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Parameter Tree:
EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > TELECONNECTIONS > NORTH PACIFIC OSCILLATION
Definition:
The North Pacific Index is the area-weighted sea level pressure over
the region 30N-65N, 160E-140W.
Reference:
Trenberth, K.E. and J.W. Hurrell, 1994: Decadal atmosphere-ocean
variations in the Pacific. Clim. Dyn. 9, 303-319.
http://www.cgd.ucar.edu/~jhurrell/np.html
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