Modeled delta O3 as the difference in O3 between Zion and source. The NOx‐VOC sensitivity transition is generated from the isopleth ridgeline. The dotted curve shows the observed delta O3 from the June 2nd 17 CDT case study. Credit: M. Vermeuel

On November 18 LADCO issued an RFP for analyzing the atmospheric chemistry of ozone formation along the western shoreline of Lake Michigan. The objective of the study is to determine the sensitivity of ozone formation in Chicago and along Wisconsin’s Lake Michigan shoreline to changes in ambient NOx and VOC concentrations. The principal focus of this study is on current ozone-NOx-VOC sensitivity along the western shore of Lake Michigan, including the spatial variability of such sensitivity within this region.


Existing ground-based and remote sensing data, along with complementary modeling analyses will be used to gain insights into how the sensitivity of ozone formation to emissions has changed over time within the region.  We anticipate that this work will be complementary to ongoing work by LADCO, WI DNR, and groups involved with the 2017 Lake Michigan Ozone Study (e.g., Vermeuel et al) to evaluate ozone-NOx-VOC sensitivity in the region.


Proposals are due to LADCO on December 13, 2019.


See the LADCO RFPs page for details on this project.

About Author

Zac Adelman
Zac is LADCO's Executive Director. He's an environmental scientist with 20+ years experience in emissions and air quality modeling.

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