Eden DeWald | August 20, 2018
This week’s segment explores how patronage has affected the air quality of our national parks.
Poor air quality threatens the beauty of our treasured national parks.
This is the Iowa Environmental Focus.
A recent study done by Iowa State University and Cornell University discovered that park visitor vehicle emissions and regional air pollution have negatively affected air quality at our national parks. The study found that between 1990 and 2014, the average ozone levels measured in the 33 largest national parks were the same as ozone levels from the 20 largest US cities. The parks host more than 300 million visitors each year.
The Regional Haze Rule was put in place by the EPA to protect air quality at our national parks. However, researchers found that this has only been effective in reducing ozone in areas that exceed the “unhealthy” limit of 70 parts per billion. Exposure to ozone can have a negative effect on your respiratory system, and can reduce visibility when present.
With millions of Americans flocking to the parks each summer, it is crucial that more protections are made to protect park visitors, as well as the national parks themselves.
For more information, visit iowa-environmental-focus-dot-org.
From the UI Center for Global and Regional Environmental Research, I’m Sara E. Mason.