Iowa climate scientists predicted extreme summer heat, extreme rainfall expected


Via Flickr

Elizabeth Miglin | July 27, 2021

In 1991, scientists accurately predicted climate change would lead to a warmer and wetter Midwest in the spring and summer. Now, 5-day heat wave temperatures in Iowa are anticipated to increase around 7° F in an average year and 13° F once per decade, in comparison to the late 20th century. 

The impact of these findings go beyond weather patterns, degraded public infrastructure is one major ways everyday life will be altered by the new climate. In 2018, a group of climate scientists and researchers from across the state focused the Iowa Climate Statement on infrastructure to emphasize their concerns. In the statement, they explain how daily total rainfall is expected to double in intensity by 2025. 

Flooding along Iowa’s eastern and western borders in 2019 alone resulted in $1.6 billion in damages, according to the Des Moines Register. “…This type of flooding in this region is expected to become even more likely in the future if we do not take immediate actions to cut greenhouse gas emissions,” said University of Iowa Researcher Wei Zhang

Scientists recommend buildings be designed to withstand heavier rain by integrating rain screens, large gutters and downspouts. For the hot summer greater insulation, improved ventilation, planting of shade trees and more are needed.

Since 2011, the Center for Global and Regional Environmental Research has co-produced an annual Iowa Climate Statement to explain the impact of climate change on Iowa. Released in early October early, nearly every Iowa college and university has agreed to the statement. 

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