Last week to submit your AGU abstract by Aug 5th! If you have cool insights in (paleo)climate and (paleo)environmental changes of the Indo-Pacific region, please consider sharing your cool science in our PaleoSEA session (5th year and counting!). Submit here: tinyurl.com/paleoSEA2026

Excited to see this review paper published! OpenAccess: doi.org/10.1029/2025... We provide an updated view on the applications of archaeal lipids as environmental proxies. Shoutouts to our co-lead authors @climategordon.bsky.social and @lipidorama.bsky.social for spearheading on this.

Wow - such a cool image from Artemis II. I love seeing the atmosphere on these sorts of images - such a fragile looking layer of gas but so important to all life on our planet

Introducing "TEXAS" — a PSM for #TEX86! Culture & mesocosm data constrain T response above 30°C. Ring Index brings culture/mesocosm GDGTs into agreement with coretops. Not linear, not exponential — the T–GDGT relationship follows a logistic S-curve. Preprint: tinyurl.com/2kfadt9p Stay tuned!

Congratulations to Trang Tran (from the @leafwax.bsky.social lab along with @paleolipidrr.bsky.social) - Biomarker Constraints on Indo-Pacific Warm Pool Temperature During the Late Pleistocene: The Role of Orbital Forcing agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Biomarker Constraints on Indo‐Pacific Warm Pool Temperature During the Late Pleistocene: The Role of Orbital Forcing

Orbital-scale IPWP SST records show a dominant 100 kyr cycle and are in phase with greenhouse gas and ice volume changes U37K′ ${\mathrm{U}}_{37}^{{K}^{\prime }}$ and Mg/Ca records have a seasona...

agupubs.onlinelibrary.wiley.com

📣 Register & join CESM Paleoclimate Working Group Meeting on Feb 12 Hybrid community meeting on paleo modeling, proxy data, & model–data integration. Talks cover deep-time, isotopes, community efforts & coordination Register for virtual link www.cesm.ucar.edu/events/worki... @ncar-cgd.bsky.social

Really excited to see this paper out!! Led by @vtcoop.bsky.social we show that if you use cold and warm paleoclimates together, you can reduce uncertainty in Earth's climate sensitivity by quantifying the pattern effect and more precisely constrain future climate change www.pnas.org/doi/10.1073/...

Paleoclimate pattern effects help constrain climate sensitivity and 21st-century warming | PNAS

Paleoclimates provide examples of past climate change that inform estimates of modern warming from greenhouse-gas emissions, known as Earth’s clima...

pnas.org

Analysis of a sediment core from an ancient lake at Olduvai Gorge reveals that human ancestors living between 1.9 and 1.8 million years ago would have experienced a stable terrestrial ecosystem with a consistent mix of woodland and grassland. In PNAS: https://ow.ly/bxHM50XStFl

The latest unhinged threat from the Trump administration would destroy the best climate modeling center in the world. It would also be a blow to US researchers (including me) who depend on NCAR's modeling expertise and educational training programs for students. #SaveNCAR www.cnn.com/2025/12/17/c...

The Trump admin is closing a critical climate research center. Officials believe it’s really trying to punish a governor | CNN

The Trump administration announced plans Tuesday to shut down the National Center for Atmospheric Research, an organization responsible for improved weather models to tools that aid hurricane safety. ...

cnn.com

Our new preprint review on archaeal lipids (GDGTs) led by @lipidorama.bsky.social and @climategordon.bsky.social are live! Fresh updates on these amazing lipids and their environmental applications, from the 2nd int'l GDGT workshop (led by @cindydejonge.bsky.social, Francien Peterse & David Naafs).

We're hiring! I'm recruiting a Postdoctoral Research Associate in climate & paleoclimate modeling of the tropical Americas. Come obsess over the tropical rain belt with me! :) Please share w/folks who may be interested. Ad here: wustl.wd1.myworkdayjobs.com/en-US/Extern...

Postdoctoral Research Associate - Earth, Environmental, and Planetary Sciences

Position Summary The Climate and Paleoclimate Lab in the Department of Earth, Environmental, and Planetary Sciences at WashU in St. Louis seeks a Postdoctoral Research Associate in tropical climate/pa...

wustl.wd1.myworkdayjobs.com

Our GDGT Cookbook paper is out now in Biogeosciences! @egubg.bsky.social Thx Peter Bijl and @kasiasliwinska.bsky.social in spearheading on this. Hope it will help people who study #TEX86 for a bit! Proudly present Figs 1 and 4 that I made for the paper 😎 Great pleasure working with y'all!

Dr. Nina Davtian (she/her/hers)@ninadavtian.bsky.social · 9mo ago

My co-authored marine GDGT « cookbook » review paper led by Peter Bijl 👨‍🔬 and @kasiasliwinska.bsky.social 👩‍🔬 is now published in @egubg.bsky.social! doi.org/10.5194/bg-2... Again, I am so happy to be the @cerege.bsky.social @climatecerege.bsky.social expert on #GDGTs! @egu.eu 🧪 ⚒️ 🌊 #PaleoSky (1/3)

This newly published study is in favor of a (further) consideration of isoGDGT-0 and crenarchaeol in addition to isoGDGT-1 to isoGDGT-3 and crenarchaeol isomer for paleo-reconstructions. Siqi Zhao et al. (2025) @commsearth.nature.com doi.org/10.1038/s432... 🧪 ⚒️ 🌊 👩‍🔬 #PaleoSky #GDGTs #TeamArchaea

Temperature-dependent spatial and temporal trends in archaeal lipid distributions - Communications Earth & Environment

Isoprenoid glycerol dialkyl glycerol tetraethers, an archaeal lipid, are linked to global carbon dioxide concentrations and temperature dependent structural properties regulate their global spatial di...

doi.org

We are pleased to have @cavemangriff.bsky.social and Sam Bova as invited speakers for our 4th #PaleoSEA session at #AGU25. Last week to submit abstract: tinyurl.com/paleoSEA2025 AGU Student Travel Grant: www.agu.org/honors/fmstg

Ronnie Rattanasriampaipong@paleolipidrr.bsky.social · last yr.

Calling all (paleo)climate thinkers, data wranglers, and storytellers of the Earth system! Join us for our 4th #PaleoSEA PP030 – Southeast Asia and the Indo-Pacific: Past, Present, and Future Climate and Environment at #AGU Fall Meeting 2025 in New Orleans, Louisiana. (1/2) @syiwang.bsky.social

I hope a journalist on the climate beat will report on this - this may be only one piece of the general awfulness that is happening to federal science, but the NOAA Climate and Global Change Fellowship has trained many of the current leaders in weather and climate: cpaess.ucar.edu/cgc/current-...

Jessica Tierney@leafwax.bsky.social · last yr.

As of today, all current NOAA Climate and Global Change postdoctoral fellows have been furloughed due to the Dept of Commerce not releasing the funding for the program. In addition no new Fellows were awarded this year. cpaess.ucar.edu/cgc

This fellowship was a huge part of the reason I am continuing to do climate science, and it has supported so many incredible people. These effects on early-career researchers, who do some of the most impactful work, is going to have long-lasting implications for science and scientists.

Jessica Tierney@leafwax.bsky.social · last yr.

As of today, all current NOAA Climate and Global Change postdoctoral fellows have been furloughed due to the Dept of Commerce not releasing the funding for the program. In addition no new Fellows were awarded this year. cpaess.ucar.edu/cgc

The Trump assault on science is an assault on scientists - an assault on their careers and dreams, their lives and their families. It is a waste of training and talent. It impoverishes all of us.

Jessica Tierney@leafwax.bsky.social · last yr.

As of today, all current NOAA Climate and Global Change postdoctoral fellows have been furloughed due to the Dept of Commerce not releasing the funding for the program. In addition no new Fellows were awarded this year. cpaess.ucar.edu/cgc

The Dept of Commerce has forced the NOAA C&GC program (which supported my postdoc) to furlough their postdocs. Postdocs are at a precarious career stage - folks move across the country/world, often w/o much of a local support network

Jessica Tierney@leafwax.bsky.social · last yr.

As of today, all current NOAA Climate and Global Change postdoctoral fellows have been furloughed due to the Dept of Commerce not releasing the funding for the program. In addition no new Fellows were awarded this year. cpaess.ucar.edu/cgc

I was also a Fellow. This program brought me from my home country of Australia, providing me resources+networks that paved my career path to becoming a full professor in a US institution. Having now worked with many undergrad/grad/postdocs, I have witnessed CGC benefits to society at large.

Jessica Tierney@leafwax.bsky.social · last yr.

As of today, all current NOAA Climate and Global Change postdoctoral fellows have been furloughed due to the Dept of Commerce not releasing the funding for the program. In addition no new Fellows were awarded this year. cpaess.ucar.edu/cgc

One of the things that makes this Fellowship special is that unlike NSF fellowships it is open to non-citizens, with the aim of retaining climate science talent in the US. The furlough creates significant problems for non-US postdocs in how it complicates visa status 😳

As of today, all current NOAA Climate and Global Change postdoctoral fellows have been furloughed due to the Dept of Commerce not releasing the funding for the program. In addition no new Fellows were awarded this year. cpaess.ucar.edu/cgc

I am one of the people who have been furloughed. And just to deal and prepare our backup plans for this unfortunate event is mentally taxing. I hope that we are getting out of this series of unfortunate events soon.

Lily Dove@solilyquy.bsky.social · last yr.

The Secretary of Commerce's new policy requiring his personal review of all NOAA contracts over $100,000 is directly harming American science. 🧪 How do I know? Because this morning, twelve of America's rising leaders in climate science (including myself) were furloughed.

Calling all (paleo)climate thinkers, data wranglers, and storytellers of the Earth system! Join us for our 4th #PaleoSEA PP030 – Southeast Asia and the Indo-Pacific: Past, Present, and Future Climate and Environment at #AGU Fall Meeting 2025 in New Orleans, Louisiana. (1/2) @syiwang.bsky.social

Another cool paper coming out of @amglab.bsky.social. Led by Tanja Wald, here we present basin-wide profiles of Mediterranean nitrate N/O isotopes, and show that this distribution can be explained by a combination of nitrogen fixation and anthropogenic nitrogen deposition: dx.doi.org/10.1029/2023...

Origins of the Nitrate 15N Depletion in the Mediterranean Sea

Basin-wide depth profiles of nitrate δ15N and δ18O indicate a supply of low-δ15N N to the Mediterranean Sea Nitrate δ15N can be explained by modest rates of N2 fixation and/or anthropogenic N dep...

dx.doi.org

With each passing day, this administration further degrades U.S. scientific capabilities. If we stop collecting climate data, it will not alter reality. It will make us less prepared to address the damage & pain human-induced, climate change generates. This does not make us great. 🧪🔌💡🌊 ☀️💨🔋

There have definitely been some significant changes to the NOAA Climate website "https://www.noaa.gov/climate" in the last 24 hours... For example, removing links and references on the page to 'Climate Ready Nation' initiatives. Stripes are gone too.

A bit late to the #ShowYourStripes Day... but a trend of my hometown temperature change does not look "cool" at all 😅 showyourstripes.info/c/asia/thail...

Show Your Stripes

Visualising how the climate has changed for every country across the globe

showyourstripes.info

Thank you for your warm welcome, Nina! @ninadavtian.bsky.social. Bluesky definitely makes me miss the old good days in #Twitter! Glad to join #PaleoSky!

Dr. Nina Davtian (she/her/hers)@ninadavtian.bsky.social · last yr.

Among the recent additions to my biomarker Starter Pack, I cannot not mention @paleolipidrr.bsky.social! Welcome to Bluesky Ronnie! To all my followers: check out Ronnie’s 🧵 about his first-authored papers! Paper #1: bsky.app/profile/pale... Paper #2: bsky.app/profile/pale... #GDGTs 🧪 ⚒️ 🌊 #PaleoSky

Archaea xkcd.com/3095/

We’re wasting the remaining carbon budget on war and AI.

Only two years left of world’s carbon budget to meet 1.5C target, scientists warn

Breaching threshold would ramp up catastrophic weather events, further increasing human suffering

theguardian.com