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Development of a Heat Adaptation Plan for Louisville:Project Update
Brian Stone & Jason Vargo
Urban Climate LabGeorgia Institute of Technology
www.urbanclimate.gatech.edu
twitter.com/urbanclimatelab
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Overview
What is an urban heat island?
Extreme heat and health
Louisville heat adaptation study and plan
Initial findings
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NASA
Urban temperature anomaly
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Drivers of the urban heat island
1. Loss of natural vegetation
2. Replacement of vegetation
with impervious materials
3. Waste heat from vehicles, industry,building air conditioning
4. Trapping of heat by
building canyons
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How rapidly are cities warming?
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UrbanC
limateLab
rural areas have warmed by about 1.5 OF over 50 years
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urban areas are about 1.5OF warmer than rural areas
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most of the temperature anomaly in cities isattributable to heat island effect
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urban areas are warming more rapidlyover time than rural areas
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global vs. urban rates of warming (F/decade): 1961-2010
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Urban climate change rankings
0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80
NEW ORLEANS
SEATTLE
HARTFORD
CHARLOTTE
BOISE
NEW YORK
ST LOUIS
PHILADELPHIA
MINNEAPOLIS
EL PASO
ALBUQUERQUE
BATON ROUGE
WASHINGTON DC
RICHMOND
PORTLAND
TOLEDO
OKLAHOMA CITY
SYRACUSE
LAS VEGAS
INDIANAPOLIS
DETROIT
GREENSBORO
ATLANTA
PHOENIX
LOUISVILLE
Temperature oFWarming per decade in excess of rural trend (F)warming in excess of rural trend (F/decade)
Urban warming rankings
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heat waves in US cities are hotter, longer,
more frequent, and earlier in the year
Habeeb,
Vargo&S
tone
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