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Trenberth Southern Oscillation Index (SOI) from NCAR
Entry ID:
NCAR_SOI
Summary
Abstract:
The Southern Oscillation Index (SOI) at NCAR is computed using monthly
mean sea level pressures at Tahiti (T) and Darwin (D). The SOI [T-D] is an optimal index that combines the Southern Oscillation into one series. These SOI values are slightly different than those calculated by the Climate Prediction Center (http://www.cpc.ncep.noaa.gov/) due to the normalization used. The [T+D] series is a measure of small scale and/or transient phenomena that are not part of the large scale Southern Oscillation. To access the SOI data at NCAR, see: http://www.cgd.ucar.edu/cas/catalog/climind/soi.html or ftp://ftp.cgd.ucar.edu/pub/shea/soi_dir/
Related URL
Geographic Coverage
(Click for Interactive Map)
Spatial coordinates
Data Set Citation
Dataset Originator/Creator:
Trenberth, K.
Dataset Title:
Southern Oscillation Index (SOI)
Dataset Series Name:
Southern Oscillation Index (SOI)
Dataset Release Place:
Boulder, CO
Dataset Publisher:
NCAR
Online Resource:
http://www.cgd.ucar.edu/cas/catalog/climind/soi.html
Temporal Coverage
Start Date:
1882-01-01
Location Keywords
Data Resolution
Temporal Resolution:
monthly
Science Keywords
ISO Topic Category
Platform
Quality
The SOI values prior to 1935 should be used with caution. There are
questions regarding the consistency and quality of the Tahiti pressure values prior to 1935. Perhaps a better estimate of the SOI prior to 1935 is the normalized Darwin pressure anomaly series. Ancillary Keywords
Data Set Progress
IN WORK
Originating Center
Data Center
Distribution
Distribution Media:
Online, ftp
Distribution Format:
ASCII
Fees:
None
Personnel
Publications/References
K. Trenberth (1984), Signal versus Noise in the Southern Oscillation,
Monthly Weather Review 112:326-332 Creation and Review Dates
Last DIF Revision Date:
2003-12-05
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- Webmaster: Monica Holland
- Responsible NASA Official: Lola Olsen
- Last updated: May 2013
