Urban heat islands and “hottest year on record” claims

I guess we have to remind our allies and those who will listen that the surface temp record is biased to warming, because of political factors and skimming and culling recording instruments and their locations, but alos, very imporantly, the heat island effect created by urbanization.

Craig Idso, an extraordinary scholar and writer, provides a very cogent discussion.

My I provide you with a a simple example from my life–the temp at my house on a hill, a little more than 2 miles north and west of a town of 20,000 and a half mile south of an 8000 acre lake is always cooler than the temp in my little town/city. Siting temp instruments influences the record.

http://www.cato.org/blog/progressive-increase-urban-heat-islands-influence-temperature-records

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