🚨 The Global Carbon Budget 2025 has just been released and I actively contributed for the first time 😍

1/2 We just published the Global Carbon Budget 2025, with a mix of bad news (CO2 emissions continue to grow) and encouraging news (35 countries saw emissions decline over the past decade while growing their economies). Read the highlights in a short article: theconversation.com/the-worlds-c...

Get your fill of Global Carbon Budget 2025 figures and associated data here, released today: robbieandrew.github.io/GCB2025/

The concentration of CO2 in the atmosphere is set to reach 425.7 parts per million in 2025. Emerging climate impacts on the land and ocean carbon sinks contributed 8% to the rise in atmospheric CO2 concentration since 1960. 11/

The land and ocean CO₂ sink are 25% and 7% smaller, respectively, than they would have been without the effects of climate change and variability, on average for the 2015-2024 period. Combined, this is equivalent to the total sink (land and ocean) being nearly 20% smaller than otherwise. /10

The land & ocean CO2 sinks were re-evaluated based on stronger evidence & new understanding • The ocean CO2 sink was re-evaluated upwards, taking up 29% of the total emissions. • The land CO2 sink was re-evaluated downwards, taking up 21% of the total emissions. www.nature.com/articles/s41... 9/

Total anthropogenic CO2 emissions – the sum of fossil & land-use change emissions – have grown more slowly in the past decade1 (0.3% per year on average), compared to the previous decade (1.9% per year). The growth in fossil emissions is offset by the decrease in land-use change emissions. 8/

Good news: 35 countries have decreased their fossil CO2 emissions significantly (p<0.05) while growing their economies in the decade 2015-20244, twice as many as during the previous decade (2005-2014; 18 countries. These 35 countries account for 27% of global fossil CO2 emissions. 5/

The Global Carbon Budget is out and Glen covers it all in this thread:

Happy to see this out! Meltwater can delay future surface warming, and its interannual variations impact ocean stratification & overturning.​​ This effect is usually absent from models. Including it as forcing may lead to more realistic simulation of surface temperature and sea ice trends🧊🌊 (1/7)

Great dissection of where the world stands on climate 10 years after Paris: better than ever; worse than needed. Start here: www.nytimes.com/interactive/... But lemme quibble a bit with the CO₂ₑ emissions pathways painted here. A quick 🧵

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...

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We are - to our knowledge for the first time - not only assessing the potential efficiency of OAE using a global model, but also potential effects on phytoplankton and how phytoplankton can affect OAE efficiency. Exiting results - enjoy reading 😊 @jhauck.bsky.social

Very happy to see this paper from the #OceanNETs project out: --> net primary production can locally be reduced by 15% in regions of ocean alkalinity enhancement due to indirect effects. 1/2

Open Letter by scientists to the Council: "Climate Neutrality Is Europe’s Greatest Economic Opportunity”. Ahead of the European Council meeting on 23.10.2025, 2,178 scientists urge EU Heads of States & Governments to take ambitious decisions for the 2040 targets. zenodo.org/records/1739...

🌊 Open position W2-Professorship (with tenure track) in Physical Oceanography @geomarkiel.bsky.social in Kiel, Germany. Application deadline: 5th of November 2025 Please find more information here: www.geomar.de/en/karriere/...

Frauke Bunsen, Cara Nissen and Judith Hauck assess the impacts of climate change on the global ocean carbon sink doi.org/10.1029/2023... #ocean #carbon

🌟 Postdoc Opportunity in Marine Biogeochemistry at CNRS-CEREGE! 🚢 Are you a passionate researcher ready to tackle climate change? Dive into the ERC-funded Deep-C project in Aix-en-Provence, France! ⬇️

In the Department of Earth and Environmental Sciences @columbiauniversity.bsky.social, we are hiring an Assistant Professor in Atmosphere and/or Ocean Physics. No deadline stated, but review will begin soon, so please do not delay. apply.interfolio.com/173819

So nice to see #Polarstern pCO₂ data from the @awi.de MOSAiC expedition being used to provide better quantifications of Arctic Ocean CO₂ uptake. 🌊 agupubs.onlinelibrary.wiley.com/doi/10.1029/...

🌊 In 2023, the ocean carbon sink weakened for the first time in a record-hot year 🌡️🌎 Our new study in Nature Climate Change quantifies this unexpected decline and explains how it came about. 👇 doi.org/10.1038/s415...

My latest: Polar scientists warn that the White House and NSF are planning to terminate the Nathaniel Palmer, the only US research icebreaker capable of handling Antarctic extremes, this October. So far the plan has seen minimal pushback from Congress.

🌊❄️🧪 🇦🇶 Please share: We have learned that the National Science Foundation is moving ahead with plans to decommission the U.S. Research Vessel/Ice Breaker Nathaniel B. Palmer this October. If you care about Antarctic research, please read on (1/n)

They want to close the NOAA lab (GML) that brings you this, the most iconic time series in the environmental sciences. gml.noaa.gov/ccgg/trends/

🌊 Still not familiar with #SOCOM2? 5 key experiments tackling biases in ocean CO₂ reconstructions by addressing data gaps, changing networks & mapping methods. Possible session at #OSM2026! climate.esa.int/en/supportin... @oc4c.bsky.social @vliz.be @jhauck.bsky.social @oceancarbon.bsky.social

AI has greatly accelerated my transition from Matlab to Python. But 3 experiences *this week* have alerted me to the potential for mistakes and brain rot when getting too reliant. First, I used it to help me write code to compute lagged correlations between two variables. 🌊🧵1/4

📢 New paper alert! 📢 New insight into how sea ice controls the ocean uptake of carbon dioxide around Antarctica, obtained from the unique year-round Rothera Time Series. Delighted to be part of this study, led by the very excellent Elise Droste. 🧪❄️🥼🌊 www.nature.com/articles/s43...

Two Postdoc Opportunities in Environmental Microbiology! Join us and work on microbial key players exposed to oxygen depletion. Please share widely! Deadline: 25 July More information can be found here: tinyurl.com/4kwzzt6p

On this day 40 years ago, the Schengen agreement was signed, paving the way for free movement across Europe without internal checks. Today, 3.5 million Europeans from 29 countries are travelling, working, and moving freely across Europe on a daily basis. 🔗Learn more: europa.eu/!6QwJvb

Happy to share our paper in ‪@science.org‬ 'Observed trend in Earth energy imbalance may provide a constraint for low climate sensitivity models' | Science www.science.org/doi/10.1126/...

Liqing Jiang led a new synthesis project for ocean carbonate chemistry data sets which is now in review. 🧪🌊🦑🌐 Check out the preprint! 👇 doi.org/10.5194/essd...

After working at it for a while, I finally convinced @clequere.bsky.social to join Bluesky. Many of you know her, but if not, she’s an extraordinary scientist whose impact on climate science and society is hard to measure. Please give her a follow. research-portal.uea.ac.uk/en/persons/c...

SOCAT v2025 is released today! A grand total of 49.6 million surface ocean fCO2 observations from dozens of contributors around the world. www.socat.info/v2025 #ocean #co2

Happy Pride Month! 🏳️‍🌈 At AWI, we are committed to diversity and equality. Pride Month in June reminds us how important it is to strengthen an open and respectful society, both in science and in everyday life. We embrace diversity every day. Photo: Laura Oldenburg

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✍️ 475 external experts & 40 EPB members have already signed our open call to secure Europe’s leadership in #polarresearch by targeted investments in #FP10 - and the number is still growing! www.europeanpolarboard.org/news-events/... 🚨 Add your name to the open call: docs.google.com/forms/d/e/1F...

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I just discovered 'The Warming Papers' and don't know why I hadn't found them until now - free PDF in the link content.e-bookshelf.de/media/readin...

‼️ Check out our new discussion paper "Synthesis of data products for ocean carbonate chemistry" led by Liqing Jiang. 🌊 essd.copernicus.org/preprints/es...

1/3 The new Global Methane Budget is now published, open access. essd.copernicus.org/articles/17/...

#NeverAgain I visited Auschwitz as a teenager during a school exchange program with Poland. It was one of the most intense experiences in my life - I will not forget. Everyone should visit, really. Thank you for your work, @auschwitzmemorial.bsky.social

I've been working on ecological responses to environmental change for a long time, so I enjoyed putting down my thoughts (and code!) on how best to go about analysing response curve/reaction norm experiments. I think you'll find it useful if you do these kinds of experiments (and maybe otherwise!)

Well, fuck! Just got a message from my university that we can no longer spend money on our NSF-funded grants. This is as good as having the grants taken away from us.

Das kann nur heißen: Keine Zusammenarbeit in Bund, Ländern und Kommunen, erst recht keine Koalitionen. Wehren wir uns gegen die Feinde unserer Verfassung. Die Bundesregierung und/oder der Bundestag sollten das Verbot betreiben. www.tagesschau.de/inland/innen...

It is the last day of #EGU25, here is a highlight that makes use of REcoM's variable stoichiometry in an Earth System Model configuration. Don't miss it !

Today at #EGU25:

The Warming Stripes have now been extended downwards into the ocean and upwards into the stratosphere! Collaborative paper which tells the story of how the stripes were developed, and discusses their extension across the Earth system, is now available in BAMS: journals.ametsoc.org/view/journal...

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