Climate Prediction Center

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Climate Diagnostics Bulletin

Tropical Highlights

Table of Atmospheric Indices (Table 1)

Table of Oceanic Indices (Table 2)

Time Series

Time-Longitude Sections

Mean & Anomaly Fields

Appendix 1: Outside Contributions

Table of Atmospheric Indices

FEBRUARY 2015

	SLP ANOMALIES		TAHITI	850-hPa ZONAL WIND INDEX			200-hPa WIND INDEX	OLR Index
MONTH			minus	5N-5S	5N-5S	5N-5S	5N-5S	5N-5S
	TAHITI	DARWIN	DARWIN SOI	135E-180	175W-140W	135W-120W	165W-110W	160E-160W
FEB 15	1.4	1.0	0.2	-0.4	-0.5	-0.4	0.8	-0.2
JAN 15	-1.7	-0.2	-0.8	-0.2	-0.8	-0.4	-0.6	0.2
DEC 14	-0.9	0.1	-0.6	0.9	-0.1	0.1	-0.7	0.3
NOV 14	-0.6	1.0	-0.9	0.8	-0.6	-1.3	-1.3	0.4
OCT 14	-0.3	0.8	-0.6	0.1	-0.3	-0.4	-0.2	-0.1
SEP 14	-0.4	0.9	-0.7	0.1	-0.1	-0.1	0.0	0.2
AUG 14	-0.2	1.1	-0.7	0.1	-0.8	-0.4	-1.1	0.4
JUL 14	0.2	0.5	-0.2	0.1	0.0	-0.3	-0.2	-0.1
JUN 14	-0.2	-0.4	0.2	0.2	0.2	-0.8	0.3	-0.7
MAY 14	1.2	0.2	0.5	0.3	-0.5	-1.4	-0.8	-0.1
APR 14	0.5	-1.0	0.8	-0.2	0.0	0.0	-0.1	-1.0
MAR 14	-1.0	0.8	-0.9	-0.6	-0.2	-0.3	0.2	-1.1
FEB 14	-0.8	-0.8	0.1	-0.9	-0.4	0.3	0.8	0.2

TABLE 1. Atmospheric index values for the most recent 12 months. Indices are standardized by the mean annual standard deviation, except for the Tahiti and Darwin SLP anomalies which are in units of hPa. Positive (negative) values of 200-hPa zonal wind index imply westerly (easterly) anomalies. Positive (negative) values of 850-hPa zonal wind indices imply easterly (westerly) anomalies. Anomalies are departures from the 1981-2010 base period means.


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