This paper represents important progress in understanding what is (and isn't) in global surface temperature data sets. (climateaudit.org)
The excellent global surface temperature data shows about 0.8 C warming in the past 100 years. (judithcurry.com)
It seems that the upwards gradient from 1990 to now that appears in a lot of global surface temperature data (whether correct or not) is being used to drive policy. (climateaudit.org)