Extended Data Fig. 6: Mean state change during 1921–2020.
From: Understanding the recent increase in multiyear La Niñas
(a) 30-year running mean SST over the WP (130°E–170°E, 5°S–5°N) (red line), SSTW minus SSTC (170°W–150°W, 5°S–5°N) (orange line), and thermocline depth (20 °C isotherm, Z20 (m)) averaged in the NINO3.4 region (blue line). (b) The change of the equatorial thermocline depth and temperature measured by 20-year mean difference: 2001–2020 minus 1921–1940. Black line represents the thermocline depth during 2001–2020 while brown line represents the thermocline depth during 1921–1940.
