There shouldn’t be any adjustments, period.
People doing analysis like these normally assume a Monte Carlo distribution of error (high and low) and leave the data alone. It is a blatant conflict of interest for a climate activist like Hansen to turn a downwards trend into an upwards trend..
How about letting the Raven’s coach adjust the AFC championship game score?
We have satellites now, which are not affected by TOBS or UHI. The surface record should be frozen where it was 15 years ago, and never touched again.