Yes, cities affect surface temperature. No, that changes nothing about climate warming. In fact, it creates a bigger concern.
an integrated database of climate summaries from land surface stations across the globe that have been subjected to a common suite of quality assurance reviews. The data are obtained from more than 20 sources. Some data are more than 175 years old while others are less than an hour old.Global temperatures from 2013 to 2017.Brian Stone, a professor at the Georgia Institute for Technology, and colleagues sounded a warning bell that I often feel gets missed.
Cities are made with heat-absorbing materials, have less vegetation to provide evapotranspirational cooling, and consist of anthropogenic heat from transportation and heating systems. Many buildings also contribute to the UHI by emitting its heat into urban corridors.
I end with this promise. Climate scientists really do understand the role that urbanization plays in temperature warming, and the new study also shows that they will be cognizant of urban encroachment on the observation. However, none of this changes the narrative about climate change that the planet currently faces.Dr. Marshall Shepherd, Dir., Atmospheric Sciences Program/GA Athletic Assoc.
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