|
Detailed Reference Information |
Otto-Bliesner, B.L. (1999). El Niño/La Niña and Sahel precipitation during the Middle Holocene. Geophysical Research Letters 26: doi: 10.1029/1998GL900236. issn: 0094-8276. |
|
Simulations with a synchronously coupled atmosphere-land-ocean-sea ice model indicate El Ni¿o/La Ni¿a-like events in the eastern tropical Pacific Ocean during the middle Holocene (6 ka) with similar intensities and frequencies as at present (0 ka). July-August-September Sahel precipitation shifts northward as expected from proxy data. For present-day, interannual-decadal variability of western Sahel precipitation is correlated with both Pacific El Ni¿o/La Ni¿a sea surface temperature (SST) anomalies and the Atlantic dipole. Teleconnections at 6 ka between Sahel precipitation and El Ni¿o/La Ni¿a SST anomalies are absent with tropical Atlantic SSTs asserting a dominant influence. These results illustrate potential problems with using present-day teleconnection patterns in interpreting past climate variability from proxy data. ¿ 1999 American Geophysical Union |
|
|
|
BACKGROUND DATA FILES |
|
|
Abstract |
|
|
|
|
|
Keywords
Global Change, Climate dynamics, Meteorology and Atmospheric Dynamics, Paleoclimatology, Meteorology and Atmospheric Dynamics, Numerical modeling and data assimilation, Information Related to Geologic Time, Cenozoic |
|
Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
|
|
|