For more information about National Park Service air resources,
please visit http://www.nature.nps.gov/air/. Studies and
Monitoring Yosemite National Park Yosemite National Park (NP),
California, has its own unique environmental concerns based on
its particular ecology. Air quality studies and monitoring
programs at Yosemite NP focus on ozone, nitrogen deposition,
toxic air contaminants, and visibility. Click on the tabs below
to review air quality studies and key scientific references at
Yosemite NP, as well as to access information on air quality
monitoring in the park. - Studies & Projects - Monitoring & Data
- Key References Ongoing research in Yosemite NP, California:
Ground-Level Ozone Impacts Widespread ozone injury in ponderosa
pine has been documented at Yosemite NP in several studies.
Chronic, long-term ozone exposure has reduced tree growth in
some locations (Peterson et al. 1991; Peterson and Arbaugh 1992;
Arbaugh et al. 1998). In addition to harming trees, ozone
concentrations in the parks freque