The Smith & Reynolds Extended Reconstructed Sea Surface Temperature (ERSST) Level 4 dataset produced by NOAA National Centers for Environmental Information (NCEI) provides a historical reconstruction of monthly global ocean surface temperatures and temperature anomalies over a 2 degree spatial grid since 1854 from in-situ observations based on a consistent statistical methodology that accounts for uneven sampling distributions over time and related observational biases. The most recent version 5 of ERSST can accessed by visiting here: https://podaac.jpl.nasa.gov/dataset/REYNOLDS_NCDC_L4_MONTHLY_V5. To learn more about the ERSST, please visit: https://www.ncdc.noaa.gov/data-access/marineocean-data/extended-reconstructed-sea-surface-temperature-ersst-v5.

Credit: JPL/PO.DAAC