The system in question has always been something that combines various sensors, interpolating and adjusting to produce broad numbers. There's an extensive acade

The system in question has always been something that combines various sensors, interpolating and adjusting to produce broad numbers. There's an extensive academic reference list here under the "About" tab: https://www.ncei.noaa.gov/products/optimum-interpolation-sst https://www.ncei.noaa.gov/products/optimum-interpolation-sst