I have mentioned that the Extended Reconstructed Sea Surface Temperature (ERSST) version 3b no longer uses satellite data due to a cooling bias issue. You know we just couldn't have cooling bias issues trying to prove how much CO2 is warming the world. After spending billions on satellites, it kind of sucks that they can't show as much warming as the meticulously maintained global surface temperature record. So about how much bias is there and why?
This next chart is apples and oranges but fun anyway. It compares the high latitude Reynolds SST to the ERSSTv3b combined land and oceans.
If you want to duplicate these charts, you should know I used a 2001.90 to 2012.90 baseline to remove the seasonal cycle for the Reynolds data. Baseline selection makes a big difference.