Assistant Professor of Environmental Engineering at UIUC https://ctessum.cee.illinois.edu/https://bsky.app/profile/ctessum.bsky.socialhttps://bsky.app/profile/ctessum.bsky.social/post/3mjpljtxfn22kExcited to share Shiyuan Wang's paper "International trade and air-quality-related mortality" published in Nature Communications! https://doi.org/10.1038/s41467-026-71408-w17 Apr 2026 18:46 +0000at://did:plc:plyulgd3khfkddgp7jxem35o/app.bsky.feed.post/3mjpljtxfn22khttps://bsky.app/profile/ctessum.bsky.social/post/3mh7y6ryhhc2jJust finished a workshop about equation-based air quality modeling using earthsci.dev at IIT Bombay! Thanks to Srinidhi Balasubramanian for hosting!17 Mar 2026 03:00 +0000at://did:plc:plyulgd3khfkddgp7jxem35o/app.bsky.feed.post/3mh7y6ryhhc2jhttps://bsky.app/profile/ctessum.bsky.social/post/3lobvu6zuws24We have a new preprint out! https://essopenarchive.org/doi/full/10.22541/essoar.174534373.33273911 In it, Xiaokai Yang, Lin Guo and I explore a method for making atmospheric chemistry surrogate models which are guaranteed to not have exploding errors. This is a step toward generally useful machine-learned models of the atmosphere.03 May 2025 17:54 +0000at://did:plc:plyulgd3khfkddgp7jxem35o/app.bsky.feed.post/3lobvu6zuws24https://bsky.app/profile/ctessum.bsky.social/post/3lcjg7ss65c2bWe have a new paper just published about using machine learning to estimate uncertainty in atmospheric chemistry modeling! http://dx.doi.org/10.1029/2024JH00035805 Dec 2024 00:33 +0000at://did:plc:plyulgd3khfkddgp7jxem35o/app.bsky.feed.post/3lcjg7ss65c2bhttps://bsky.app/profile/ctessum.bsky.social/post/3kxesh4yxms2mWe have a new preprint led by student Lin Guo! It is about uncertainty quantification in atmospheric chemistry modeling: arxiv.org/abs/2407.09757 https://arxiv.org/abs/2407.0975716 Jul 2024 04:51 +0000at://did:plc:plyulgd3khfkddgp7jxem35o/app.bsky.feed.post/3kxesh4yxms2mhttps://bsky.app/profile/ctessum.bsky.social/post/3kc2lw5gy3o2wI was quoted in this article! https://www.npr.org/2023/10/17/1205592486/major-u-s-science-group-lays-out-a-path-to-smooth-the-energy-transtion18 Oct 2023 21:39 +0000at://did:plc:plyulgd3khfkddgp7jxem35o/app.bsky.feed.post/3kc2lw5gy3o2whttps://bsky.app/profile/ctessum.bsky.social/post/3k7wpl3vael2uWe have a new preprint out today! arxiv.org/abs/2309.11035 We find that replacing the advection operator with a machine-learned surrogate may help the model run faster and/or be more accurate in certain situations. https://arxiv.org/abs/2309.1103521 Sep 2023 21:43 +0000at://did:plc:plyulgd3khfkddgp7jxem35o/app.bsky.feed.post/3k7wpl3vael2uhttps://bsky.app/profile/ctessum.bsky.social/post/3k7ugxvnnsy2mI'm quoted in this article! (Although the quote is me saying something that pretty much everyone already knows) https://www.nytimes.com/2023/09/20/climate/wildfire-smoke-air-pollution.html21 Sep 2023 00:04 +0000at://did:plc:plyulgd3khfkddgp7jxem35o/app.bsky.feed.post/3k7ugxvnnsy2m