This RClimate Script lets users retrieve and plot the weekly NOAA NINO 3.4 SST anomaly data for 1990 to the most recent value. Links to the NOAA data file and my RClimate script are included. Users can run my script with a simple R source() statement.
NINO 3.4 SST Anomaly
I’ve discussed ENSO and NINO 3.4 in this earlier post.
SST’s in 4 equatorial Pacific zones are closely monitored to assess the status of El Nino – Southern Oscillation (ENSO).
NINO 3.4 SST anomaly provides a quick and effective indication of ENSO conditions. NOAA updates the NINO 1,2,3,3.4 and 4 SST and SSTA series weekly.
Here’s the weekly NINO 3.4 trend from 1990 to the most recent weekly reading. Click image to enlarge.
Here are the data and RClimate Script links:
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Hi Kelly,
Thanks for this. The online text file has a small bug. I cahnged:
points(la_nina$yr_frac, lanina$ssta, col = “blue”, type = “h”)
points(el_nino$yr_frac, elnino$ssta, col = “red”, type = “h”)
to
points(la_nina$yr_frac, la_nina$ssta, col = “blue”, type = “h”)
points(el_nino$yr_frac, el_nino$ssta, col = “red”, type = “h”)
Lucia
Thanks for the tip. I’ve changed the source script and will update shortly.
Kelly
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