Trans-Nino Index (TNI)
Entry ID: NOAA_NWS_CPC_TNI

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Summary
Abstract: [Source: NOAA Earth System Research Laboratory, Physical Sciences
Division, http://www.esrl.noaa.gov/psd/ ]

The timeseries is calculated from the HadISST and the NCEP OI Datasets. It is the standardized Nina 12 minus the Nina 4 with a 5 month running mean applied which is then standardized using the 1950-1979 period.

Time Interval: Monthly
Time Coverage: 1870 to present
Update Status: updated monthly
Related URL
Description: Access the TNI Index
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Data Set Citation
Dataset Originator/Creator: NOAA Earth System Research Laboratory, Physical Sciences Division, (Originally developed by Kevin Trenberth of NCAR/CGD)
Dataset Title: Trans-Nino Index (TNI)
Dataset Release Place: Boulder, CO, USA
Dataset Publisher: NOAA Earth System Research Laboratory, Physical Sciences Division
Online Resource: http://www.esrl.noaa.gov/psd/gcos_wgsp/Timeseries/TNI/
Temporal Coverage
Start Date: 1870-01-01
Data Resolution
Temporal Resolution: 1 Month
Temporal Resolution Range: Monthly - < Annual
Quality Please See Data Set Home Page:

http://www.esrl.noaa.gov/psd/gcos_wgsp/Timeseries/TNI/
Data Set Progress
COMPLETE
Personnel
Role: TECHNICAL CONTACT
Role: INVESTIGATOR
Email: esrl.psd.data at noaa.gov
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Publications/References
Kevin E. Trenberth and David P. Stepaniak (2001), Indices of El Ni??o Evolution, J. Climate, 14, 8, 1697-1701, doi:doi: 10.1175/1520-0442(2001)014<1697:LIOENO>2.0.CO;2
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2010-08-30
Last DIF Revision Date: 2012-03-29
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