The researchers took satellite measurements of land surface
temperatures over the past 20 years and cross-referenced
them against the geographical coordinates of more than
8400 AI data centres.
Recognising that surface temperature could be affected by other
factors, the researchers chose to focus their investigation on
data centres located away from densely populated areas.
They discovered that land surface temperatures increased
by an average of 2°C (3.6°F) in the months after an AI data
centre started operations. In the most extreme cases, the
increase in temperature was 9.1°C (16.4°F).
The effect wasn’t limited to the immediate surroundings
of the data centres: the team found increased temperatures
up to 10 kilometres away. Seven kilometres away, there was
only a 30 per cent reduction in the intensity.
https://archive.fo/Riztz
That is wild, but I guess not unexpected. If you have a 1GW datacenter, that 1GW has to go somewhere. 1GW being what a small city might use.