Always a delight working on papers with friends! We took a look at the literature and revisited our previous ideas about what we might learn about atmospheric chemistry from COVID-19.

Oh my god, the alt text is a gift. 😹

Last week's record-setting heat took a major toll on Colorado's snowpack (which was already in bad shape). We're currently sitting at 44% of average with ~2 weeks to go until our average peak. Little to no precipitation is expected over the next 7 days. #cowx

Wondering why NIH and NSF aren't making new grants? We explain what's happening at OMB. www.science.org/content/arti...

My latest for @science.org on the fraught future of NCAR as NSF's deadline nears. It can still go so many ways.

holy shit

A couple of the wildest graphs I recall making. It's been #warm... at Fort Collins the warmest climatological winter by nearly 4°F! #cowx 🌡️

Hej CATCH community!👋 Don't miss our next seminar by Jennifer Murphy @envchemjen.bsky.social (Uni Toronto) on March 18th, 15:00 UTC on "Sources and fate of atmospheric ammonia in the Arctic". Zoom link & calendar entry as usual on 👉 www.catchscience.org #CATCHscience @igac-ecr.bsky.social

The National Science Foundation is systematically being converted to the National AI and Quantum Research Foundation. “I see it as the administration exerting political control over what has traditionally been NSF’s ability to fund the best science.”

Mine in this week’s @newyorker.com

The (Canadian) Gen X urge to wish I was I was in Sherbrooke now…

I am so excited about this paper! Luka Mamić was a visiting PhD student who studied remote sensing and data tools at Sapienza U in Rome - he was curious about air pollution interactions with crops and game to try some experimental science... pubs.rsc.org/en/content/a...

Directorate for Geosciences 5/11

Really excited to share this paper from Mj Riches @chemj.bsky.social showing a humidity dependence on VOC emissions from ponderosa pines. At higher RH, emissions increase substantially - and we explore a few possible mechanisms in the paper. agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Movie review from Guardian on Melania.

Yesterday it was cows using tools, today its penguins using satellite imagery.

Finally, some good news!

Oh my god she uploaded a slow motion video and it's amazing. He's just like me fr running as best he can and still going backwards over and over!

Among all the eye-popping numbers in the December summary linked below, it's also the first public appearance of this annual weather/climate visualization which I am quite fond of. Larger version at climate.colostate.edu/co_cag/index... in case resolution here isn't so good. #cowx

everything about this is delightful (except the trail of destruction left behind): www.theguardian.com/world/2026/j...

I usually love seeing my friends quoted in the NYTimes, but the reasons for @marinavance.bsky.social being the focus of this story are so sad. The damage to US science is terrible.

The winds in Colorado/Wyoming are insane. @mikezaccardi.bsky.social

It’s not Black Friday, it’s Bobcat Friday!! Greetings from a rare backyard visitor…

ok this one’s a little niche but if you get it, you get it

Thanks to Erica Hartmann for leading a newly published paper, "Ten questions concerning indoor dust." What is it? Where does it come from? How does it mediate environmental exposures? How does it affect chemicals indoors? www.sciencedirect.com/science/arti...

A Sharon Begley byline, almost 5 years after her death. Upon hearing the news James Watson had died, a STAT reporter said in our Slack, "I wish I could read what Sharon would have written." Incredible news: Sharon in fact did pre-write a Watson obit. And it is masterful and excoriating. 🧪🧬🧫

Congratulations to John Mak and all of GOTHAAM. The NSF-NCAR video summary really captures the magic of atmospheric chemistry

This summer's GOTHAAM campaign to unravel the determining chemistry that affects air quality in the complex NYC metropolitan area - Led by John Mak and supported (A LOT) by NSF-NCAR Independent federal #science safeguards human health & the environment @ncar-acom.bsky.social

Is this accurate?!? Re Harvard CCB "Chemistry and Chemical Biology will go down to four or five admits, one of the professors added."

Devastated that I forgot to submit my mascot name suggestion in time for OB3 (One Big Beautiful Bill)

Hey Colorado residents, particularly people in Fort Collins, but also those who are somewhat near: my sister and brother in law are running a study on an easy, portable method to help maintain indoor air quality during adverse outside events (like smoke or pollution).

No words

I think this explains what is going on with papers at JGR-Atmos - I have two stuck in reviewer purgatory for >90 days!?! Anyone else?

alarming mention of mass spec in this article about Congressional requests for EPA to track mifepristone in wastewater #chemsky ⚗️🧪 www.nytimes.com/2025/10/10/u...

So proud to share this new paper from my research group in collaboration with NIST scientists during the CASA Field Study! We look at particle transport in a house and compare 3 models: a box model, an empirical model, and CONTAM. www.sciencedirect.com/science/arti...

New paper on what drives organic aerosol in NY - anthropogenic chemicals have emerged as 2x traffic sources, while wildfire smoke is persistent and substantial - and we see evidence that it enhances biogenic SOA.

Spooky season approaches, so I'm going to repost some of my Halloween comics from years past.

I do not want the video. I will never watch the video. I usually won’t even give the video the effort of complaint. I just want to read the news story. Give me the text. This would be my Ted Talk but that would be text too.

NSF today released instructions for the next round of applicants to its Graduate Research Fellowship Program. A key group—second-year Ph.D. students—is no longer eligible, and students who are still able to apply will face an unusually narrow timeframe. https://scim.ag/3KlQkQk

A rare bloom of Cosmo, CSU’s corpse plant, gave my group (Rose Rossell and @chemj.bsky.social) the chance to study corpse flower emissions in a fun collaboration with Tofwerk. Turns out to be an interesting, if stinky, story of pollination chemistry…

This was the story I needed today www.bbc.com/news/article...

Atmospheric Physics faculty position at Univ of Toronto - help us make use of satellite and aircraft capabilities that are on their way in Canada! jobs.utoronto.ca/job/Toronto-...

The Department of Biology at Colorado State University is hiring an Assistant Professor in the area of plant-microbe interactions! Please spread the word! jobs.colostate.edu/postings/165...

So it’s been about four years in the making, but #GOTHAAM is finally happening. We’re two weeks in with a phenomenal team - and some impressive datasets! Three Farmers flew today and we had a blast taking transects of urban pollution plumes and then studying stratification over the ocean!

A rule of thumb for tsunamis is that in open ocean, they move at similar speeds to commercial airliners. If you're ever curious how long it would take for a tsunami to get from one place to another, look up the duration of a similar-length flight.

Bird sounds.

I am so sad to see this. This organization is essential for understanding pollution and its impacts. The people who work there are incredibly dedicated, experienced, and world leaders. This is incredible loss of national investment and capacity. www.eenews.net/articles/epa...

This is such a loss. I've served on the selection committee for this program for the past three years, because it has funded so many incredible people doing such important research over the years. It should be expanding to meet the new challenges of climate change, but instead is totally defunded.

Another day testing the limits of resilience. The Alexandria NSF building was designed for the NSF merit review process (gold standard), complete with a floor devoted to panels. Now we aren’t allowed to have in person panels. The loss of US science leadership will haunt this country for decades.