Mathematics – Logic
Scientific paper
Feb 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30d..33r&link_type=abstract
Geophysical Research Letters, Volume 30, Issue 4, pp. 33-1, CiteID 1184, DOI 10.1029/2002GL016636
Mathematics
Logic
17
Meteorology And Atmospheric Dynamics: Paleoclimatology, Meteorology And Atmospheric Dynamics: Land/Atmosphere Interactions, Global Change: Climate Dynamics (3309), Oceanography: General: Numerical Modeling, Information Related To Geographic Region: Africa
Scientific paper
The termination of the Holocene African Humid Period (~9 to ~6 kyr BP) is simulated with a three-dimensional global coupled climate model that resolves synoptic variability associated with weather patterns. In the simulation, the potential for ``green'' and ``desert'' Sahara states becomes equal between 7.5 and 5.5 thousand years ago, causing the climate system to fluctuate between these states at decadal-to-centennial time-scales. This model result is supported by paleoevidence from the Western Sahara region, showing similar paleohydrological fluctuations around that time. For the present-day, only the desert Sahara state is stable in the model.
Brovkin Victor
Fichefet Thierry
Goosse Hugues
Renssen Hans
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