Happy World Ocean Day! The ocean is the heart of our life support system, without which we’d all be dead. It’s taken up >90% of the heat from global warming and 30% of our CO₂ emissions. In return, we give it 11 million tonnes of plastic annually, which animals ingest and also become entangled in.

Stratospheric cooling explained www.nature.com/articles/s41...

Fantastic review on the ocean carbon cycle and climate led by Laure Resplandy that pulls together impressive budgets and tackles some key narratives 🌊 www.science.org/doi/pdf/10.1...

1/1 The GCP-Global Carbon Budget 2025 has just been published in its final form. It is the same data we released at the last COP in Nov 2025, but given the many improvements this budget introduced compared to previous editions, it underwent a longer and more detailed peer review process.

Turns out the quickest way to change consumer behavior when it comes to fossil fuels and meat consumption is the same.

This week I was in Montreal for the annual AGU Publications retreat. We talked thru how we, the science community, would like AGU Journals to excel, for us, in the future! Our society journals are our journals. I never valued that more than I do now.

Starting a small series here: highlighting one JGR-Oceans paper I edited each month. Many excellent studies, but this one stood out — discovery of a dipole-like chlorophyll contrast around Sri Lanka dome (H1). @jgroceans.bsky.social @agu.org doi.org/10.1029/2025...

New paper led by @solilyquy.bsky.social on insights about biological community structure of North Atlantic eddies through the lens of the SWOT and PACE satellites! @nasaclimate.bsky.social tos.org/oceanography...

Oceanic C:N:P ratios do not follow the classic Redfield ratio stoichiometry—recognized for some time—but they follow large-scale patterns. Indian Ocean has higher C:N:P than Redfield, yet consistently lower than those in the Atlantic Ocean and Pacific: agupubs.onlinelibrary.wiley.com/doi/epdf/10....

an outcome of a mammoth mCDR discussion

I’ve led over 20 expeditions to the open ocean, chasing how currents are changing as our climate warms, only to find the answer lies at the smallest, most chaotic scales. Eddies are reshaping even the mightiest currents and bringing more extremes to coastal seas. www.nature.com/articles/s41...

🌊🧪 At JGR-Oceans we put quality and integrity first, respecting author reputation, reviewer effort, and reader reward.

Led by PRL student Deepak Rai, we recently had a new paper out showing that the Oxygen Minimum Zone in the Arabian Sea *expanded* in size during the last glacial cycle @arvindocean.bsky.social agupubs.onlinelibrary.wiley.com/doi/full/10....

One of the dumbest claims from climate deniers is that ocean warming is from deep-sea volcanoes. ³He in the deep ocean comes from volcanoes, and if heat and carbon did too, the ocean temp and carbon distribution would be similar to ³He (they’re not). agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Ocean waters are aging? What? Yes: oceanographers call 'age' the time since deep ocean water was last in touch with the atmosphere. It is a measure of 'ventilation', deep vertical overturning of the ocean. Data show this process is slowing: #AMOC slowdown. Bad news. 🌊 www.geomar.de/en/news/arti...

JGR–Oceans is seeking Editors and Associate Editors across all areas of ocean science—with particular interest in expertise related to Lagrangian dynamics, ocean color remote sensing, air–sea coupling, sea level, circulation theory, and ocean change. Join us in shaping the future of ocean research!

Western Indian subantarctic phytoplankton blooms fertilized by iron-enriched Agulhas water 🌊 rdcu.be/eMTV2?utm_ca...

Still looking for 1 more guest editor :-) 🌊

We are currently proposing a special issue in Biogeosciences to publish individual experiments of the "Ocean Alkalinity Enhancement Pelagic Impact Intercomparison Project #OAEPIIP". Let me know if you are keen to serve as guest editors for the special issue ☺️ 🌊 bg.copernicus.org/articles/21/...

AGU's volunteer #PeerReviewers help advance the Earth and space sciences and maintain the integrity and accountability of the scientific record. 🌎 If you are interested in joining the AGU pool of reviewers, please fill out our interest form: buff.ly/ZezWxq4 #PRW2025 #AGUPubs #PeerReviewWeek

Need to calibrate your δ18Osw-based proxies, but can't find the right data? We've got you, FAIR! Check out our new @pages-ipo.bsky.social seawater δ18O database preprint at ESSD! (With Alyssa Atwood, @thomasfelis.bsky.social, @kimcobb.bsky.social, and more!) 🌊🧪 essd.copernicus.org/preprints/es...

Wrapped up an inspiring week at #ICP15 🌊 It was a privilege to share my research and exchange ideas with such an incredible community of paleoceanographers. And also, thrilled to receive honourable mention for the poster. Grateful to @arvindocean.bsky.social for the guidance 🌊 🌏

#ICP15 presents first panel discussion on #Biogeochemistry and #Climate 🙏🏼 @chalkyoceans.bsky.social @jfarmersalmanac.bsky.social @eleniwater.bsky.social @seavdavis.bsky.social @alexauderset.bsky.social Arvind Singh and conveyors Adina Paytan and Harshit Singh Along with stage volunteers 🙏🏼

Happening now at #ICP15: Arvind Singh from Physical Research Labs, Ahmedabad, talks about #iodine (I/Ca) measurements in planktic #foraminifera from Arabian Sea #sediments recording glacial-era expansion of the oxygen minimum zone.

A @natgeosci.nature.com Research Briefing about our publication: www.nature.com/articles/s41... 🌊

Nature India highlights the research activities conducted onboard SA Agulhas during the 12th Indian Scientific Expedition to the Southern Ocean. www.nature.com/articles/d44...

Are you looking to gain experience with peer review of scientific manuscripts? After two very successful editions, #EGU is once again offering our Members FREE #PeerReview Training! 📆 Application deadline: 31 July 2025. Apply Now and make full use of many participation benefits! 🔗: egu.eu/6DU4E4

Today is World Ocean Day! 🌊 On this special day we want to present the #FUTURO research campaign off West Africa. Find out more in the video: youtu.be/DXVY7EgwMnA?... #WorldOceanDay

Happy #WorldOceanDay! 🌊 In AGU's JGR: Oceans, you can read the latest research about the ocean, it's complex processes, and interactions with other components of the Earth system. 🔗 buff.ly/f8ms6T3 #AGUPubs #Oceans #Coral #STEM #Oceanography #OceanScience @jgroceans.bsky.social‬

New paper alert 🚨🚨 Here we posit a non-linear relationship between Indian Summer #Monsoon (ISM) intensity & marine productivity in the Bay of #Bengal: extremely weak & strong #ISM states of the last 22,000 yrs were *both* associated with sharp disruptions to primary production! (1/6) rdcu.be/ejJD2

⚒️ Article: Changes in terrestrial runoff into the Bay of Bengal during both extremely weak and strong Indian summer monsoon phases since the Last Glacial Maximum caused a collapse in marine primary production linked to increased stratification www.nature.com/articles/s41...

In August 2023, Japan began discharging 1.4 million tons of treated water from Fukushima. Yu et al., synthesize tritium measurements in the North Pacific since the 1950s showing that tritium release from Fukushima remains within safe limits 🌊 agupubs.onlinelibrary.wiley.com/doi/full/10....

I'm on an mCDR panel at #EGU25, but I just learned that our convener Carolin Löscher from Denmark won't be there. She's been diagnosed with a rare and aggressive form of cancer whose expensive treatment is only available in the US and UAE. Please consider helping: www.gofundme.com/f/help-for-m...

🎉New publication alert! 🌊 We tested how different ocean alkalinity enhancement (OAE) substances—NaOH, olivine, and steel slag—affect plankton in the Equatorial Pacific🌞. 🫙Repeatitive onboard incubations, open ocean data. Check it out 👉: rdcu.be/egM0x #OAE #ClimateChange #CDR

The AGU will always stand by and represent the scientific community 🧬⚛️🌊🔭🔬 Addressing global Earth Science challenges requires an equitable, diverse, and inclusive scholarly community where researchers must be freely able to discuss their research. agupubs.onlinelibrary.wiley.com/doi/full/10....

Some defiance for science! 🌊🌏🧪 @agu.org We affirm our commitment to publishing evidence-based Earth and space sciences that is free from political interference We will continue to foster a diverse, equitable, and inclusive scientific community because it improves the quality of science

🔬Science must remain free from political interference. As Editors-in-Chief of AGU Publications, we reaffirm our commitment to rigorous, independent, and inclusive Earth and space science research. A diverse scientific community strengthens discovery and solutions for society.

#WeekendReading: Hoogakker (and 67 other people) go into the current state of low-oxygen proxies currently in use in paleoceanography. It's a small book (95 pages), more than a paper, and covers a lot. 🧪⚒️ bg.copernicus.org/articles/22/...

very happy to see our review as a #TopCitedArticle in @aslo.org L&O Letters aslopubs.onlinelibrary.wiley.com/doi/full/10.... @subhadeepchowdhury.bsky.social

Writing your first science paper? Wondering where to start? Write an abstract first to troubleshoot and refine the research question, your main results, and conclusions. @jgroceans.bsky.social @agu.org

The Mauna Loa CO₂ record is the most iconic time series in the environmental sciences. Trump and his enablers are trying to kill it.

🚨 #NOAA is essential for weather forecasting, climate research, and public safety. AGU stands with the scientific community in urging Congress to protect and strengthen NOAA, not dismantle it. Our economy, environment, and safety depend on it.

🌊 Not sure how to resist Trump as our institutions are bullied and silenced by threats of federal defunding? Join AGU. Together we are strong and can speak truth to power on science and equity issues.

Opting out will make climate change more of a threat to US citizens! “The world’s largest community of climate scientists urges the Trump administration to immediately renew U.S. federal commitment to climate science, including the restoration of data, personnel, grants and collaborations.”

Trump 2.0: an assault on science anywhere is an assault on science everywhere www.nature.com/articles/d41...

Very excited to learn that the 2026 Ocean Sciences meeting in Glasgow will have an official tartan!

🌊 Dear NSF and NOAA colleagues, Your work matters. Many of you have sacrificed personal gain and scientific freedoms to serve the public good. Thank you! Your mission protects lives and protects nature, including the most vulnerable people and places suffering the fall out of anthropogenic change.

"In these times, it is crucial to reaffirm our commitment to the values that unite us: the unbiased pursuit of scientific inquiry, respectful collaboration across diverse backgrounds, and the unwavering affirmation of basic human decency and integrity."

AGU stands with federal scientists. Read more on fromtheprow.agu.org/standing-tog...

Global declines in ocean primary production underestimated by climate models communities.springernature.com/posts/global... 🌊