🌊 This summer, I’m co-organizing a OAE model skill assessment workshop.
We’ll spend 5 days in an amazing location in southern Germany, together with ~30 hand-picked experts.
A few seats are open for applications. Just share a brief note on why you’d like to join:
www.carbontosea.org/2026/04/13/o...
In case you missed this report, published by the Integrated Ocean Carbon Research (IOC-R) program, which is co-sponsored by the Global Carbon Project.
unesdoc.unesco.org/ark:/48223/p...
🌊 New interface for ocean carbonate chemistry data
bit.ly/4tJ27ta
Jiang et al. (2026) compiled 68 cruise, time-series, observational, and model-based products, highlighting differences in coverage, resolution, and methods.
Find the right dataset for your ocean carbon research:
🔗 bit.ly/3PWvud7
Last chance to apply for this 🌊 job
Meereswellen Treffen Felsen / ©Foto von Pixabay von Pexels
Job für 🌊-freund:innen: Einsatz für den #Ozean zwischen Netzwerk, Kommunikation & #Meeresforschung. Die DAM sucht zum 1.5.2026 eine:n Wissenschaftliche:r Referent:in als ODK-Geschäftsstelle/Kontaktstelle Ozeandekade (m/w/d, Vollzeit – remote/hybrid)🔗 www.allianz-meeresforschung.de/news/ausschr...
This position is part of the @erc.europa.eu project #oceanpeak. We work with the ocean and biogeochemistry models #FESOM and #REcoM.
Please share with interested colleagues (@usocb.bsky.social ?).
Apply by 22 April.
A group of people standing in the sun next to water. They laugh and have paddles in their hands.
Any ocean (biogeochemical) modeller wants to be part of this fun crowd for a while?
We're hiring a 🧪 PostDoc at @awi.de to assess carbon pathways into the interior 🌊 ocean and timescales of carbon sequestration with Lagrangian tools.
jobs.awi.de/Vacancies/21...
#hiring #scijobs #oceanpeak
Zur Veröffentlichung des IOC-R Berichtes der
@unesco.bsky.social: die wichtigsten 🧪Forschungsfragen im 🌊marinen Kohlenstoffkreislauf.
www.awi.de/ueber-uns/se...
@awi.de i.de
🌊
🌊
If you're interested in ocean carbonate chemistry, check out this new paper 🌊 A comprehensive overview of 68 existing ocean carbonate chemistry data products and datasets including cruise data compilations, gap-filled products, model simulations, ..
Please share!
essd.copernicus.org/articles/18/...
Big screen with a slide and a scientist presenting at a conference
@carolrobinson8.bsky.social releasing the IOC-R report on key knowledge gaps and research strategies for 🌊ocean carbon at #OSM26.
www.ioc.unesco.org/en/articles/...
A smiling woman with short hair is in focus, set against a blurred background featuring a cylindrical building. The image is in black and white.
@jhauck.bsky.social is a biogeochemical modeler at @awi.de and a Professor at University of Bremen. Her research focuses on understanding the drivers that influence the ocean's ability to take up atmospheric CO₂, including during marine CO₂ removal (mCDR) deployments.
#RECCAP2 paper alert, Jemma Wadham led the polar chapter, summarizing knowns and (large) unknowns of carbon stocks and fluxes from ice sheets to land fringes, fjords, 🌊 oceans and sediments.🧪 Excellent reference starting point for future work.
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
@awi.de
Portrait Hajo Eicken
Prof. Dr Hajo Eicken is the new director of the Alfred Wegener Institute! Born in Bremerhaven, the glaciologist will relocate from Alaska to take up his position as scientific director on 20 March. 🎉⚓
www.awi.de/en/about-us/...
@helmholtz.de
📸: University of Alaska Fairbanks
*DEADLINE EXTENDED* February 8
Submit your suggestions and nominate (yourself or others) as a co-author for the 2026 edition of the 10 New Insights in Climate Science
@fcstpauli.com stabil.
🌊 an opportunity to suggest endangered data, I would think
🌊 Paper led by the Norwegian team in #OceanNETs showing largely additive effects of marine and terrestrial #CDR approaches
shorturl.at/F0dqf
@miriamseif.bsky.social
A comparison between alkalinity in the ocean and in soils, led by Jelle Bijma, motivated by enhanced weathering as a carbon dioxide removal method.
🌊
bg.copernicus.org/articles/23/...
We can essentially predict 🌊ocean CO2 uptake and atm CO2 reduction based on amount of alkalinity added (R2 > 0.98). Of course, some processes are missing in all models, and this will be very different for the first 1-2 decades of the simulation as we illustrate with the large ensemble spread.
6/end
Do you think there is a lot of spread between 🌊 models when simulating alkalinity enhancement?
After decade long simulations, there is astonishingly little spread between models, irrespective of their choice of scenario and regional deployment mask.
5/x
- The scenario sensitivity has previously been underestimated in ocean-only or concentration-driven simulations. The reduction in atmospheric CO2 due to OAE is weaker from the 2060s onwards in SSP1-2.6, that is after peak atmospheric CO2 (compared to a high-emission scenario).
4/x
ocean alkalinity enhancement efficiencies. purple: low-emission scenario, blue: high-emission scenario
- The feedbacks in the ESM make that efficiencies are smaller than in ocean-only or concentration-driven simulations and lead to high uncertainties in the first one or two decades. That will be a real challenge for monitoring.
3/x
- OAE in subduction regions is not significantly less efficient than evenly spread OAE over the globe. How much carbon exactly is transferred to the deep ocean varies strongly between ensemble members that experience somewhat different climate states
2/x
🌊 New ocean alkalinity enhancement paper out, led by @tanvi05.bsky.social:
We conducted global and regional (subduction regions) alkalinity enhancement simulations in the emission-driven AWI-ESM.
Key findings are ...
shorturl.at/9Cz5r @miriamseif.bsky.social @awi.de @cdrmare.bsky.social
1/x
(sorry for the self-promotion under your thread, Jens)
Text snippets from a paper, highlighted: Effects of this approach on surface ocean pH are small
Text snippets from a paper
Text snippets from a paper, highlight in yellow
🌊 Related, from 2016 (iopscience.iop.org/article/10.1...):
"However, after equilibration with the atmosphere, the addition of 3 Pg olivine yr−1 is not compensating the effect of ocean acidification"
@davidho.bsky.social had a nice tweet about this, too.
Everyone, take a note of this, please.
Ocean alkalinity enhancement does hardly counter ocean acidification.
