- Close agreement with other major datasets
- UHI has minimal effect on final value of GMST, but local effects remain
- There are surface station quality issues but 30% of land surface stations show long term cooling trends
- There are significant co-relations with oceanic decadal cycles
Causal issues are not addressed, at least skirted in the decadal cycles portion. The study authors emphasize that causes for the measured land warming is not the issue dealt with in these studies. Some blog entries on this with the first couple from co-authors of the studies.
I will provide updates when required.
Update1: Back in the day when I had time, I played with some numbers and came to a similar conclusion as the Berkeley group regarding the decadal oceanic cycles.