Readers of this site won’t be surprised at reports of problems in the surface temperature record. Joe D’Aleo and Anthony Watt have teamed up on a new paper published by SPPI analyzing the surface temperature record in depth. I have only skimmed it, but it looks terrific (and includes a few weather station site surveys and photos by yours truly). From the summary:
1. Instrumental temperature data for the pre-satellite era (1850-1980) have been so widely, systematically, and unidirectionally tampered with that it cannot be credibly asserted there has been any significant “global warming” in the 20th century.
2. All terrestrial surface-temperature databases exhibit very serious problems that render them useless for determining accurate long-term temperature trends.
3. All of the problems have skewed the data so as greatly to overstate observed warming both regionally and globally.