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Climate Diagnostics Bulletin
Climate Diagnostics Bulletin - Home Climate Diagnostics Bulletin - Forecast Climate Diagnostics Bulletin - Extratropics

 

  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

AUGUST 2017

  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
AUG 17 0.6 -0.4 0.5 0.8 0.0 -0.4 -0.3 0.3
JUL 17 1.2 -0.2 0.8 0.9 0.3 -0.7 -0.2 -0.4
JUN 17 -0.3 0.6 -0.4 0.4 -0.4 -0.8 -0.4 0.6
MAY 17 0.7 0.2 0.3 1.0 0.0 -0.6 -0.3 0.1
APR 17 -0.5 -0.2 -0.2 0.3 -0.1 -0.5 -0.4 0.4
MAR 17 0.7 -0.9 0.9 1.5 0.9 0.0 0.8 1.1
FEB 17 0.1 0.3 -0.1 0.6 0.4 -1.4 -0.2 1.4
JAN 17 -0.3 -0.7 0.2 0.7 0.2 -0.6 0.5 1.1
DEC 16 -0.1 -0.7 0.3 0.7 0.0 0.2 0.0 1.4
NOV 16 -0.3 -0.1 -0.1 0.8 0.2 -0.6 0.9 1.4
OCT 16 -0.9 -0.4 -0.3 0.7 0.2 -0.4 0.0 1.0
SEP 16 1.0 -1.2 1.2 0.8 0.3 0.0 0.5 0.9
AUG 16 0.3 -1.0 0.7 0.1 0.3 0.1 0.7 0.8

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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