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Jennifer Murphy

@envchemjen.bsky.social

Atmospheric chemist, professor, reader, baker,

130 Posts581 Follower585 Folgt
Jennifer Murphy@envchemjen.bsky.social · 2w ago

My mom collected some of the staple baking recipes from my childhood when I moved into my first apartment and I just realized it's been over 30 years since I have been consulting this duotang on a regular basis!

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Hannah S Kenagy@hannahskenagy.bsky.social · 2w ago

The Kenagy Lab at UMN is hiring a postdoc to join an upcoming ground-based field campaign focused on particle formation chemistry in agricultural regions. Details at z.umn.edu/farmsteadpos.... Contact Hannah (hskenagy@umn.edu) with questions!

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The Kenagy Lab (Department of Chemistry; https://kenagy.chem.umn.edu/) at the University of Minnesota is seeking a Postdoctoral Researcher to join an upcoming ground-based field campaign focused on pa...

z.umn.edu

Jennifer Murphy@envchemjen.bsky.social · last mo.

Not only did Google Maps capitulate to Trump with his Lake America nonsense, but they are constantly lying to me that westbound College St is open between Yonge and Bay. It has been, and remains, closed for construction. I tried to report the road closure and they rejected my edit. Why gaslight me?!

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Dave Sills 🍁🌪️🎶⚓☮️@davesills.ca · 3mo ago

Big milestone met for Environment Canada today as it launches its long-awaited storm-based thunderstorm and tornado warning system. It's mostly going to affect warnings received via cell phone, but it should substantially reduce the number of warnings for people not in the direct path of the storm.

Courtesy of The Weather Network. The orange polygons are for a severe thunderstorm warning while the red polygons are for a tornado warning. A hypothetical tornadic supercell thunderstorm is superimposed, with tornado near the 'hook' area on the lower left side.
Jennifer Murphy@envchemjen.bsky.social · 4mo ago

In Toronto this morning (Thursday) the sky looks slightly less hazy, but the surface pollution levels are actually twice as bad as yesterday. And the worst I can remember in 20 years of living here. If you have to breathe outside, wear a mask! 😷

Graph of air quality data over Toronto showing recent spike in PM2.5 levels to nearly 300 micrograms per cubic meter
Colette Heald@coletteheald.bsky.social · 7mo ago

Delighted to share that our review on what the COVID-19 lockdowns revealed about atmospheric chemistry was published today. What fun to write papers with wonderful colleague/friends! @jessekroll.bsky.social @envchemjen.bsky.social @chemdelphine.bsky.social pubs.acs.org/doi/10.1021/...

Atmospheric Chemistry Insights from the Global COVID-19 Pandemic: A Review

The COVID-19 pandemic and resulting reductions in worldwide emissions, associated primarily with the transport sector, provided an unprecedented opportunity to explore the response of atmospheric chemistry and composition to large anthropogenic emissions perturbations. While air quality generally improved in early 2020, this was tempered by increased formation of secondary pollutants (e.g., O3 and secondary particulate matter, PM) in many regions studied. Declines in NOx emissions were largely responsible for the changes in O3, driving decreases in O3 concentrations in remote regions and increases in urban regions due to both decreases in O3 titration by NOx and also nonlinear changes in O3 production. Lower NOx levels also increased the levels of other oxidants (e.g., OH and O3), leading to a general increase in atmospheric oxidation in polluted urban regions. This enhanced oxidation promoted additional PM formation in some regions but was generally outweighed by decreases in primary PM and other secondary precursors (SO2 and VOCs). The COVID-19 pandemic gave rise to large local perturbations in air quality but only modest reductions in the global abundance of short-lived climate forcers (including O3 and PM).

pubs.acs.org

Dylan B. Millet@dbm.bsky.social · 8mo ago

Postdoc opening: Geostationary measurements of atmospheric chemistry Join us! Our group seeks a postdoc to work on space-based measurements of atmospheric chemistry with the new generation of geo-IR satellite instruments. See z.umn.edu/b5iz for details & contact me (dbm@umn.edu) with questions!

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Postdoctoral Associate: Geostationary measurements of atmospheric chemistry Join us! Our atmospheric chemistry group at the University of Minnesota (UMN) is seeking applications for a Postdoctoral A...

z.umn.edu