Warm pool, changes

Ocean temperatures in the Indo-Pacific Warm Pool—a region where sea surface temperatures remain above 28°C (82.4°F) year-round—in November-April for 1900-1980 (top) and 1981-2018 (bottom). Darker colors mean warmer temperatures. The warm pool has been growing larger and warmer. NOAA Climate.gov image using data from Roxy et al. 2019.