Publication Abstracts

Peteet 2001

Peteet, D.M., 2001: Late glacial climate variability GCM modeling experiments: An overview. In Interhemispheric Climate Linkages. V. Markgraf, Ed., Academic Press, pp. 417-432, doi:10.1016/B978-012472670-3/50025-2.

This chapter attempts to provide an overview of general circulation model (GCM) experiments for the late glacial period, a time of rapid climate variability. Two basic approaches to modeling the late glacial climate involve the time slice approach and the sensitivity test approach. The time slice approach attempts to model a particular past climate interval using a set of multiple boundary conditions (forcing parameters), while the sensitivity test approach isolates the effect of one boundary condition at a time for a particular time interval. Examples are given for each approach, including studies of various forcing parameters such as changes in insolation, ice sheets, sea surface temperature (SST), ocean transports, and CO2. Despite the use of different atmospheric general circulation models (AGCMs), including the National Center for Atmospheric Research (NCAR), Geophysical Fluid Dynamics Laboratory (GFDL), Goddard Institute for Space Studies (GISS), and European Community Hamburg Model Version 3 (ECHAM3), there are similarities in the various model responses to forcing parameters, such as insolation and land ice at 12,000 B.P. (all dates are given as calendar years, except when stated differently). With other forcing parameters, i.e., SST and sea ice, the results are not comparable from model to model because duplicate experiments have not been made with different models. Recent focus on coupled ocean-atmosphere GCMs provides new tools for exploring ocean-atmosphere links. A key question emerges as to just how important ocean circulation changes are in affecting global late glacial climate changes. Just how important is lowered CO2? How are the Northern and Southern Hemisphere climate responses linked? The iterative process of data-model comparison and the development of new questions are essential to this pursuit.

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BibTeX Citation

  author={Peteet, D. M.},
  editor={Markgraf, V.},
  title={Late glacial climate variability GCM modeling experiments: An overview},
  booktitle={Interhemispheric Climate Linkages},
  publisher={Academic Press},
  address={San Diego},

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RIS Citation

ID  - pe01100t
AU  - Peteet, D. M.
ED  - Markgraf, V.
PY  - 2001
TI  - Late glacial climate variability GCM modeling experiments: An overview
BT  - Interhemispheric Climate Linkages
SP  - 417
EP  - 432
DO  - 10.1016/B978-012472670-3/50025-2
PB  - Academic Press
CY  - San Diego
ER  -

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