“The biggest bias is the urban heat island effect. What happens is that because heat is retained by the surfaces and released into the air at night, the night’s low temperature is not as low as it could be if the thermometer were outside of town and in a field.”
Global average surface temperatures have been variable, but show an increasing trend in recent decades.Over the years, he said, more and more infrastructure has been built up around the thermometer locations, and at night, the asphalt and concrete release the absorbed heat and push up the temperature.

“You can look at any set of climate data, no matter who produces it, and you can see this effect. The low temperatures are trending upward much faster, and the high temperatures are virtually unchanged. But it’s the average temperature that’s being used to track climate change,” Mr. Watts said.

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There are probably truths on both sides. If only we can avoid the dramatic alarmism then maybe we can have a more sensible clearheaded approach to the issue.

#Climate #Temperature
Trillions Spent on ‘Climate Change’ Based on Faulty Temperature Data, Climate Experts Say