期刊
ATMOSPHERIC ENVIRONMENT
卷 269, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.atmosenv.2021.118834
关键词
Ozone; Shoreline; Great lakes; Air quality; Lake breeze; Lake Michigan
资金
- Student Blugold Commitment Differential Tuition program [1400815, 1460728, 1918850]
- NSF
- EPA
- NOAA GOES-R program office
- Electric Power Research Institute (EPRI)
Daytime onshore lake breezes play a critical role in controlling ozone abundance at coastal sites around Lake Michigan, with different types of lake breezes resulting in varying ozone concentration gradients.
Daytime onshore lake breezes are a critical factor controlling ozone abundance at coastal sites around Lake Michigan. Coastal counties along the western shore of Lake Michigan have historically observed high ozone episodes dating to the 1970s. We classified ozone episode days based on the extent or absence of the lake breeze (i.e., inland, near-shore or no lake breeze) to establish a climatology of these events. This work demonstrated variable gradients in ozone abundances based on these different types of meteorology, with the sharpest ozone concentration gradients on days with a near-shore lake breeze. On 76-82% of days in which ozone reached 70 ppb for at least 1 h, a lake breeze was present. Evidence of ozone gradients from multiple observation platforms during the 2017 Lake Michigan Ozone Study (LMOS 2017) are shown for two days with different depths of lake breezes.
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