Must read paper on pCO₂ measurements, especially for MRV of mCDR. Some key points: Equilibrator-based instruments require more expertise but give much better results. For membrane/in situ instruments, you could get significantly different results from instruments from the same manufacturer. 🙀🌊

Come work with us 🌊

🌊There is an available position as a postdoc at NORCE in ocean biochemical modelling fixed for a period of 2 years in Bergen. The position will be affiliated with the Bjerknes Centre and is a part of OceanICU project. 🧪Read more and apply here: www.jobbnorge.no/en/available...

🚨New GMD publication alert!🚨 🌊 Understanding the changing #Antarctic #SeaIce using MetROMS-UHel-v1.0, by Cecilia Äijälä and colleagues gmd.copernicus.org/articles/18/...

Changes to NOAA databases and products below 🌊

Postdoc position available studying the biological carbon pump within Jan Taucher's team at GEOMAR 🌊 www.geomar.de/en/karriere/...

Exciting job opportunity to work with ICOS-Norway in Bergen 🌊 www.jobbnorge.no/en/available...

I am happy and grateful that I could contribute and work on this extensive review of the carbon cycle across the Arctic land-ocean aquatic continuum. 🏞️ 🌊 Have a look! The Arctic is such an amazing and interesting fast changing region in the world! www.nature.com/articles/s43...

More shameless self promotion: Visit 0240 in the #agu24 poster hall this foggy Tuesday afternoon!

@eth-eaps.bsky.social is looking for an assistant professor to work on CO₂ removal (CDR). They say greenhouse gas but I don’t think we’re removing atmospheric CH₄ or N₂O. Lots of great people at ETH. Do apply by the end of this month! 🌊🧪

For those who are not marine chemists, this is the easiest way to see how adding alkalinity to the ocean lowers pCO₂ without changing dissolved inorganic carbon and potentially allows the ocean to take up more atmospheric CO₂. 🌊

It’s interesting that the emojis show the earth from three angles 🌎 🌍 🌏 but not the fourth. Though 🔵 is a fair approximation of what it would look like. People underestimate the Pacific.

How does ocean acidification affect coccolithophores? 🌊: (i) High CO2 (low pH) reduces growth rates by up to 87% (Ghux). (i) Coccolith formation is disrupted with malformed structures at extreme pH (C. braarudii). (ii) Carbon export capacity declines as PIC:POC ratios drop. doi.org/10.1002/lno....

Could the AMOC collapse and Bergen become 20 degrees colder (imagine the snow we would get!)? This and more in the latest Bjerknes podcast.

🌊 News from Lydi Keppler et al.: Mesoscale Eddies in the Southern Ocean tend to stimulate the CO₂ uptake in this key region for the carbon exchange between ocean and atmosphere. 👇 doi.org/10.1029/2024...

After the migration to Bluesky, I thought it is time to re-share the findings of my most recent 🌊 paper: Decadal trends in the ocean CO2 sink are mostly driven by changes in the atmospheric CO2 growth rates on decadal timescales! bg.copernicus.org/articles/21/...

Position open at ICOS ocean thematic centre in Bergen 🌊

Today, Wally Broecker would have been 93. He was obsessed with abrupt climate change that arrives suddenly and dramatically. He likened the cli­mate system to an "angry beast", and said we shouldn't poke it (i.e., keep emitting CO₂) because we don't know how and when it'll react. We should listen.

Lecturer or Senior Lecturer in Marine Spatial Science at the Institute for Marine and Antarctic Studies (University of Tasmania, Australia). Closes 30 Nov (details in link below) 🐟🦑🧪 @utas.bsky.social careers.utas.edu.au/ci/en/job/50...

To everyone interested in marine CO2 removal (#mCDR). There is an important meeting coming up in Liege (Belgium) next year, 26-30 May (2025). 🌊 www.ocean-colloquium.uliege.be/cms/c_142299...

New paper in open review. A continuation of work on extending and improving estimates for carbonation (uptake of carbon) by cement products worldwide.

Two postdoc positions in my group are opening: First is part of SOCCOM3 (3 years, NSF funded, S. Ocean carbon/oxygen/nutrient budgets), Second is part of InMOS (4.25 yrs, Schmidt Sciences / OBVI funded, long-term oxygen/carbon flux and inventory constraints). More info: bushinskyoceanlab.org/people/

It's official: I received a science prize from the Royal Society of Arts and Sciences in Gothenburg 🥳 ...for my "mild" obsession with #CMIP More information, in Swedish only -> www.gu.se/nyheter/celi...

Interesting paper that suggests diatoms are not as well exported from the upper ocean as we might have thought … 🌊 ‘Inefficient transfer of diatoms through the subpolar Southern Ocean twilight zone’ www.nature.com/articles/s41...

Ocean Acidification is reshaping life and biogeochemical cycles. In our latest study, Niki Gruber and I reconstructed its progression in the global ocean interior over the industrial era, based on our previous estimates of anthropogenic carbon accumulation. doi.org/10.1126/scia... A 🧵about the 🌊...

Even if CO₂ emissions decreased as much as it did during COVID every year until 2030, we would still miss the 1.5°C target (emissions of 20 GtCO₂/yr by 2023) by a lot.

Want to make a difference? Come work here! Miami needs ocean and climate scientists.

I've been fighting ocean tech bros calling the stripping of CO₂ from seawater "Direct Ocean Capture (DOC)", just because it sounds like Direct Air Capture. Call it Direct Ocean Removal (DOR) because DOC is dissolved organic carbon to oceanographers. Here's an article about mCDR and the real DOC. 🌊

Nearly all developed countries report all their forests as 'managed', which means they report all carbon uptake in forests even if it was caused by climate change (CO2 fertilisation). Is this a problem? More on this later today (article coming) Meanwhile: www.ipcc-nggip.iges.or.jp/public/mtdoc...

How long does CO₂ have to be stored in #CarbonDioxideRemoval #CDR? At least 35 years? 100 years? Longer?🤔 In a new study, @hausfath.bsky.social, @retoknutti.bsky.social & I find that for #netzero CO₂, anything less than 1000 years is not enough to neutralize warming.🧵 www.nature.com/articles/s43...

Apply for an exciting PhD with us at the University of Southampton and the National Oceanography Centre, also in collaboration with BAS 🌊🌍🧊 “Going going gone: physical and biogeochemical responses to Antarctic sea ice loss” www.findaphd.com/phds/project... Application deadline: 8 January 2025

Thank you for joining our #COP29 webinar earlier today. If you missed the webinar, you can watch it in full here ⬇️ https://buff.ly/48PB06w

How much carbon are humans currently producing, how has this changed over the last year, where are our emissions going, and what do we expect in the future? You do not want to miss this thread by the leader of the global carbon budget project ⬇️

During #RECCAP2, we have found a few reasons that show why ocean models in hindcast mode underestimate the ocean carbon sink, some are due to the setup and some due to physics and biogeochemistry (agupubs.onlinelibrary.wiley.com/doi/epdf/10....).

Today's release of the 2024 edition of the Global Carbon Budget, as an interactive slide presentation. Here: robbieandrew.github.io/GCB2024/slid...

Routine observations are not exciting. Yet, measurements of surface ocean partial pressure of CO₂ (pCO₂; think of this as concentration) are important for determining annual ocean CO₂ uptake. It's alarming that the number of observations has been decreasing. 🌊 essd.copernicus.org/preprints/es...

If you have any reach on Bluesky, please consider reposting so I can find friends old and new: I'm Alexander Verbeek and publish about the climate crisis, environment, the beauty of nature, science, walking, sustainability, wildlife, photography, water, and energy.

The global carbon budget 2024 is out

reposted with 🌊 Postdoc position available in computational ocean biogeochemistry in my group at U. Virginia. Focus is primarily on the response of coastal and marine ecosystems to natural variability, climate change, and direct human perturbations jobs.virginia.edu/us/en/job/R0...

Great thread about the #GlobalCarbonBudget

More CO2 in the atmosphere means more CO2 in the ocean. Emissions have not stopped rising, according to the Global Carbon Budget 2024, released today.🌊 bjerknes.uib.no/en/node/3941

#PaperAlert The Impact of Recent Climate Change on the Global Ocean Carbon Sink Proud to see this piece of work from Frauke Bunsen's master thesis out in GRL. agupubs.onlinelibrary.wiley.com/doi/10.1029/...

The ocean takes up anthropogenic CO₂ emissions, 26% on average over the past decade. The #GlobalCarbonBudget 2024 confirms that the ocean sink increased in 2023 after 3 years of stagnation due to rare triple La Niña event. 2023 was an El Niño year, with an expected increase in the sink. 🔽 🌊 1/10

Looking for an #mCDR postdoc? Consider working with us at PNNL: careers.pnnl.gov/jobs/9956?la...

If you learn anything today, it should be this: We're burning more fossil fuels and releasing more fossil fuel CO₂ than ever. Despite what people had hoped, anthropogenic CO₂ emissions have not peaked. To stay below +1.5°C of global warming, we're supposed to cut emissions by 50% by 2030. 🥲

It's finally here! "Today, the White House Office of Science and Technology Policy (OSTP) is releasing a national strategy to advance research on the benefits, risks, and tradeoffs of marine carbon dioxide removal [mCDR], an innovative technology that could help address the climate crisis." 🌊

So, is anyone interested in and wants to follow people doing marine biogeochemistry? I might have a starter pack for you! (also, I blame @malinodalen.bsky.social for this) bsky.app/starter-pack... Spot anyone not there (maybe you?), say something.

Interesting map of which startup is proposing which technique for marine carbon dioxide removal (mCDR), and where they are in their development. At @cworthy.bsky.social, we're producing open-source tools that any of them can use, starting with the abiotic techniques. counteract.vc/perspectives...

Interested in coming to Berlin to work on climate-change related issues? Consider this fellowship from the @humboldt-foundation.de International Climate Protection Fellowship www.humboldt-foundation.de/en/apply/spo...

Russia opened its tenth base + China its fifth, India is building a third + Turkey is planning its first. Iran ...has said it wants an Antarctic base to claim its “property rights How to avoid anarchy in #Antarctica https://www.economist.com/leaders/2024/10/31/how-to-avoid-anarchy-in-antarctica