0000003141 00000 n 0000001334 00000 n As UHIs are characterized by increased temperature, they can potentially increase the magnitude and duration of heat waveswithin cities. 0000073511 00000 n 2011). A large part of the country has been hit with a punishing heat wave. Even in this desolate parking lot, there's an example of how developers can reduce the effects of urban heat islands.DAHLBERG: So we're walking over to - what? 56 0 obj << /Linearized 1 /O 58 /H [ 760 371 ] /L 209884 /E 120915 /N 14 /T 208646 >> endobj xref 56 17 0000000016 00000 n One local resident knows first hand after living it! trailer 0000002530 00000 n The researchers found that the Chicago heat island consistently appears in the western suburbs, not in the core downtown area.
0000001125 00000 n 0000012796 00000 n And in San Francisco, some parking lots are getting resurfaced with new reflective coatings. Shade's also going to sort of cool the building itself.
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The city holds more heat than the suburbs and … 0000003993 00000 n Because urban areas tend to be hotter than nearby rural areas, sometimes by double digits, the media talks about the “urban heat island” effect. Put your hand on it.DAHLBERG: It's surprisingly cool, actually (laughter).DAHLBERG: Korfmacher says it's the moisture in the plants that keeps this space cooler than the asphalt. 0000003228 00000 n Plant Cover In Cities Could Combat 'Urban Heat Island Effect' A large part of the country has been hit with a punishing heat wave. Research has found that the mortality rate during a heat wave increases exponentially with the maximum temperature, an effect that is exacerbated by the UHI… And for more examples of how developers can learn from nature, he leads me down to a quiet spot by the Genesee River, which flows through Rochester.KORFMACHER: We got grass all around us. 0000002789 00000 n Chicago’s precise heat island effect was studied as part of an EPA pilot program and in 1999, Northwestern University used data from the National Climatic Data Center (NCDC) to determine where Chicago’s hottest areas are. The Urban Heat Island, Photochemical Smog, and Chicago: Local Features of the Problem and Solution Kimberly A. 0000076188 00000 n (2010)], distorted synoptic and mesoscale (slope and valley, sea and lake breeze) winds (Keeler and Kristovich 2012), and rainfall modification (Niyogi et al.
trailer << /Size 73 /Info 52 0 R /Root 57 0 R /Prev 208636 /ID[<2cb3e96a16b2c3beb76c1d280af291ef> Cities across the country are making some progress. 0000000687 00000 n 0000002949 00000 n 0000019185 00000 n 0000009793 00000 n For NPR News, I'm Brett Dahlberg in Rochester, N.Y.Copyright © 2019 NPR. < He's a professor of environmental science at the nearby Rochester Institute of Technology.KARL KORFMACHER: There's a large expanse of asphalt. You can already see on this that there's moisture, right? Green Roofs and Chicago. And for everyone else, it makes the heat waves even more unbearable. 0000002108 00000 n 0000003107 00000 n CHICAGO (WLS) -- The urban heat island effect is something that we see almost on a daily basis here in Chicago. The Urban Heat Island, Photochemical Smog, and Chicago: Local Features of the Problem and Solution Kimberly A. 0000001547 00000 n 54 23
Gray Mary E. Finster Department of Civil Engineering Northwestern University Evanston, IL Submitted to Atmospheric Pollution Prevention Division U.S. Environmental Protection Agency And if you look out here, you'll see very little vegetation.DAHLBERG: Cities and suburbs in the U.S. have lots of this kind of space - expansive blacktops with precious little shade. 0000002140 00000 n Korfmacher says these areas are basically big outdoor warming ovens, and that makes hot days even hotter. 0000004006 00000 n 0000001131 00000 n 0000003688 00000 n 0000009695 00000 n
Some places across the middle and eastern U.S. have suffered record high temperatures. 0000003017 00000 n Gray Mary E. Finster Department of Civil Engineering Northwestern University Evanston, IL Submitted to Atmospheric Pollution Prevention Division U.S. Environmental Protection Agency And this is most dangerous in the scorching summer months where some places can experience temperatures up to 7 degrees hotter than outlying areas. Description. 0000041755 00000 n
Chicago has started promoting reflective roofing. 0000003451 00000 n It essentially results from the fact that urban building materials, such as concrete and asphalt, can absorb heat during the day and radiate it back at night, much more than areas covered with vegetation do. While much investigation on the subject thus far has focused on either the local benefits of policies or broad descriptions of the entire region, few studies have evaluated whether the small-scale benefits of policies have begun to collectively impact the larger heat island. %PDF-1.4 %����
0000001110 00000 n Further, the western suburbs are developing rapidly. The new finding could provide city planners and officials with new ways to influence those effects.
It heightens the risk for people who are vulnerable to heat-related health problems, like older populations and people who don't have air conditioning at home. 0000000016 00000 n