Figure 6
From: On the Shortening of the Lead Time of Ocean Warm Water Volume to ENSO SST Since 2000
1000 hPa westerly zonal wind averaged in (5°S–5°N) and in Jan 1979–Dec 1999 (bar), and Jan 2000–Dec 2016 (line). The unit is m/s. The data are from R2 reanalysis and 6 hourly mean. The westerly zonal wind is referred to as u > 0. Figure is generated by GrADS (http://cola.gmu.edu/grads/).
