A new study led by CIRES/CU Boulder’s Max Elling proposes a practical framework to help identify how model choices, including physical parameters and experimental setups, create performance tradeoffs that affect metrics directly relevant to nature and society.
link.springer.com/article/10.1...
Posts by Kris Karnauskas
AGU is now accepting applications for Editors-in-Chief across five publications, with terms starting Jan 1, 2027. These roles help shape editorial standards, research quality, and peer review in Earth & space science. Apply by May 1, 2026.
buff.ly/8Mxy8vq
It's been a very warm and dry winter in Boulder, CO.
Data from GHCN-Daily since 1900.
#COwx
Globally, no single day in 2025 was cooler than its 1991-2020 average.
climate.copernicus.eu/global-clima...
🌍 Our new @natclimate.nature.com study, led by @xuyanbin.bsky.social shows climate variations like El Niño don’t just affect weather — they can shape long-term human health and economic outcomes. Proud to contribute on the climate science side.
www.nature.com/articles/s41...
#ENSO #PublicHealth
Sign up to meet with an AGU Editor December 16-18th AGU Central Exhibit hall
Thinking about publishing your work with AGU?
Sign up for a 15 minute 1-on-1 meeting with an AGU editor at #AGU25 for advice on finding the right journal and submitting your work!
🔗 buff.ly/89flzjc
#AGUPubs #EarlyCareer
Need a little help! Student seeking high-freq (at least daily), high-res (~10 km or less) gridded ~surface ozone & PM2.5 observations. Next best thing would be hourly station-level data of surface O3 and PM2.5 with decent spatial coverage across the globe. Anyone out there know of such a dataset?
We ran 15 experiments using models from four institutions (MPI, NASA/GISS, NCAR and NOAA/GFDL).
Key Points
ColdBlobMIP: A Multi-Model Assessment of the Atmospheric Response to the North Atlantic Warming Hole
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
A global map of the Pacific Ocean showing surrounding continents with orange colors highlighting warmer sea surface temperatures.
Ocean scientists are one step closer to understanding the connection between warming in the Eastern Tropical Pacific Ocean and its impact on weather and climate. The new study by @oceanclilmatecu.bsky.social and partners in @agu.org Earth's Future is spotlighted here! buff.ly/Tcbj2fq
Today, we published a study long in the making on how upper and subsurface tropical Pacific waters responded (and maybe will adjust) to warmer global climate. Here’s the story of how we got here after 15 years. many authors but shout out @jfarmersalmanac.bsky.social
🌊
www.science.org/doi/10.1126/...
Graphic of the AMS x AGU U.S. Climate Collection with a photo of iceberg by pexels.
The "U.S. Climate Collection" is now open for proposals! A joint initiative of AMS and @agu.org, the Collection will help sustain the momentum of U.S. climate assessment research.
Learn more and submit your proposal: bit.ly/46JuY71
📢 Submissions are now open for the U.S. Climate Collection, a joint @theAGU + @ametsoc initiative.
This special collection will publish U.S.-focused climate assessment science that’s free to read, ensuring rigorous, accessible science informs decisions for years to come.
🔗 buff.ly/1tHUSLC
"my mentee sent an email thanking me for my support and guidance, which she said helped increase her confidence. She probably doesn’t know that she helped increase my confidence, too."
www.science.org/content/arti...
"mentorship is a two-way exchange that energizes and inspires all participants to become active agents of change"
tos.org/oceanography...
That's when the magic happens, and you know it. Do it for one more day!
Editorial published today by the Editors-in-Chief of the @agu.org journals:
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
The visible sharpness of the transition between calm and windy is incredible.
Big El Niños 🌊 usually come with big 🌎 teleconnections.
The one in 2023/24 didn't. Why?
Rainfall anomalies in the tropical Pacific were suppressed due to greater warming in Indian and Atlantic Oceans.
www.nature.com/articles/s43...
Led by Lei Zhang, with @matcollins.bsky.social
@cires.colorado.edu
Beautiful outflow boundaries making new storms in their wake. #cowx
A new observational benchmark for equatorial upwelling
@usclivar.bsky.social Research Highlight
Our general tendency to underestimate equatorial upwelling may offer a clue into the disagreement between historical trends and climate model simulations of Pacific SSTs.
usclivar.org/research-hig...
A rocky, desert landscape with mountainous terrain along the horizon. In the top left, there is a blue box with the CIRES logo and white text: News. Groundwater levels in the US Southwest more sensitive to climate shifts than in the Pacific Northwest.
Groundwater levels in the Southwest & Pacific Northwest responded differently to precipitation changes during the Last Glacial Termination, according to new research led by @whoi.edu's Alan Seltzer & co-authored by CIRES Fellow Kris Karnauskas.
Read the story: cires.colorado.edu/news/groundw...
Climate.gov, a major US government website supporting public education on climate science, will likely shut down after almost all of its staff were fired. What would be worse is if the website were co-opted to publish climate denial content.
Deadline extended by one week... applications due June 22!
@agu.org @eos.org
New work led by former CIRES Visiting Fellow Chris Little uncovered 3 distinct spatial patterns in Pacific Ocean tide gauge sea level records. @oceansclimatecu.bsky.social @colorado.edu
www.science.org/doi/10.1126/...
Sea level and climate variability in the Pacific Ocean
Work led by former @cires.colorado.edu Visiting Fellow Chris Little uncovered 3 distinct spatial patterns in Pacific Ocean tide gauge sea level records...
cires.colorado.edu/spotlights/s...
185 departures in a day. Up about 50% from this time in 2021. (Nothing to do with the holiday weekend. Last Thursday was just an average day in terms of traffic.)
The vast majority are loud, slow-moving, fixed-wing propeller planes flying a few hundred feet above dense residential neighborhoods, parks and schools before returning to RMMA so they can do it again.