitsu,Robert Kistler,William D. Collins,D.G. Deaven,L. S. Gandin,M. Iredell,Suranjana Saha,Glenn H. White,John S. Woollen,Yuejian Zhu,Muthuvel Chelliah,Wesley Ebisuzaki,Wayne Higgins,John E. Janowiak,Kingtse C. Mo,Chester F. Ropelewski,Julian X. L. Wang,Ants Leetmaa,Richard W. Reynolds,Roy L. Jenne,Dennis Joseph +21 more
TL;DR: The NCEP/NCAR 40-yr reanalysis uses a frozen state-of-the-art global data assimilation system and a database as complete as possible, except that the horizontal resolution is T62 (about 210 km) as discussed by the authors.
Book
Conduction of Heat in Solids
H. S. Carslaw,John Conrad Jaeger +1 more
TL;DR: In this paper, a classic account describes the known exact solutions of problems of heat flow, with detailed discussion of all the most important boundary value problems, including boundary value maximization.
Journal ArticleDOI
Oceanic vertical mixing: A review and a model with a nonlocal boundary layer parameterization
TL;DR: In this article, a new parameterization of oceanic boundary layer mixing is developed to accommodate some of this physics, including a scheme for determining the boundary layer depth h, where the turbulent contribution to the vertical shear of a bulk Richardson number is parameterized.
Journal ArticleDOI
Isopycnal mixing in ocean circulation models
TL;DR: In this paper, a subgrid-scale form for mesoscale eddy mixing on isopycnal surfaces is proposed for use in non-eddy-resolving ocean circulation models.
Journal ArticleDOI
A finite-volume, incompressible Navier Stokes model for studies of the ocean on parallel computers
TL;DR: A preconditioner is used which, in the hydrostatic limit, is an exact integral of the Poisson operator and so leads to a single algorithm that seamlessly moves from nonhydrostatic to hydrostatic limits, competitive with the fastest ocean climate models in use today.
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The Salinity, Temperature, and δ18O of the Glacial Deep Ocean
Glacial water mass geometry and the distribution of δ13C of ΣCO2 in the western Atlantic Ocean
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