5. What is Cool Pavement?
■ The term traditionally
refers to paving materials
that reflect more solar
energy (higher albedo)
to remain cooler than
conventional pavements
– enhance water evaporation
(evaporative cooling)
–or have been otherwise
modified (lower emissivity)
Hi Everyone, thank you all for being here this evening. I am Neil Debbage and I am an associate professor at UTSA who's work focuses on urban climate. Tonight we are here to think about how we can leverage data to observe and ultimately improve our city, and I will be sharing one example of how we can do this specifically related to the City of San Antonio’s cool pavement pilot. We can see one of the cool pavement installations below on Grant Ave.
Simple answer is it has been hot
Shattered number of 100 degree days
Also set the record for consecutive days over 100
Due to high pressure sitting over our region, preventing rain; but we also no that in some places in the city it is much hotter
July 12, 2018 surface temperature
Talk about clear urban signature; disparities
Surface properties have a big influence so can we alter them to cool things off as well
Part of our broader CAAP efforts
Mitigation strategy number 20
City installed two additional ones after the field work was started so we did not get to those
Durashield is an acrylic coating with silica
Solar Pave is an acrylic polymer
Plus TI is an oil based tiatianum dioxide spray; doesn’t change appearance or albedo but does alter emissivity (amount of heat radiated)
School of Architecture + Planning and Geography
Design of site and control
Times 6 -7 12 - 1 4 – 5 and 9 – 10
Spent half a month (15 days) this summer collecting data and just finished up a week and a half ago
Mention infrared gun here
Walk through net radiometer
Discuss the importance of difference temperatures
carol crest cool pavement
Think about longer term more permanent data collection like a mesonet
Acknowledge COSA, UTSA, cool pavement team