Do paved roads, parking lots and buildings actually lead to higher temperatures?

By Monica Woods : abc10 – excerpt

One study found downtown Sacramento can be over 7° warmer than surrounding areas.

SACRAMENTO, Calif — Extreme heat is the leading cause of weather-related deaths over the past 30 years, according to the National Weather Service.

This summer we’ve already felt the impacts of more extreme weather from a warming climate. Portland and Seattle hit their all-time record high. Downtown Sacramento warmed to 113° just one-degree shy of tying their all-time record high…

WHAT WE FOUND

Neighborhoods in highly-developed cities can be 15 to 20 degrees hotter than nearby tree-lined communities. This is called the Urban Heat Island effect.

Andrew Pershing, director of climate science at Climate Central says the researchers at Climate Central, a nonprofit organization that analyzes and reports on climate science, developed a new ranking system for warming in metro areas based on data from the National Oceanic and Atmospheric Administration (NOAA).

This allows them to produce a score for 158 cities around the country and calculate how much hotter these cities are relative to a hypothetical situation that didn’t have a large population living there.

The five cities with the highest scores for warming are: New Orleans, Newark, New York City, Houston and San Francisco. All warmed over seven to almost nine degrees over surrounding areas. Sacramento ranks number 11, warming slightly over seven degrees from surrounding areas.

To get this number, Climate Central researchers looked at five factors…(more)


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