Ozone Risk Assessment for Vital Signs Networks

Ozone risk assessment uses a biologically-based method to evaluate the risk of foliar injury from ozone at parks in the 32 Inventory & Monitoring Networks, the Appalachian National Scenic Trail, and the Natchez Trace National Scenic Trail. The assessment allows resource managers at each park to better understand the risk of ozone injury to vegetation.

Initial assessments were completed in 2004 using ozone monitoring data from 1995–1999. A reassessment of ozone risk was completed in 2007 for 8 National Park units using monitoring data from 2000–2004 in parks that appeared to experience increased levels of ozone exposure since the initial assessment. Together the two assessments provide insight about changes in ozone exposure over a ten-year period, and examine how the changes may have altered the risk of ozone injury to plants.

Select a network or trail from the map or list below to view an assessment.

Ozone Risk Assessment Network Map

Last updated: April 2, 2018