Figure 3
From: A unified complex index to characterize two types of ENSO simultaneously
Composite SSTA (a), SLPA and UWNDA (b) distributions of different types of El Nino and La Nina classified by UCEI from 1950 to 2017. Coloring areas and vectors passed 99% confidence level from a two-tailed Student’s t test. Month numbers and averaged r of UCEI are shown in brackets. Red boxes indicate the regions IOD, N3 and N4, respectively.
