The deep-ocean heat uptake in transient climate change

Boyin Huang, Peter H. Stone, Andrei P. Sokolov, Igor Kamenkovich

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The deep-ocean heat uptake (DOHU) in transient climate changes is studied using an ocean general circulation model (OGCM) and its adjoint. The model configuration consists of idealized Pacific and Atlantic basins. The model is forced with the anomalies of surface heat and freshwater fluxes from a global warming scenario with a coupled model using the same ocean configuration. In the global warming scenario, CO2 concentration increases 1% yr 1. The heat uptake calculated from the coupled model and from the adjoint are virtually identical, showing that the heat uptake by the OGCM is a linear process. After 70 yr the ocean heat uptake is almost evenly distributed within the layers above 200 m, between 200 and 700 m, and below 700 m (about 20 × 1022 J in each). The effect of anomalous surface freshwater flux on the DOHU is negligible. Analysis of the Coupled Model Intercomparison Project (CMIP-2) data for the same global warming scenario shows that qualitatively similar results apply to coupled atmosphere-ocean GCMs. The penetration of surface heat flux to the deep ocean in the OGCM occurs mainly in the North Atlantic and the Southern Ocean, since both the sensitivity of DOHU to the surface heat flux and the magnitude of anomalous surface heat flux are large in these two regions. The DOHU relies on the reduction of convection and Gent-McWilliams-Redi mixing in the North Atlantic, and the reduction of Gent-McWilliams-Redi mixing in the Southern Ocean.

Original languageEnglish (US)
Pages (from-to)1352-1363
Number of pages12
JournalJournal of Climate
Volume16
Issue number9
StatePublished - May 1 2003
Externally publishedYes

Fingerprint

climate change
ocean
general circulation model
heat flux
global warming
penetration
convection
anomaly
atmosphere
basin

ASJC Scopus subject areas

  • Atmospheric Science

Cite this

Huang, B., Stone, P. H., Sokolov, A. P., & Kamenkovich, I. (2003). The deep-ocean heat uptake in transient climate change. Journal of Climate, 16(9), 1352-1363.

The deep-ocean heat uptake in transient climate change. / Huang, Boyin; Stone, Peter H.; Sokolov, Andrei P.; Kamenkovich, Igor.

In: Journal of Climate, Vol. 16, No. 9, 01.05.2003, p. 1352-1363.

Research output: Contribution to journalArticle

Huang, B, Stone, PH, Sokolov, AP & Kamenkovich, I 2003, 'The deep-ocean heat uptake in transient climate change', Journal of Climate, vol. 16, no. 9, pp. 1352-1363.
Huang B, Stone PH, Sokolov AP, Kamenkovich I. The deep-ocean heat uptake in transient climate change. Journal of Climate. 2003 May 1;16(9):1352-1363.
Huang, Boyin ; Stone, Peter H. ; Sokolov, Andrei P. ; Kamenkovich, Igor. / The deep-ocean heat uptake in transient climate change. In: Journal of Climate. 2003 ; Vol. 16, No. 9. pp. 1352-1363.
@article{4d7428be37954073be262235285e8c9a,
title = "The deep-ocean heat uptake in transient climate change",
abstract = "The deep-ocean heat uptake (DOHU) in transient climate changes is studied using an ocean general circulation model (OGCM) and its adjoint. The model configuration consists of idealized Pacific and Atlantic basins. The model is forced with the anomalies of surface heat and freshwater fluxes from a global warming scenario with a coupled model using the same ocean configuration. In the global warming scenario, CO2 concentration increases 1{\%} yr 1. The heat uptake calculated from the coupled model and from the adjoint are virtually identical, showing that the heat uptake by the OGCM is a linear process. After 70 yr the ocean heat uptake is almost evenly distributed within the layers above 200 m, between 200 and 700 m, and below 700 m (about 20 × 1022 J in each). The effect of anomalous surface freshwater flux on the DOHU is negligible. Analysis of the Coupled Model Intercomparison Project (CMIP-2) data for the same global warming scenario shows that qualitatively similar results apply to coupled atmosphere-ocean GCMs. The penetration of surface heat flux to the deep ocean in the OGCM occurs mainly in the North Atlantic and the Southern Ocean, since both the sensitivity of DOHU to the surface heat flux and the magnitude of anomalous surface heat flux are large in these two regions. The DOHU relies on the reduction of convection and Gent-McWilliams-Redi mixing in the North Atlantic, and the reduction of Gent-McWilliams-Redi mixing in the Southern Ocean.",
author = "Boyin Huang and Stone, {Peter H.} and Sokolov, {Andrei P.} and Igor Kamenkovich",
year = "2003",
month = "5",
day = "1",
language = "English (US)",
volume = "16",
pages = "1352--1363",
journal = "Journal of Climate",
issn = "0894-8755",
publisher = "American Meteorological Society",
number = "9",

}

TY - JOUR

T1 - The deep-ocean heat uptake in transient climate change

AU - Huang, Boyin

AU - Stone, Peter H.

AU - Sokolov, Andrei P.

AU - Kamenkovich, Igor

PY - 2003/5/1

Y1 - 2003/5/1

N2 - The deep-ocean heat uptake (DOHU) in transient climate changes is studied using an ocean general circulation model (OGCM) and its adjoint. The model configuration consists of idealized Pacific and Atlantic basins. The model is forced with the anomalies of surface heat and freshwater fluxes from a global warming scenario with a coupled model using the same ocean configuration. In the global warming scenario, CO2 concentration increases 1% yr 1. The heat uptake calculated from the coupled model and from the adjoint are virtually identical, showing that the heat uptake by the OGCM is a linear process. After 70 yr the ocean heat uptake is almost evenly distributed within the layers above 200 m, between 200 and 700 m, and below 700 m (about 20 × 1022 J in each). The effect of anomalous surface freshwater flux on the DOHU is negligible. Analysis of the Coupled Model Intercomparison Project (CMIP-2) data for the same global warming scenario shows that qualitatively similar results apply to coupled atmosphere-ocean GCMs. The penetration of surface heat flux to the deep ocean in the OGCM occurs mainly in the North Atlantic and the Southern Ocean, since both the sensitivity of DOHU to the surface heat flux and the magnitude of anomalous surface heat flux are large in these two regions. The DOHU relies on the reduction of convection and Gent-McWilliams-Redi mixing in the North Atlantic, and the reduction of Gent-McWilliams-Redi mixing in the Southern Ocean.

AB - The deep-ocean heat uptake (DOHU) in transient climate changes is studied using an ocean general circulation model (OGCM) and its adjoint. The model configuration consists of idealized Pacific and Atlantic basins. The model is forced with the anomalies of surface heat and freshwater fluxes from a global warming scenario with a coupled model using the same ocean configuration. In the global warming scenario, CO2 concentration increases 1% yr 1. The heat uptake calculated from the coupled model and from the adjoint are virtually identical, showing that the heat uptake by the OGCM is a linear process. After 70 yr the ocean heat uptake is almost evenly distributed within the layers above 200 m, between 200 and 700 m, and below 700 m (about 20 × 1022 J in each). The effect of anomalous surface freshwater flux on the DOHU is negligible. Analysis of the Coupled Model Intercomparison Project (CMIP-2) data for the same global warming scenario shows that qualitatively similar results apply to coupled atmosphere-ocean GCMs. The penetration of surface heat flux to the deep ocean in the OGCM occurs mainly in the North Atlantic and the Southern Ocean, since both the sensitivity of DOHU to the surface heat flux and the magnitude of anomalous surface heat flux are large in these two regions. The DOHU relies on the reduction of convection and Gent-McWilliams-Redi mixing in the North Atlantic, and the reduction of Gent-McWilliams-Redi mixing in the Southern Ocean.

UR - http://www.scopus.com/inward/record.url?scp=0037592697&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037592697&partnerID=8YFLogxK

M3 - Article

VL - 16

SP - 1352

EP - 1363

JO - Journal of Climate

JF - Journal of Climate

SN - 0894-8755

IS - 9

ER -