Journal ArticleDOI
How long to oceanic tracer and proxy equilibrium
Carl Wunsch,Patrick Heimbach +1 more
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TLDR
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
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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
Feedback between deglaciation, volcanism, and atmospheric CO2
TL;DR: In this paper, an evaluation of the historical record of volcanic eruptions shows that subaerial volcanism increases globally by two to six times above background levels between 12-ka and 7-ka, during the last deglaciation.
Journal Article
Making sense of palaeoclimate sensitivity
Eelco J. Rohling,Appy Sluijs,Henk A. Dijkstra,Peter Köhler,R. S. W. van de Wal,A. S. von der Heydt,David J. Beerling,André Berger,Peter K. Bijl,M. Crucfix,Robert M. DeConto,Sybren Drijfhout,Alexey V. Fedorov,Gavin L. Foster,Andrey Ganopolski,James Hansen,Bärbel Hönisch,Henry Hooghiemstra,Matthew Huber,Peter Huybers,Reto Knutti,David W. Lea,Lucas Joost Lourens,Daniel J. Lunt,Valerie Masson-Delmotte,Martín Medina-Elizalde,Bette L. Otto-Bliesner,Mark Pagani,Heiko Pälike,Hans Renssen,Dana L. Royer,M. Siddall,Paul J. Valdes,James C Zachos,Richard E. Zeebe +34 more
TL;DR: This work presents a stricter approach to improve intercomparison of palaeoclimate sensitivity estimates in a manner compatible with equilibrium projections for future climate change, and reveals a climate sensitivity over the past 65 million years of 0.3–1.9 at 95% or 68% probability.
Journal ArticleDOI
Making sense of palaeoclimate sensitivity
Eelco J. Rohling,Appy Sluijs,Henk A. Dijkstra,Peter Köhler,R. S. W. van de Wal,A. S. von der Heydt,David J. Beerling,André Berger,Peter K. Bijl,Michel Crucifix +9 more
TL;DR: In this article, a stricter approach was proposed to improve intercomparison of palaeoclimate sensitivity estimates in a manner compatible with equilibrium projections for future climate change, which revealed a climate sensitivity (in K W -1 m 2) of 0.3-1.9 or 0.6 -1.3 at 95% or 68% probability, respectively.
Journal ArticleDOI
Eddy Saturation of Equilibrated Circumpolar Currents
TL;DR: In this paper, the authors used a sector configuration of an ocean general circulation model to examine the sensitivity of circumpolar transport and meridional overturning to changes in Southern Ocean wind stress and global diapycnal mixing.
References
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Journal ArticleDOI
Determining paleoceanographic circulations, with emphasis on the Last Glacial Maximum
TL;DR: In this article, the authors examined the North Atlantic Ocean circulation during the Last Glacial Maximum and showed that the circulation of mass is unlikely to correspond simply to circulation of heat or freshwater (salt).
Journal ArticleDOI
How fast did the ocean—atmosphere system run during the last deglaciation?
Jean-Claude Duplessy,Edouard Bard,Maurice Arnold,N.J. Shackleton,Josette Duprat,Laurent Labeyrie +5 more
TL;DR: Oxygen isotope analyses performed on planktonic and benthic foraminifera in four deep sea cores show that during the last deglaciation, the meltwater isotopic signal propagated almost instantaneously in the whole North Atlantic and in less than one millennia in the Pacific and Indian deep waters as discussed by the authors.
Journal ArticleDOI
The Ocean's Memory of the Atmosphere: Residence-Time and Ventilation-Rate Distributions of Water Masses
François Primeau,Mark Holzer +1 more
TL;DR: In this article, tracer-independent ventilation rates for overlapping entry and exit regions are investigated in the presence of mixing by mesoscale eddies, which are reasonably represented by diffusion.
Journal ArticleDOI
Transit-Time Distributions in a Global Ocean Model
Synte Peacock,Mathew Maltrud +1 more
TL;DR: In this article, a simulation of the ocean "transit-time distribution" (TTD) for global and regional ocean surface boundary conditions is presented based on a 5000-yr integration using the Parallel Ocean Program ocean general circulation model.
Book
Applied Mathematics in Hydrogeology
TL;DR: Conservation Equations Source Functions and Convolution Laplace and Hankel Transforms drawdown in Confined Aquifers Drawdown in unconfined aquifers Heat Transfer and Groundwater Flow Solute Transport Solving Ax=b Finite Element Analysis Inverse Problems Appendix: Notes on Equation Solving as discussed by the authors
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