EC NMME
Computation of the E and C index as described by Takahashi et. al. (2011) using NMME data.
References
Takahashi, K., Montecinos, A., Goubanova, K., & Dewitte, B. (2011). ENSO regimes: Reinterpreting the canonical and Modoki El Niño. Geophysical Research Letters, 38(10). https://doi.org/10.1029/2011GL047364