&lt;p style="margin: 0in 0in 10pt;"&gt;&lt;font color="#000000" face="Calibri" size="3"&gt;Sequoia National Park (SNP) has the worst ozone air pollution of any National Park in the United States. Ozone pollution levels in SNP are high enough to exert damaging impacts on humans, animals, and vegetation. The major source of ozone to SNP is chemical production within the nearby and ozone-polluted San Joaquin Valley (SJV), which is then transported out of the valley into the park. Emission controls to reduce ozone in the SJV have been in place for the last two decades and these controls should have had the effect of altering ozone levels within SNP. This work has two aims. First, we investigate the chemistry driving trends in ozone in SNP and link these changes to trends in ozone in the SJV. Second, we consider both the metrics and time frames that best capture ozone trends contributing to vegetative damage, as these are not well represented in assessments of human health-based ambient air quality standards over an entire ozone season. &lt;/font&gt;&lt;/p&gt;

Ozone in Sequoia National Park: Linking ozone production in the San Joaquin Valley to trends in vegetative impacts in Sequoia National Park from 2000-2016

253rd National Meeting (2017)

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