I'm convening a session at #AGU26 on behalf of the PAGES Volcanic Impacts on Climate and Society working group: Past Eruptions, Future Risk: Connecting Paleo Records to Hazard Assessment. Deadline 5 Aug. Submit an abstract and/or share: agu.confex.com/agu/agu26/pr...

New paper out today led by Marcel Kunz - 'Exorcizing Divergence in Tree-Ring Density Along the Rocky Mountains' - tree-ring density remains a strong temperature proxy in the Northern Rockies across all frequencies agupubs.onlinelibrary.wiley.com/doi/10.1029/...

My resignation letter

Whew. All signs are increasingly pointing to a significant, if not strong to very strong, El Niño event. I'll have more to say in coming weeks & months, but for now I'll just say that this is increasingly likely to become a major regional-to-global climate driver in 2026-2027.

Excited to have this paper out showing a strong coupling between Central American tree-ring oxygen isotopes and ocean–atmosphere dynamics (interbasin SST gradients, ITCZ, CLLJ... ). Many thanks to all co-authors! agupubs.onlinelibrary.wiley.com/doi/10.1029/...

At #AGU25, tree ring scientist Caroline Leland of LDEO shared her research on dshared research on climate sensitivity of wood from Siberian Pine and Larch in North-central Mongolia to improve or build upon reconstructions of long-term climate. ➡️ Lamont at AGU25: https://lamont.columbia.edu/agu25

From @AGU.org: Senators are working on legislation to save NCAR, but we need extra support for these 8 states. Your Senators in Alabama, Alaska, Florida, Louisiana, Mississippi, North Carolina, Texas, and Wyoming need to hear from you.

Upcoming atmospheric river approaching California could be attached to a “bomb cyclone”… But here ‘s the current flood fcasts (surely not the final word but), for now broadly not as dire as could be. www.sfchronicle.com/weather-fore...

An atmospheric river continues to drench the Pacific Northwest in heavy rainfall, resulting in a widespread flooding threat across western Washington. This timelapse since the beginning of the week shows the relentless plume of moisture that has soaked the region.

Please contribute! We neex broad input, different forest types, and an array of natural disturbances to see how disturbance regimes are changing.

Excited for this paper to be out! With the collaboration of met services from Central America, we evaluate in detail the biases in gridded products that arise from the underlying station data, and the effect this has on the apparent emergence of regional drying trends. Thanks to all the co-authors!

Rainfall data can be hard to come by in the tropics. @anaigmendez.bsky.social leads a new paper taking a deep dive into the quality and potential biases in gridded precipitation data in Central America. CHIRPS comes out ahead, but be wary of trends! agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Disturbance interactions have profound consequences for forest health, yet remain poorly understood. Here we use DAGs to differentiate #Synergisms, #CompoundDisturbances & #NetworkEffects and review the impacts of climate change. Final version out now! 🧪🌐🍁🌱 www.annualreviews.org/content/jour...

Join the Laboratory of Tree-Ring Research at the University of Arizona for our 2026 Dendrochronology Intensive Summer Course (DISC)! Spend 3 great weeks (May 18th to June 5, 2026) in the field, lab, and classroom learning first-hand how tree-ring research is done! ltrr.arizona.edu/summerschool

A devastating set of decisions on the part of UC leadership to withdraw support from our nationally recognized postdoc program that prioritizes research excellence combined with addressing our university public service mission. www.insidehighered.com/news/faculty...

Dr. Julie Edwards (@julieedtree.bsky.social) leads a new paper showing that high-resolution cellular-scale measurements (Quantitative Wood Anatomy) yield better temperature signals in Alaskan tree rings than even conventional MXD across all frequencies agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Thrilled our #AREES review on #Disturbance #Interactions is out! #ClimateChange = MAJOR DISRUPTER, but not how you’d expect 👀 #NewFramework: #CC effects on interactions🧪🌐🍁🌱 HUGE🙏4 legendary efforts: @rupertseidl.bsky.social @brian-j-harvey.bsky.social @julieedtree.bsky.social tinyurl.com/3p97ztr5

Climate change increasingly alters the interactions between forest disturbances. Here we present a framework for quantifying dist. interactions and compile evidence for their impacts. Led by @dudney-joan.bsky.social with @brian-j-harvey.bsky.social & @julieedtree.bsky.social doi.org/10.1146/annu...

It's been a blast kicking off my first research project in Yosemite this summer. I am so thankful to continue learning about the Sierra Nevada and for our outstanding team!

If you have cool research about climate over the last 2000 years, consider submitting your abstract to our session Climate of the Common Era at the 2025 AGU Fall Meeting #AGU25 #paleoclimate. The abstract submission deadline is Wednesday, July 30 at 23:59 EDT. agu.confex.com/agu/agu25/pr...

Excited to (finally) share my new paper on Pacific SST and western North America hydroclimate during the Holocene! TL;DR They are connected, CO2 and precession both affect hydroclimate. Thanks @xiaojingdu.bsky.social @meredithparish.bsky.social @baylorfk.bsky.social+others dx.doi.org/10.1029/2024...

The first chapter of my PhD thesis is officially published. If you're into conifers, climate change or cold acclimation then this paper is for you 🌿❄️ academic.oup.com/plphys/artic... As I wrap up my PhD this year, I'm also beginning the search for postdoc opportunities so keep me in mind

Final fieldwork of the season at Big Rock Creek in SoCal was made much cooler by the monsoon rolling in! This site is part of my project using tree rings to reconstruct atmospheric rivers in SoCal, but maybe there’s a monsoon story hiding in the wood too 👀

Now published in @agu.org Geophysical Research Letters! What happens to marine archaea when they’re hungry? And what does that mean for the TEX₈₆ paleothermometer? Full paper here: doi.org/10.1029/2025... Thanks to my coauthors and mentors for their support — and stay tuned, more is coming!

2 PhD positions in dendroclimatology! cordis.europa.eu/project/id/1... The project is centered around working up millennium-long wood anatomical datasets to reconstruct temperature. web103.reachmee.com/ext/I005/103... Deadline 30th of June. For questions, contact: [email protected]

Epic (hot!!) day on #MtFig coring bigcone Douglas-fir for @julieedtree.bsky.social amazing #NSF postdoc research! These ladies are such badasses (and such good vibes!). W/ @michelledmohr.bsky.social @olross.bsky.social Stay tuned for updates on historical patterns of atmospheric rivers in #socal!

Quantitative wood anatomy measurements for the win! This time when using subfossil wood - 'Tree-Ring Anatomy Improves the Reliability of Temperature Reconstructions Using Relict Wood' agupubs.onlinelibrary.wiley.com/doi/full/10....

Fieldwork this past weekend with the AMAZING @olross.bsky.social and Dervla Meegan-Kumar in the Cleveland National Forest. NSF-funded, I’m using tree-ring width to reconstruct atmospheric river variability in Southern California, which will help us better prepare for future storms in the region.

Can we use paleo for detection and attribution of drought without a climate model? Yes! New work led by @drkatemarvel.bsky.social, with me and some old guy. agupubs.onlinelibrary.wiley.com/doi/10.1029/...

And in another new paper out today, lead author Cari Leland shows how tree-ring proxies and wood anatomy track a transient synoptic scale cold snap across northwestern North American in the late summer (late July to early August) of 1959 www.tandfonline.com/doi/full/10....

Congratulations to @kiradharris.bsky.social who leads a new paper in Paleoceanography and Paleoclimatology on last millennium SSTs in the Gulf of California and leaf wax evidence for North American Monsoon variability agupubs.onlinelibrary.wiley.com/doi/full/10....

National Science Foundation suspends salary payments, leaving researchers unable to pay their bills www.statnews.com/2025/01/30/t... Story by @ericboodman.bsky.social

I got to write a 'Tools of the Trade’ article about quantitative wood anatomy a little bit ago. Check it out for an accessible summary of how measuring wood cells is improving our understanding of past climate!

Please repost! We're recruiting our second cohort (3-5) of #GlobalChangePostdocs @ucsantabarbara Join our vibrant and inspiring community of #interdisciplinary scholars (we love it here:)! Apply: globalchangepostdoctoralfellowship.com UCSB is an EOE, including disability/vets