TELECONNECTION INDICES

MONTH NAO EA EA-

JET

WP
MAY 2003 0.7 --- 1.0 -0.2
APR 2003 0.3 0.5 -0.3 1.9
MAR 2003 0.6 0.7 --- -0.6
FEB 2003 -0.1 -0.7 --- 0.2
JAN 2003 0.6 0.6 --- -0.8
DEC 2002 -1.3 1.0 --- 1.4
NOV 2002 -0.5 2.0 --- 0.6
OCT 2002 -1.4 1.6 --- 2.5
SEP 2002 -0.6 -1.8 --- -3.6
AUG 2002 0.2 --- -1.0 -0.5
JUL 2002 0.7 --- 0.6 -0.5
JUN 2002 0.4 --- 2.0 0.4
MAY 2002 -0.7 --- 0.3 -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.