Kelsey Malloy

An atmospheric general circulation model you can run on a Python Jupyter notebook?! Heck yeah! Check out this project- both an educational tool for undergraduates/graduate students, and a research tool for scientists interested in idealized climate modeling.
journals.ametsoc.org/view/journal...

We're hiring! We have an open search for an Assistant Professor in physics of the ocean and/or atmosphere in Columbia's Dept. of Earth and Environmental Sciences. Please circulate this information to good candidates, and apply yourself if you are one! Ad & link to apply: apply.interfolio.com/173819

CNN news story, Climate.gov will re-launch under new URL thanks to a secret team of web ninjas

Curious what we are all about?
Click the link: www.cnn.com/2025/08/28/c...

Congrats, Suzana!! Well deserved!

Sad to see that leadership didn’t approve of my suggested post language (assuming since this is what is posted) that I submitted on my last day in May as the social media manager.

Allow me share some of our team’s kind words here instead:

Our final updates have been posted to the Climate.gov website, and this will be our final post to our social media channels.

Table showing FY26 budget numbers for NOAA from the Trump Administration.

Trump's Budget is out. For NOAA, it's exactly what the previous passback document showed.
Trump administration eliminations NOAA's Office of Oceanic and Atmospheric Research in its ongoing fight against science and reality.

www.govinfo.gov/content/pkg/...

Bonus plot for Bluesky folks: Seems like AO is part of the story for this season. The teal dot is Mar 2025 (w/ prelim SPC report data), modestly AO+, which can be a subseasonal signal for increased tornado activity, i.e., top-left quadrant La Niña/AO+ does feature a lot of big tornado months...

How do a climate-scale patterns, like La Niña, influence extreme weather events, like tornado outbreaks? I break it down in this ENSO Blog post, plus discuss this hyperactive 2025 season in particular. 🌪️

Graphic for the Weather & Climate Livestream.

Federal weather & climate science is under threat. Starting TODAY at 3:00 PM ET, join a coalition of scientists--including AMS leaders--for a 100-hour livestream. Learn what federal science does for you, ask questions, and help build awareness to "Save Our Forecasts": wclivestream.com

A major loss to our understanding of how extreme weather events are affecting us. There are 3 alternative databases I will be using:
Gallagher Re: www.ajg.com/gallagherre/...
Aon: img.clients.aonunited.com/Web/Aon5/%7B...
EM-DAT: www.emdat.be

I usually include NOAA NCEI billion-dollar weather/climate disaster figures in my talks. Over the last couple months, I've spent extra time highlighting who makes them and why it's so valuable, including "while we still have this data..." to convey my worry. Sadly I guess my fears were warranted.

Surface impacts of the Quasi Biennial Oscillation Abstract. Teleconnections between the Quasi Biennial Oscillation (QBO) and the Northern Hemisphere zonally averaged zonal winds, mean sea level pressure (mslp) and tropical precipitation are explored....

Schematic adapted from Gray et al. (2018) - acp.copernicus.org/articles/18/...

Just kidding, I guess bluesky doesn't allow animated gifs yet? Guess you'll have to click on link to see!

How QBO affects weather/climate patterns can be confusing, but @jorgelgf.bsky.social tries to break down the main QBO teleconnection routes in this post. As usual, we had fun with graphics... here's an animated schematic:

Rapid Response Bridge Funding Program In the face of recent abrupt shifts in federal funding for education research, including large-scale terminations of National Science Foundation (NSF) research grant awards, we have developed a rap...

The Spencer Foundation is offering rapid response bridge funding for those who lost NSF research grants.

www.spencer.org/grant_types/...

The canceled grands are shock and awe, but the real damage will come from the long-term (massive) reductions in funding to the entire US research ecosystem and the defunding of entire fields and initiatives for training, growing, and diversifying the research workforce.

✨ Explore NCDP's new map application that examines how natural hazards, including tornadoes, wildfires, sea-level rise, and tropical cyclones, may be influenced by climate change. Read the full story: ow.ly/8sro50VFP57
Map application: bit.ly/nhccp

@climate.columbia.edu #climatechange #earthday

The gap between where people live and where insurance remains available is widening across the U.S. We explore this in our recent paper, “The Growing Void in the U.S. Homeowners Insurance Market: Who Should Bear the Rising Cost of Climate Change” co-authored with Ian Gray @stevebowen.bsky.social

Trump seeks to end climate research at premier U.S. climate agency White House aims to end NOAA’s research office; NASA also targeted

BREAKING from @science.org: The Trump admin is seeking to kill nearly all climate research at NOAA, its climate science agency.

Its near-final budget proposal would end all NOAA research labs, academic institutes, and regional climate centers. And it wants to fully end the NOAA Research division.

Ending Cooperative Agreements’ Funding to Princeton University On Tuesday, April 8, 2025, U.S. Secretary of Commerce Howard Lutnick announced that nearly $4 million in funding is ending to Princeton University after a detailed, careful, and thorough review of the...

Get this: Commerce is slashing $ to Princeton's world-renowned climate research b/c modeling changes to Earth systems is "contributing to a phenomenon known as 'climate anxiety,' which has increased significantly among America’s youth."

No research, no problem! www.commerce.gov/news/press-r...

Here are just some of the websites that will go dark at Midnight because of this cancelled contract.
research.noaa.gov
epic.noaa.gov
globalocean.noaa.gov
cpo.noaa.gov
seagrant.noaa.gov
testbeds.noaa.gov

👀

NOAA merges Climate Prediction Center with another unit, reflecting climate anxiety The move reflects concerns over the Trump administration's sensitivity to CPC's title.

Scoop(let): NOAA is folding the Climate Prediction Center in with the Weather Prediction Center, partly so CPC doesn't stand out so much with the word "climate." (CPC does not study/predict climate change so much as El Niño/La Niña, seasonal climate.) www.axios.com/2025/03/27/n...

Aaand an example of how the GEFS index looks for Spring 2013. Chiclet plots can be fun/pretty. ✨

GEFS has some skill into week 2 at times, particularly for CONUS-wide tornado outbreak activity, and particularly for winter and spring. Forecast skill in U.S. outbreak activity is most limited by forecast skill in conv. precip.

An outbreak index based on conv precip, SRH, and CAPE has seasonal cycle biases, which we can correct via a post-calibration scaling. This can extend skill a couple days in some cases!

GEFS has a systematic low-CAPE bias, which we are not sure has been documented before, especially in the context of how that might affect convective storm representation/skill.