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! 🌊🧪
The image depicts a phase diagram illustrating the relationship between total alkalinity and dissolved inorganic carbon in aquatic systems. Key processes such as photosynthesis, respiration, and CaCO₃ formation and dissolution are labeled, with arrows indicating the directions of alkalinity addition.
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. 🌊
A picture of the earth showing the pacific ocean. You can see hawaii and New Zealand. Also the edge of antarctica, australia, and north and south america...but barely.
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 🌊
A cartoon depicting a person (labeled “us”) poking an illustrated green dragon labeled "ANGRY BEAST" with a stick. The quote from Wally Broecker, "Climate is an angry beast and we are poking at it with sticks," is included at the top.
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...
