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Impact of geothermal heating on the global ocean circulation

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GRL-28-2001-1735.pdf
(Verlagsversion), 202KB

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Zitation

Adcroft, A., Scott, J., & Marotzke, J. (2001). Impact of geothermal heating on the global ocean circulation. Geophysical Research Letters, 28(9), 1735-1738. doi:10.1029/2000GL012182.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0014-1898-9
Zusammenfassung
The response of a global circulation model to a uniform geothermal heat flux of 50 mW m(-2) through the sea floor is examined. If the geothermal heat input were transported upward purely by diffusion, the deep ocean would warm by 1.2 degreesC. However, geothermal heating induces a substantial change in the deep circulation which is larger than previously assumed and subsequently the warming of the deep ocean is only a quarter of that suggested by the diffusive limit. The numerical ocean model responds most strongly in the Indo-Pacific with an increase in meridional overturning of 1.8 Sv, enhancing the existing overturning by approximately; 25%.