Publication Abstracts

Sun and Bleck 2001

Sun, S., and R. Bleck, 2001: Atlantic thermohaline circulation and its response to increasing CO2 in a coupled atmosphere-ocean model. Geophys. Res. Lett., 28, 4223-4226, doi:10.1029/2001GL013325.

We discuss aspects of the Atlantic thermohaline circulation (THC) and its response to increased greenhouse gas concentration, using a coupled atmosphere-ocean general circulation model (AOGCM) whose oceanic component is a new hybrid-isopycnal model. Two 200-year model integrations are carried out — a control run assuming fixed atmospheric composition and a perturbation run assuming gradual doubling of CO2. We employ no flux corrections at the air-sea interface, nor do we spin up the ocean prior to coupling. The surface conditions in the control run stabilize after several decades. When doubling CO2 at the rate of 1% per year, the model responds with a 2°C increase in global mean surface temperature (SAT) after 200 years and a virtually unchanged Atlantic meridional overturning circulation. The latter is maintained by a salinity increase that counteracts the effect of global warming on the surface buoyancy.

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BibTeX Citation

@article{su02000x,
  author={Sun, S. and Bleck, R.},
  title={Atlantic thermohaline circulation and its response to increasing CO2 in a coupled atmosphere-ocean model},
  year={2001},
  journal={Geophys. Res. Lett.},
  volume={28},
  pages={4223--4226},
  doi={10.1029/2001GL013325},
}

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RIS Citation

TY  - JOUR
ID  - su02000x
AU  - Sun, S.
AU  - Bleck, R.
PY  - 2001
TI  - Atlantic thermohaline circulation and its response to increasing CO2 in a coupled atmosphere-ocean model
JA  - Geophys. Res. Lett.
VL  - 28
SP  - 4223
EP  - 4226
DO  - 10.1029/2001GL013325
ER  -

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