TY - JOUR
T1 - A mechanism for generating ENSO decadal variability
AU - Kleeman, Richard
AU - McCreary, Julian P.
AU - Klinger, Barry A.
PY - 1999/6/15
Y1 - 1999/6/15
N2 - A coupled ocean-atmosphere model of the Pacific basin is used to illustrate a mechanism by which El Niño and the Southern Oscillation (ENSO) may be modulated on decadal time scales. For reasonable choices of model parameters, solutions exhibit two types of oscillation, an ENSO-like interannual mode and a decadal one. The decadal mode affects the equatorial zone by means of an oceanic teleconnection that involves transport variations of the North Pacific Subtropical Cell. Since almost half of the cool, thermocline water that upwells in the eastern equatorial Pacific participates in this cell, these variations significantly alter the extent of the cold tongue, and hence provide an efficient mechanism for modulating ENSO.
AB - A coupled ocean-atmosphere model of the Pacific basin is used to illustrate a mechanism by which El Niño and the Southern Oscillation (ENSO) may be modulated on decadal time scales. For reasonable choices of model parameters, solutions exhibit two types of oscillation, an ENSO-like interannual mode and a decadal one. The decadal mode affects the equatorial zone by means of an oceanic teleconnection that involves transport variations of the North Pacific Subtropical Cell. Since almost half of the cool, thermocline water that upwells in the eastern equatorial Pacific participates in this cell, these variations significantly alter the extent of the cold tongue, and hence provide an efficient mechanism for modulating ENSO.
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U2 - 10.1029/1999GL900352
DO - 10.1029/1999GL900352
M3 - Article
AN - SCOPUS:0033563598
SN - 0094-8276
VL - 26
SP - 1743
EP - 1746
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 12
ER -