Postdoc opening: airborne NH3 measurements Join our team! The UMN atmospheric chemistry group is recruiting a postdoc to collect and analyze airborne NH3 measurements as part of NASA FarmFlux. See z.umn.edu/aw67 for details, & contact Julieta ([email protected]) and I ([email protected]) with questions!

We have developed some layer on BLM website for the air quality forecast: experience.arcgis.com/experience/9...

Hailstones in my backyard-right here in Interior Alaska. @alaskawx.bsky.social could this be the ‘new normal’ driven by rapid Arctic warming?

Trying to recruit a PhD student or a postdoc working on aerosol chemistry/physics. Please spread the word.

Getting ready for a field campaign in Alaska to study new particle formation in the North American boreal forest. We’re calling it DENALI -Dynamics of Emissions, Nucleation, and Aerosols to predict Land-atmosphere-climate Interactions - a brilliant name suggested by a great colleague from Canada!

It is amazing how much new research this mysterious "discrepancy" has led to!

This is really sad news. NOAA GFDL is one of the world's leading climate modeling centers, home to exceptional scientists. If anyone directly affected needs support, I’m happy to help. www.science.org/content/arti...

Disappointing and needs to be reversed. The benefits of air monitoring far outweigh the costs. U.S. State Department Shuts Down Pollution Monitoring Abroad www.nytimes.com/2025/03/04/c...

Friendly reminder: if you are waiting on something from a US-based scientist/reviewer/editor, please realize that we're barely making it through each day putting out non-stop fires and trying not to collapse into tears. We're trying our best, but things will take longer right now. Give grace.

Last Tuesday, I was set to give a talk on 'climate change in the Northeast' at a retirement home but had to cancel due to hourly job threats. After nearly two weeks of overwhelming uncertainty, today it happened. I was fired from my dream of working at NOAA. I'm so sorry to everyone also affected.

1. Today the NIH director issued a new directive slashing overhead rates to 15%. I want to provide some context on what that means and why it matters. grants.nih.gov/grants/guide...

🚨BREAKING. From a program officer at the National Science Foundation, a list of keywords that can cause a grant to be pulled. I will be sharing screenshots of these keywords along with a decision tree. Please share widely. This is a crisis for academic freedom & science.

Received this email from my chair tonight (🧵, 1/6): "The DOE has issued new guidance indicating that, until further notice, there will be delays in any funding actions. Here’s what this means for projects pending or already awarded by DOE: 1. Pending Proposals: Awards will be postponed. ...

I don't know if the ASCENT network has a presence on BlueSky yet, but I got this from Twitter. They're making their data available from the US supersites in light of the LA fires. ascent.research.gatech.edu/database

Glad to see our paper was highlighted in The Hindu newspaper. Thanks to @shahzadgani.bsky.social for his insights. The paper can be accessed at www.science.org/doi/10.1126/....

Will be in AGU next week with five presentations from my group: 1. Monday using Pandora to understand model ozone bias under heatwave (agu.confex.com/agu/agu24/me...) 2. Tuesday Inter-comparison of brown carbon and black carbon measurements: (agu.confex.com/agu/agu24/me...) (1/2)

Great to see two Nature papers out today exploring the role of isoprene in new particle formation-and they disagree on important details! Nice write-up by @jamesallanatmos.bsky.social www.nature.com/articles/d41...

Highly recommend this to Alaska folks!

Interested in using satellite data for health and air quality? Join me at the HAQAST Showcase to learn about team projects aimed at solving real world problems. January 28, 2025 in Washington DC and online Free! haqast.org/haqast-showc...

No more "climate change" or "global warming" in future proposals? What are the alternatives?

NAIS is up running and new trailer is in place. Getting ready for a new field campaign in North American boreal forest.

It also highlights an interesting aspect of using a priori profiles in satellite retrievals: if the actual atmospheric profiles deviate too much from the a priori profiles, the retrieval process may fail. This could apply to many retrievals for atmospheric compoistion.

Voted.