Dataset Information

Drivers and distribution of global ocean heat uptake over the last half century.

ABSTRACT: Since the 1970s, the ocean has absorbed almost all of the additional energy in the Earth system due to greenhouse warming. However, sparse observations limit our knowledge of where ocean heat uptake (OHU) has occurred and where this heat is stored today. Here, we equilibrate a reanalysis-forced ocean-sea ice model, using a spin-up that improves on earlier approaches, to investigate recent OHU trends basin-by-basin and associated separately with surface wind trends, thermodynamic properties (temperature, humidity and radiation) or both. Wind and thermodynamic changes each explain ~ 50% of global OHU, while Southern Ocean forcing trends can account for almost all of the global OHU. This OHU is enabled by cool sea surface temperatures and sensible heat gain when atmospheric thermodynamic properties are held fixed, while downward longwave radiation dominates when winds are fixed. These results address long-standing limitations in multidecadal ocean-sea ice model simulations to reconcile estimates of OHU, transport and storage.

SUBMITTER: Huguenin MF

PROVIDER: S-EPMC9452516 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature

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Drivers and distribution of global ocean heat uptake over the last half century.

Huguenin Maurice F MF Holmes Ryan M RM England Matthew H MH

Nature communications 20220907 1

Since the 1970s, the ocean has absorbed almost all of the additional energy in the Earth system due to greenhouse warming. However, sparse observations limit our knowledge of where ocean heat uptake (OHU) has occurred and where this heat is stored today. Here, we equilibrate a reanalysis-forced ocean-sea ice model, using a spin-up that improves on earlier approaches, to investigate recent OHU trends basin-by-basin and associated separately with surface wind trends, thermodynamic properties (temp ...[more]

PMID: 36071053

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Dataset Information

Drivers and distribution of global ocean heat uptake over the last half century.

Publications

Drivers and distribution of global ocean heat uptake over the last half century.

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