Closed sdat2 closed 3 years ago
Here will will calculate the NINO 3.4 index of El Nino variabillity and use it to analyze datasets.
First read this page from NOAA. It tells you the following.
The Nino 3.4 region is defined as the region between +/- 5 deg. lat, 170 W - 120 W lon. Warm or cold phases of the Oceanic Nino Index are defined by a five consecutive 3-month running mean of sea surface temperature (SST) anomalies in the Niño 3.4 region that is above (below) the threshold of +0.5°C (-0.5°C). This is known as the Oceanic Niño Index (ONI). (Note that "anomaly" means that the seasonal cycle is removed.)
https://rabernat.github.io/research_computing_2018/assignment-8-xarray-for-enso.html