Anjanette Riley was at last week’s Resilient Chicago workshop on climate trends and adaptive planning. She had this to say about the event:
Presentation after presentation, what struck me most is just how much climate change already is and will continue to impact our daily lives—and how interconnected those impacts are. Actually, a quick glance at the agenda was all it took to realize this workshop was going to be about much more than just predictions of yearly rainfall or average temperatures. The speakers were climatologists, public health experts, community planners, and policy specialists. And the participants were just as diverse—educators, urban planners, local officials, and private consultants.
Of course, we did talk about climate concepts and trends. IISG’s Molly Woloszyn kicked things off by making sure we were all on the same page about the difference between weather and climate—short-term changes vs. long-term averages. And throughout the day, Illinois State Climatologist Jim Angel told us that temperatures have risen by roughly 1.5o F over the last century and that we can expect drier summers and more precipitation in winter, spring, and fall.
Much of the day, though, was dedicated to what these changes mean for the people and wildlife that call the Chicago area home. Some impacts are pretty straightforward—you have likely seen them already. Warmer temperatures mean greater strain on an aging energy infrastructure and higher rates of heatstroke. Wetter springs means more stormwater runoff and basement flooding. And summertime droughts could lower crop yields and increase food prices.
Many were hard to see at first glance. As nice as they sound to many of us, warmer winters could have serious repercussions for public health, infrastructure, and Great Lake ecosystems. For example, with less frequent deep freezes, some disease-carrying insects could persist throughout the year. Fluctuations between freezing and thawing will also create more potholes and cracks in building exteriors. And—most unexpected to me—warmer water temperatures could make Lake Michigan and surrounding waterways more welcoming to a whole new suite of invasive species that could never have lived there before.
Fortunately, presenters came armed with solutions as well. Most were adaptation strategies—steps to prepare for climate change impacts. Speakers from Chicago Wilderness, the Alliance for the Great Lakes, and Hey and Associates, for example, showed how planting native trees, building rain gardens, and restoring natural areas could simultaneously filter pollutants from stormwater, lower air temperatures, and reconnect habitats divided by urbanization. Samuel Dorevitch, a professor at the University of Illinois at Chicago, and Dan Gabel from ComEd talked about the importance of early warning systems and emergency response plans. And the Center for Neighborhood Technology’s Harriet Festing introduced their Rain Readyprogram, which helps homeowners and communities understand flooding causes and prepare for future storms.
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