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Reply #5


Response to NoOneMan (Reply #4)

Fri Feb 1, 2013, 11:04 AM

5. Just a meaningful number.

http://www2.ucar.edu/atmosnews/news/8773/cities-affect-temperatures-thousands-miles


The extra “waste heat” generated from buildings, cars, and other sources in major Northern Hemisphere urban areas causes winter warming across large areas of northern North America and northern Asia. Temperatures in some remote areas increase by as much as 1 degree Celsius (1.8 degrees Fahrenheit), according to the research by scientists at the Scripps Institution of Oceanography; University of California, San Diego; Florida State University; and the National Center for Atmospheric Research.

At the same time, the changes to atmospheric circulation caused by the waste heat cool areas of Europe by as much as 1 degree C (1.8 degrees F), with much of the temperature decrease occurring in the fall.



OK, so, are the cities warming or cooling the planet?

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