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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 2018

  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 18 -0.9 -0.3 -0.3 -0.4 -0.6 -0.2 -0.1 0.4
JUL 18 -0.2 -0.6 0.2 0.4 0.1 -0.3 0.7 0.3
JUN 18 0.5 0.8 -0.1 0.2 -0.9 -0.9 -1.0 1.1
MAY 18 1.4 0.7 0.4 0.3 0.1 -0.1 0.2 1.0
APR 18 0.6 -0.4 0.5 -0.3 0.8 0.4 0.9 1.2
MAR 18 0.4 -2.2 1.5 -0.8 1.4 1.1 2.0 0.5
FEB 18 -0.8 0.2 -0.5 -1.2 -0.3 0.1 0.7 0.0
JAN 18 0.1 -1.9 1.1 1.4 0.8 0.1 0.9 1.8
DEC 17 -0.3 -0.1 -0.1 0.5 0.4 -0.1 0.3 0.9
NOV 17 0.2 -1.5 0.9 0.8 0.9 0.2 1.0 1.1
OCT 17 0.3 -1.4 0.9 0.6 0.3 -0.4 1.0 0.7
SEP 17 1.2 0.1 0.6 1.2 0.2 0.0 -0.3 0.8
AUG 17 0.6 -0.4 0.5 0.8 0.0 -0.4 -0.3 0.3

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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