⏳Coming soon: PAGES Magazine – “The Essence of Time”

Explore the challenges and future of geological dating: from biostratigraphy to radioisotopic methods.

📬 Free hard copy available, order by tomorrow!
pastglobalchanges.org/form/pages-m...

#Geoscience #PAGES #EarthScience

Little coverage of the two big new Nature papers using the Allan Hills blue ice, showing that CO2 may not have been the primary driver of the Mid-Pleistocene Transition.

This is a super interesting debate about a fundamental process of the past climate, if you haven't covered it before.

Southern Hemisphere initiation of the mid-Pleistocene transition A South Pacific neodymium isotope time series suggests Antarctic ice sheet growth triggered the mid-Pleistocene transition.

Interested in mid-Pleistocene transition? Check out our latest paper 👉🏽 www.science.org/doi/10.1126/...

@us-sciod.bsky.social @kapuge9paleo.bsky.social @jfarmersalmanac.bsky.social @julgottschalk.bsky.social
#paleoceanography #EXP383

I know science can’t fix the world — here’s why I do it anyway The world faces energy shortages as fossil fuels are phased out. Research can’t go on as normal.

I know science can’t fix the world — here’s why I do it anyway www.nature.com/articles/d41...

Space dust reveals rapid evolution after dino-killing asteroid New data detail how tiny forms of life rebounded much more quickly than previously believed

Good write-up in Science on our recent paper: www.science.org/content/arti...

Here's an interactive webpage to explore the new stacks: yz3062.github.io/htmls/BIGSTA...

Global and regional Pleistocene benthic δ18O stacks with a comparison of different age modeling strategies Abstract. Constructing accurate age models for Pleistocene marine sediments is crucial for our understanding of glacial-interglacial cycles and other climatic processes. Benthic foraminiferal δ18O sta...

A suite of benthic δ18O stacks intended as updates to the LR04 has been published. We compiled new data, updated the chronology, and provided regional stacks. gchron.copernicus.org/articles/8/8...

📣 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

Controls on Oxygen Concentrations and δ13C in the Glacial Atlantic Oxygen content was lower than modern throughout much of the glacial Atlantic Ocean Changes in preformed δ13C and oxygen were critical components of the observed difference between the last glacia...

Oxygen content was lower than modern throughout much of the glacial Atlantic Ocean, suggests a new study by Costa and Oppo doi.org/10.1029/2025...

Relatively warm deep-water formation persisted in the Last Glacial Maximum - Nature During the Last Glacial Maximum, the deep Northwest Atlantic was only about 2 °C colder than today, suggesting sustained production of relatively warm North Atlantic Deep Water during the Last Glacial...

🌊 Relatively warm deep-water formation persisted in the Last Glacial Maximum

www.nature.com/articles/s41...

Synchronous bipolar retreat of mid-latitude ice masses during Heinrich Stadials - Nature Geoscience Glaciers in New Zealand retreated at about the same time as mid-latitude glaciers in the Northern Hemisphere during Heinrich Stadials, indicating strong global teleconnections during the last glacial ...

⚒️ Article: Glaciers in New Zealand retreated at about the same time as mid-latitude glaciers in the Northern Hemisphere during Heinrich Stadials, indicating strong global teleconnections during the last glacial period

@ifremer.bsky.social

www.nature.com/articles/s41...

Happy to see our #IODP379 pub post today! Great working with #AmundsenSea and #JOIDESResolution and #IODP #GulfCoastRepository on int‘l collaborative project led by K.Horikawa: Repeated major inland retreat of #Thwaites & #PineIsland glaciers (#WestAntarctica) #Pliocene www.pnas.org/doi/10.1073/...

On Thursday, I’m giving an invited talk #AGU25. We know a lot about how ice ages end, much less about how they start. Come for new data on AMOC, an analogy involving butterflies, and a reference to “2001, A Space Odyssey”

Didn’t get to post last night but the train arrived ahead of schedule!! Lots of people on the train had poster tubes. Felt like I was on the Hogwarts Express to AGU

Drama! Someone sitting next to me thought I missed the train after getting off at a long stop and reported it to the staff. In reality, I relocated to the dining car to work on my laptop. After the staff found me, the crisis is averted and everyone is happy again

A quarter of the way through. Sloss National Historic Landmark in Birmingham, AL.

Atlanta is a major train hub. Heavy freight traffic along the way. But the passenger service is a different story. Only one train line services the city (the crescent line from New York to New Orleans). The tiny Amtrak station fits probably 20 people and isn’t connected to a subway

I’m taking the Amtrak from Atlanta to New Orleans for #AGU25! Follow my journey here, which will be 12.5 hours if there’s no delay 🚊

Sea-level rise at the end of the last deglaciation dominated by North American ice sheets - Nature Geoscience The melting of the last remnants of the North American ice sheets in the early Holocene led to 14 m of global sea-level rise, higher than prior estimates, according to proxy constraints from the Missi...

North American ice sheets contributed a lot more to sea level rise during 7 to 9 thousand years ago than previously thought, according to Mukherjee et al. (2025) doi.org/10.1038/s415...

What Scientists Found When a Deep Sea Mining Company Invited Them In

Benthic forams in the news www.nytimes.com/2025/12/05/c...

Impact of Atlantic Meridional Overturning Circulation Collapse on Carbon‐13 Components in the Ocean Simulated collapse of the Atlantic Meridional Overturning Circulation affects atmospheric CO2 ${\text{CO}}_{2}$ and δ13CCO2 ${C}_{\mathit{CO2}}$ Largest effect on ocean δ13CDIC ${C}_{\mathit{DIC}...

New publication: how does a collapse of the Atlantic Meridional Overturning Circulation (AMOC) affect carbon and d13C cycles in the ocean?
doi.org/10.1029/2025...
doi.org/10.1029/2025...

Congratulations @sfeakins.bsky.social on becoming the new Editor in Chief of Paleoceanography and Paleoclimatology, and thank you to Matthew Huber for all the years of service that did so much to strengthen this important journal!

Atmospheric Rivers Shaped Greenland’s Ancient Ice - Eos New simulations reveal how atmospheric rivers influenced Greenland’s ice sheet during the Last Interglacial—offering clues to future melt in a warming world.

Quick writeup about our recent paper on atmospheric rivers during the Last Interglacial in @eos.org!

eos.org/editor-highl...

Job ad for postdoctoral research in ice sheet modeling | Andrea Dutton 🌊 🌊 JOB ALERT!! Looking for a postdoc that does not rely on federal funding?? Looking to live in a city that is routinely ranked as one of the best cities to live in across the entire U.S.? Come jo...

🌊🌊JOB ALERT!! Are you an ice sheet modeler looking for a postdoc that does not rely on federal funding? Come join our research team at University of Wisconsin-Madison to study the physical and human dynamics of sea-level rise. www.linkedin.com/posts/andrea...

Persistent eastern equatorial Pacific Ocean upwelling since the warm Pliocene Upwelling generates a nutrient-rich “cold tongue” in the eastern equatorial Pacific Ocean (EEP), with impacts on global climate, oceanic biological productivity, and the carbon cycle. The cold tongue ...

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/...

Time series of standardized streamflow anomaly for the Ganga River from year 700 to 2020 (derived from a hydrological model and from the Monsoon Asia Drought Atlas built from tree rings). The plot shows mostly balanced wet (blue/green bars) and dry (brown bars) years until the 20th century, when the black moving-average line dips sharply after 1990. The 1991–2020 mean (blue horizontal line) is well below the range of previous 1,300 years. Orange dots mark major documented historical droughts, but the recent drying is clearly the most severe.

Observed changes in precipitation and temperature between 1951 and 2020. Spatial distribution of change in (A) annual precipitation (%) and (B) annual mean temperature (°C) between 1951 and 2020 based on the Sen’s slope calculation. Grids with statistically significant trends (P <= 0.05), based on the Mann–Kendall test, are highlighted with stippling. The Inset panels in (A) and (B) represent the interannual variability in precipitation anomaly (%) and temperature (°C) averaged for the Ganga River Basin (blue boundary). The total change in average precipitation and temperature over the GRB during 1951−2020, estimated using the Sen’s slope, is statistically significant (P-value <= 0.05) based on the Mann–Kendall test.

🚨New work🚨 led by Ph.D. student Dipesh Chuphal (IIT Gandhinagar), shows that the recent drying of the Ganga River basin is unprecedented in 1,300 years—more severe than historical famines. This ~multidecadal drying appears forced, but many models do not capture it. ☔️ 🌧️

www.pnas.org/doi/10.1073/...

Link?

Humpback?

Unbelievable experience with the journal Palaeo3. Our manuscript was rejected because… they couldn’t find a second reviewer, and it had been in their system “too long” (7 weeks), according to the editor. In other words, just to preserve their review-speed metrics, they rejected our submission.

Many thanks to coauthors, including @cpallone.bsky.social!! Work done @lamont.columbia.edu