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<p>
<center>
<h2>Download Climate Timeseries</h2>
<h2><font color="#009966">TNI Index</font></h2>
</center>
<p>
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.
<p>
<p>
Time Interval: <strong>Monthly</strong><br>
Time Coverage: <strong>1871 to present</strong><br>
Update Status: <strong>updated monthly</strong><p>
Get Data: <p>
<blockquote>
<a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/Data/tni.long.data">TNI: Standard PSD Format</a> (<font size="-1"><em><a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/standard/">What is standard format?</a></em></font>)<br>
</blockquote>
<p>Source:<br>Data is from <strong>NOAA PSD</strong> using the HadISST dataset. Index was originally developed by Kevin Trenberth of NCAR/CGD. PSD is updating the index each month. This version is based on the latest HADISST and NCEP OI datasets.<br>
<p>
References:
<ol>
<li>Kevin E. Trenberth and David P. Stepaniak: J. Climate, 14, 1697-1701.
</ol>

<center> [ <font size="-1">

<a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/SOI/">SOI</a>
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<a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/NAO/">NAO</a>

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<a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/RNAO/">Rec NAO</a>

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<a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/AO/">AO</a>

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<a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/PDO/">PDO</a>

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<a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/NP/">NP</a>

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<a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/TPI/">TPI</a> 
 
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 <a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/NAO_ICE/">Iceland P</a>
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<a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/NAO_AZO/">Azores P</a> 
  
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<a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/NAO_GIB/">Gilbralter P</a>
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 | <a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/NAGASAKI/">Nagasaki P</a>
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<a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/MADRAS/">Madras P</a>
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<center> [ <font size="-1"> 



 <a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/Nino12/">Ni&ntilde;o1+2</a>
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<a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/Nino3/">Ni&ntilde;o3</a>
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 <a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/Nino34/">Ni&ntilde;o3.4</a>
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 <a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/Nino4/">Ni&ntilde;o 4</a>
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 <a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/AMO/">AMO</a>
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 <a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/GLBTS/">Global T stations</a>
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<a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/GLBTSSST/">Global T+SST (NASA)</a>
  |


<a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/TAVEGL/">Global T+SST (CRU)</a>
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<a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/gcos_wgsp/Timeseries/SUNSPOT/">Sunspots</a>
  ]
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<a href="https://webarchive.library.unt.edu/web/20090506184605/http://www.esrl.noaa.gov/psd/">Physical Sciences Division</a></strong><br />




	Document maintained by 


	<a href=https://webarchive.library.unt.edu/web/20090506184605/http://www.cdc.noaa.gov/people/cathy.smith/>Cathy Smith</a>


	(<a href="mailto:cathy.smith@noaa.gov">cathy.smith@noaa.gov</a>)

	

	<br />Updated: Oct 10, 2008 09:54:05 MDT
	
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