
MY EL NINO/LA NINA/NEUTRAL RESEARCH IS FINISHED
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- SouthFloridawx
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- SouthFloridawx
- S2K Supporter
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- Joined: Tue Jul 26, 2005 1:16 am
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- SouthFloridawx
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definition
southfloridawx2005 wrote:Warm (red) and cold (blue) episodes based on a threshold of +/- 0.5oC for the Oceanic Niño Index (ONI) [3 month running mean of ERSST.v2 SST anomalies in the Niño 3.4 region (5oN-5oS, 120o-170oW)], based on the 1971-2000 base period. For historical purposes cold and warm episodes (blue and red colored numbers) are defined when the threshold is met for a minimum of 5 consecutive over-lapping seasons
I see that you are using the definition and data from the NOAA CPC site, but, may I ask how you decided what an el Nino "year" and a la Nina "year" was based on that data ????
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- SouthFloridawx
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Re: definition
hcane wrote:southfloridawx2005 wrote:Warm (red) and cold (blue) episodes based on a threshold of +/- 0.5oC for the Oceanic Niño Index (ONI) [3 month running mean of ERSST.v2 SST anomalies in the Niño 3.4 region (5oN-5oS, 120o-170oW)], based on the 1971-2000 base period. For historical purposes cold and warm episodes (blue and red colored numbers) are defined when the threshold is met for a minimum of 5 consecutive over-lapping seasons
I see that you are using the definition and data from the NOAA CPC site, but, may I ask how you decided what an el Nino "year" and a la Nina "year" was based on that data ????
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- SouthFloridawx
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Re: definition
southfloridawx2005 wrote:hcane wrote:southfloridawx2005 wrote:Warm (red) and cold (blue) episodes based on a threshold of +/- 0.5oC for the Oceanic Niño Index (ONI) [3 month running mean of ERSST.v2 SST anomalies in the Niño 3.4 region (5oN-5oS, 120o-170oW)], based on the 1971-2000 base period. For historical purposes cold and warm episodes (blue and red colored numbers) are defined when the threshold is met for a minimum of 5 consecutive over-lapping seasons
I see that you are using the definition and data from the NOAA CPC site, but, may I ask how you decided what an el Nino "year" and a la Nina "year" was based on that data ????
I also got the el nino/la nina data from the following site...
http://ggweather.com/enso/years.htm
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- SouthFloridawx
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Here is the longer SST dataset
http://www.cdc.noaa.gov/Pressure/Timeseries/Nino34/
I believe you would have to calculate your own anomalies (using whatever mean you had beforehand) and just take the running means that NOAA uses to come up with your own long table. You might also consider de-trending the data a little b/c the SSTs were a little cooler in the early part of the century and last.
http://www.cdc.noaa.gov/Pressure/Timeseries/Nino34/
I believe you would have to calculate your own anomalies (using whatever mean you had beforehand) and just take the running means that NOAA uses to come up with your own long table. You might also consider de-trending the data a little b/c the SSTs were a little cooler in the early part of the century and last.
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