National Oceanic and Atmospheric Administration
https://psl.noaa.gov/data/gridded/data.interp_OLR.html

National Oceanic and Atmospheric Administration
https://psl.noaa.gov/gcos_wgsp/Timeseries/Data/dmi.had.long.data

National Oceanic and Atmospheric Administration
https://psl.noaa.gov/gcos_wgsp/Timeseries/Data/nino34.long.anom.data