Teleconnections between ENSO and North Atlantic in an ECHO-G simulation of the 1000–1990 period
Article first published online: 22 MAR 2007
Copyright 2007 by the American Geophysical Union.
Geophysical Research Letters
Volume 34, Issue 6, March 2007
How to Cite
2007), Teleconnections between ENSO and North Atlantic in an ECHO-G simulation of the 1000–1990 period, Geophys. Res. Lett., 34, L06705, doi:10.1029/2006GL028852., , and (
- Issue published online: 22 MAR 2007
- Article first published online: 22 MAR 2007
- Manuscript Accepted: 6 FEB 2007
- Manuscript Revised: 12 JAN 2007
- Manuscript Received: 22 NOV 2006
- North Atlantic;
- coupled model
 The North Atlantic sea level pressure anomalies (SLPA) associated with El Niño Southern Oscillation (ENSO) have been analyzed in a quasi-millennial (1000–1990) simulation with the ECHO-G model. In November–December, the ENSO-related SLPA over the North Atlantic area are weak, while a realistic pattern already appears over the North Pacific and North America. In January–March, the SLPA over North Atlantic are stronger and realistic from the North Pacific to Europe: the Aleutian low is strengthened (weakened), SLPA are positive (negative) over the north-central and north-eastern parts of North America, and SLPA display a negative (positive) NAO-like pattern over North-Atlantic during warm (cold) ENSO events, as in observations. The results also confirm the existence of a strong inter-event SLPA associated with warm and cold ENSO events, especially over the North Atlantic, while the relationship is stationary at multidecadal timescales. It seems that neither the intensity nor geographical longitude of the equatorial Pacific sea surface temperature anomaly (SSTA) and intensity of tropical Atlantic SSTA, nor the volcanic forcing, simply introduced here as a decrease of the solar constant, significantly induce an inter-event variability, which seems, in this run, mostly of atmospheric origin.