TELECONNECTION INDICES

MONTH NAO EA EA-

JET

WP
APR 2002 2.2 -0.4 0.2 -0.1
MAR 2002 0.5 0.5 --- 1.0
FEB 2002 1.6 1.2 --- 0.8
JAN 2002 0.4 1.5 --- 0.1
DEC 2001 -1.0 -0.6 --- 0.6
NOV 2001 1.2 -0.8 --- 0.7
OCT 2001 0.0 2.7 --- -0.8
SEP 2001 -1.6 -1.3 --- -2.2
AUG 2001 0.3 --- 1.3 -1.6
JUL 2001 0.1 --- 0.7 -0.8
JUN 2001 -1.0 -- 2.4 0.8
MAY 2001 0.5 -- 1.0 -0.5
APR 2001 0.9 1.3 1.2 0.3

Standardized amplitudes of selected Northern Hemisphere teleconnection patterns for the most recent thirteen months. Pattern names and abbreviations are: North Atlantic Oscillation (NAO); East Atlantic pattern (EA); East Atlantic Jet pattern (EA-JET); West Pacificn pattern (WP). No value is plotted when a pattern does not appear as a leading mode in that month.