Simulation of ocean temperature change due to the opening of Drake Passage

Giang T. Nong, Raymond G. Najjar, Dan Seidov, William H. Peterson

Research output: Contribution to journalArticlepeer-review

57 Scopus citations


An ocean general circulation model (GCM) is used to test the hypothesis that the opening of Drake Passage in the Oligocene may have lead to cooling in southern high latitudes. Results of previous studies show that no ocean models using restoring boundary conditions for the surface heat flux could reveal substantial southern high latitude cooling without prescribing atmospheric cooling a priori. To compute the surface heat flux that would be free from the restoring constraints we use another method, which is derived from an atmospheric energy balance model with lateral heat transport. In experiments conducted with both idealized and realistic topography the energy balance method produces substantial cooling not only in high latitudes but in deep waters as well.

Original languageEnglish (US)
Pages (from-to)2689-2692
Number of pages4
JournalGeophysical Research Letters
Issue number17
StatePublished - Sep 1 2000

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)


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