Comments on “Diathermal Heat Transport in a Global Ocean Model”

Hochet, Antoine; Tailleux, Rémi

doi:10.1175/jpo-d-19-0055.1

Cited by 6 publications

(8 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The volume (our study will be performed in the context of incompressible Boussinesq model simulations; if the fluid were instead compressible then it would be more appropriate to consider the mass rather than volume (Hochet & Tailleux, 2019;Holmes et al, 2019b)) of this region is…”

Section: Internal Heat Contentmentioning

confidence: 99%

Atlantic Ocean Heat Transport Enabled by Indo‐Pacific Heat Uptake and Mixing

Holmes

Zika

Ferrari

et al. 2019

Geophysical Research Letters

View full text Add to dashboard Cite

The ocean transports vast amounts of heat around the planet, helping to regulate regional climate. One important component of this heat transport is the movement of warm water from equatorial regions toward the poles, with colder water flowing in return. Here, we introduce a framework relating meridional heat transport to the diabatic processes of surface forcing and turbulent mixing that move heat across temperature classes. Applied to a (1/4) • global ocean model the framework highlights the role of the tropical Indo-Pacific in the global ocean heat transport. A large fraction of the northward heat transport in the Atlantic is ultimately sourced from heat uptake in the eastern tropical Pacific. Turbulent mixing moves heat from the warm, shallow Indo-Pacific circulation to the cold deeper-reaching Atlantic circulation. Our results underscore a renewed focus on the tropical oceans and their role in global circulation pathways.

show abstract

Section: Internal Heat Contentmentioning

confidence: 99%

Atlantic Ocean Heat Transport Enabled by Indo‐Pacific Heat Uptake and Mixing

Holmes

Zika

Ferrari

et al. 2019

Geophysical Research Letters

View full text Add to dashboard Cite

show abstract

“…In this note we have partly reconciled the terms of discrepancy on volume or mass transport appearing in two recent notes by proving that the integral expressions in Hochet and Tailleux (2019), using a particular parameterization of the moving surfaces in Cartesian coordinates, correspond to the mass transport across the moving surfaces, as long as the mass density is included, as given in direct vector notation by Holmes et al (2019b).…”

Section: Discussionmentioning

confidence: 72%

Comments on the Recent Discussion Concerning the Article “Diathermal Heat Transport in a Global Ocean Model”

Viúdez

2020

Journal of Physical Oceanography

View full text Add to dashboard Cite

A 2019 comment by Hochet and Tailleux and the corresponding reply by Holmes et al. discuss the volume and mass balance on a control volume bounded by a given isotherm and the ocean free surface. This note partly reconciles the terms of discrepancy on volume or mass transport appearing in these publications by proving that the integral expressions in the comment of Hochet and Tailleux, using a particular parameterization of the moving surfaces in Cartesian coordinates, correspond to the mass transport across the moving surfaces, as long as the mass density is included, as given in direct vector notation by Holmes et al. in their reply.

show abstract

“…and R respectively the evaporation precipitation and river run-off is discussed in details in [8] and described briefly in appendix B. Using Eqs.…”

Section: Methodsmentioning

confidence: 99%

Global Heat Balance and Heat Uptake in Potential Temperature Coordinates

Hochet

Tailleux

Kuhlbrodt

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

The representation of ocean heat uptake in Simple Climate Models used for policy advice on climate change mitigation strategies is often based on variants of the one-dimensional Vertical Advection/Diffusion equation (VAD) for some averaged form of potential temperature. In such models, the effective advection and turbulent diffusion are usually tuned to emulate the behaviour of a given target climate model. However, because the statistical nature of such a \behavioural" calibration usually obscures the exact dependence of the effective diffusion and advection on the actual physical processes responsible for ocean heat uptake, it is difficult to understand its limitations and how to go about improving VAD. This paper proposes a physical calibration of the VAD that aims to provide explicit traceability of effective diffusion and advection to the processes responsible for ocean heat uptake. This construction relies on the coarse-graining of the full three-dimensional advection diffusion for potential temperature using potential temperature coordinates. The main advantage of this formulation is that the temporal evolution of the reference temperature profile is entirely due to the competition between effective diffusivity that is always positive definite, and the water mass transformation taking place at the surface, as in classical water mass analyses literature. These quantities are evaluated in numerical simulations of present day climate and global warming experiments. In this framework, the heat uptake in the global warming experiment is attributed to the increase of surface heat flux at low latitudes, its decrease at high latitudes and to the redistribution of heat toward cold temperatures made by diffusive flux.

show abstract

Comments on “Diathermal Heat Transport in a Global Ocean Model”

Cited by 6 publications

References 6 publications

Atlantic Ocean Heat Transport Enabled by Indo‐Pacific Heat Uptake and Mixing

Atlantic Ocean Heat Transport Enabled by Indo‐Pacific Heat Uptake and Mixing

Comments on the Recent Discussion Concerning the Article “Diathermal Heat Transport in a Global Ocean Model”

Global Heat Balance and Heat Uptake in Potential Temperature Coordinates

Contact Info

Product

Resources

About