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Native Green Roofs

TEMPERATURES OF GREEN ROOFS, WHITE ROOFS, AND BLACK-TOP ROOFS

Green roofs can help cities and improve the quality of the air, reduce stormwater runoff, cool the city, while also improving the energy efficiency of the building beneath them. Results from the first round of tests have been published in the journal Urban Ecosystems. The research currently underway and funded by Huntsman Inc. with additional support from Netafim, Ewing irrigation, Acme Brick, and JDR Enterprises, is looking at optimizing green roofs for our hot climate but simplifying design using recycled and foam products in the growing media.


Last Updated: 09/02 - 2:00am

  90.0°
  86.0°
  77.0°
  76.0°
  77.0°
  76.0°


Side view of metal insulated boxes that represent simulated green roofs with plants and soil (top), roofs covered with white material (middle), and roofs covered with traditional, black tar-based material (bottom).

Temperatures shown are real-time measurements updated every hour for each roof type, and include the temperature of the roof surface and within the insulated boxes (representing the building interior temperature). The outdoor air temperature is noted above the illustration.

By studying temperatures and rainwater capture capabilities of experimental roof tops at The University of Texas at Austin's Lady Bird Johnson Wildflower Center, Dr. Mark Simmons (the center's restoration ecologist) and colleagues have determined that green roofs can cool buildings as well as helping to remove pollutants from and store storm water.

 

Current Conditons

Temperature: 78.83 F
Relative Humidity: 83.10 %
Dew Point: 73.28 F
Wind Speed: 0.87 mph
Wind Direction: SSE - 147.40°
Wind Chill: 78.83 F
Soil Temperature: 92.10 F
Rain Fall: 0.00 in
Barometric Pressure: 1022.00 mbar
Battery: 12.84 v min

Last update at 9/2/14 - 2:40am

Yesterday's Summary (9/01/2014)

Temperature 84.10 F average
  72.46 F min
  97.40 F max
Relative Humidity 40.40 % min
  93.70 % max
Dew Point 68.48 F min
  74.22 F max
Wind Speed 0.00 mph min
  15.49 mph max
Wind Direction SSE 147.30°
Wind Chill 72.46 F min
  97.40 F max
Soil Temperature 88.20 F min
  107.90 F max
Rain Fall 0.00 in total
Battery 12.76 v min

Last update at 9/2/14 - 2:40am

For additional questions or web related issues:
Matthew D. O'Toole
Environmental Designer
Lady Bird Johnson Wildflower Center
motoole@wildflower.org | 512.232.0134

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