The urban heat island myth (UHI) can be debunked by both the satellite data sets which are not affected by UHI and show the warming trend as well as the fact the the Arctic is warming much faster than the rest of the planet.
https://www.carbonbrief.org/the-arctic-has-warmed-nearly-four-times-faster-than-the-global-average
"The Arctic has warmed ‘nearly four times faster’ than the global average"
