How have Divergent Global Emission Trends Influenced Long-range Transported Ozone to North America?

ABSTRACT: Several locations across the United States in non-compliance with the national standard for ground-level ozone (O₃) are thought to have sizeable influences from distant extra-regional emission sources or natural stratospheric O₃, which complicates design of local emission control measures. To quantify the amount of long-range transported O₃ (LRT O₃), its origin, and change over time, we conduct and analyze detailed sensitivity calculations characterizing the response of O₃ to emissions from different source regions across the Northern Hemisphere in conjunction with multi-decadal simulations of tropospheric O₃ distributions and changes. Model calculations show that the amount of O₃ at any location attributable to s

SUBMITTER: Mathur R 

PROVIDER: S-EPMC9580341 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature