Most of the scientists at the nonprofit that I cofounded, including my two cofounders, came from NCAR. It’s hard to overstate the importance of this place for climate science.

It is hard to overstate how critical @ncar-ucar.bsky.social is to climate science in the US and around the world. It's the beating heart of our field. Generations of scientists have trained there, and almost everyone I know relies on deep collaborations with NCAR scientists. It's end is unthinkable.

98% of Gaza’s Tree Cropland Destroyed by Israel - Eos Maps based on remote sensing analysis could inform remediation efforts by identifying whether agricultural lands were damaged by bombs, debris, or forced displacement of its caretakers.

After 2 years of war, 98% of tree cropland and 75% of greenhouses in Gaza have been destroyed. Remote sensing maps tracking the progression of damage can help identify the best ways to remediate the land & rebuild Gaza’s agricultural sector. #AGU25

My latest for @eos.org:

eos.org/articles/98-...

Jet stream response to future Arctic sea ice loss not underestimated by climate models npj Climate and Atmospheric Science - Jet stream response to future Arctic sea ice loss not underestimated by climate models

Proud to share our new paper in npj Clim. Atmos. Sci. (@SpringerNature)!

Our findings:
1️⃣ reduce uncertainty in mid-latitude climate projections
2️⃣ increase confidence that #ClimateModels correctly predict a future poleward shift of the #JetStream

Read the paper here 👉 rdcu.be/eS73b

#ClimateScience

i forgot @amoeba-lab.bsky.social was on here too!

🌊

Thermal and Non‐Thermal Controls on Benthic Foraminiferal Mg/Ca, Sr/Ca, B/Ca, and Mg/Li: Global Core‐Top Compilation, Revised Calibrations, and Application to the Geologic Record We compile ∼1,500 core-top benthic foraminiferal Mg-Sr-B-Li/Ca measurements from five species and one genus to produce new calibrations Many benthic foraminiferal elemental systems require multiv...

Absolutely delighted to announce the publication of our benthic foraminifera trace element compilation + revised multivariate calibrations: Nauter-Alves et al. (2025):
agupubs.onlinelibrary.wiley.com/doi/10.1029/...

With @willerstorfi.bsky.social @mudwaterclimate.bsky.social and others

w/ @mudwaterclimate.bsky.social and many others!

this suggests many benthic foraminiferal elements require multivariate calibrations to account for temperature and seawater carbonate chemistry - we present data processing software 'ElCaRBenthic' that can simultaneously solve for temperature and Ωcalcite with fully propagated uncertainties

Thermal and Non‐Thermal Controls on Benthic Foraminiferal Mg/Ca, Sr/Ca, B/Ca, and Mg/Li: Global Core‐Top Compilation, Revised Calibrations, and Application to the Geologic Record We compile ∼1,500 core-top benthic foraminiferal Mg-Sr-B-Li/Ca measurements from five species and one genus to produce new calibrations Many benthic foraminiferal elemental systems require multiv...

new paper led by Andressa Nauter-Alves assessing controls on trace elements (Mg, Sr, B, Li /Ca) in multiple species of benthic foraminifera using a large compilation of coretop samples (>1500 sites).

dx.doi.org/10.1029/2025...

Southern Annular Mode dynamics, projections and impacts in a changing climate - Nature Reviews Earth & Environment The Southern Annular Mode (SAM) has shifted towards its positive phase owing to ozone depletion and increasing greenhouse gas concentrations. This Review discusses the dynamics, trends and projections...

New research published today in @nature.com shows the Southern Annular Mode (SAM) – the Southern Hemisphere’s most influential climate driver – has reached its most positive state in more than a millennium.

Read the Nature paper: www.nature.com/articles/s43...

🌊

Frontiers | Extraordinary Claims Require Extraordinary Evidence: Evaluating Nodule-Associated Dark Oxygen Production Dark oxygen production (DOP) broadly encompasses all light-independent pathways that produce oxygen (Ruff et al., 2024), including microbial and abiotic proc...

A rather pointed Opinion piece in Frontiers & a totally bizarre situation. Nature Geoscience published a 2024 claim of dark O2 production on the Pacific seafloor. There were several obvious problems with the work & multiple lines of argument that it wasn't correct
www.frontiersin.org/journals/mar...

I love how being a librarian means I'm learning new things *all* the time. I've got a PhD in oceanography, but this morning I was answering a reference question & learned about ocean spiciness & how seawater can be "spicy" or "minty." 😍 TY to the person who asked about velocities of deep currents. 🌊

Southward shift of the Antarctic Circumpolar Current upstream of Drake Passage maintains a stable circumpolar transport - Nature Climate Change Climate change is altering the strength and position of Southern Ocean westerly winds but the ocean transport is stable. Here the authors use sea surface height to show that a poleward shift of the no...

🌊 Southward shift of the Antarctic Circumpolar Current upstream of Drake Passage maintains a stable circumpolar transport

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

The Physiological Response of Contrasting Coccolithophore Species to Ocean Alkalinity Enhancement Increased alkalinity significantly boosts growth rates of coccolithophores Gephyrocapsa huxleyi and Coccolithus braarudii Divergent responses between species arise as large C. braarudii rely on C...

@agu.org New in #JGR a study on 🌊 Ocean Alkalinity Enhancement: higher alkalinity speeds up growth of key #coccolithophores, but at very high TA calcification falters & shells deform. Authors suggest TA <~3,000 μmol kg−1 as a safer ecosystem boundary. doi.org/10.1029/2025... #protistsonsky

📢Global Carbon Budget 2025📢

Fossil CO2 emissions continue to rise in 2025 while the terrestrial carbon sink recovers to pre-El Niño strength.

The key findings are covered in two reports this year:
* ESSDD (preprint): essd.copernicus.org/preprints/es...
* Nature: www.nature.com/articles/s41...

1/

Components of the global carbon budget and their uncertainties as a function of time

bit.ly/GCB2025-b

Friedlingstein, P. et al. (2025). Global Carbon Budget 2025. Earth System Science Data Discussion, (Under Review). DOI:10.5194/essd-2025-659

Cosmic dust reveals dynamic shifts in central Arctic sea-ice coverage over the past 30,000 years Arctic sea-ice loss affects biological productivity, sustenance in coastal communities, and geopolitics. Forecasting these impacts requires mechanistic understanding of how Arctic sea ice responds to ...

Huge paper for the Arctic Ocean published today in @science.org - a new 30,000 year history of Arctic Ocean sea-ice cover reconstructed from the accumulation of cosmic dust-derived helium-3! www.science.org/doi/10.1126/... (1/n)

Extinguishing the saturation horizon - Nature Chemistry The buffering capacity of the world’s oceans has helped offset the effects of CO2 emissions on climate; however, it is not without cost. Bruce Gibb discusses the causes, the chemistry and the conseque...

🌊 New commentary explains how the ocean’s CO2 buffering is weakening as the carbonate saturation horizon shoals.

…a super clear explanation of a complex problem.

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

Anyway, we need some joy, so here's the Egyptian foreign minister being given a Lego Pyramid by the Danish foreign minister.

Postdoctoral Research Associate at University of Liverpool Looking for a new job opportunity in academia? Check out this job opening for a Postdoctoral Research Associate on jobs.ac.uk!

Seeking a three year postdoc in the field of ocean biogeochemistry and productivity using mechanistic models and synthesis of observations. Note the short fuse for applications. Please help distribute. All nationalities welcome to apply! 🌊

www.jobs.ac.uk/job/DPG117/p...

Fresher waters in the Southern Ocean trapped CO2 at depth for decades - Nature Climate Change A human-driven increase in upwelling of carbon-rich deep waters threatens the efficiency of the Southern Ocean carbon sink, which substantially mitigates global warming. Long-term observations reveal ...

Fresher waters in the Southern Ocean trapped CO2 at depth for decades

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

If you can't be with the forams you love, love the forams you're with #Ammonia

Thanks Ken!

Thanks Rehemat!

Thanks Anson!

So many more!!! (this was such a fun project!)

and @tdegaridel.bsky.social !