I started a marine biogeochemistry podcast, where I ask scientists questions about the cycling of elements through the ocean. This is a place where we can nerd it out, for scientists and marine science students. Listen here, or spotify/apple podcasts applied-marine-biogeochemistry.org/podcast/

Podcast | Applied Marine Biogeochemistry Group

Marine biogeochemistry studies how elements like carbon and phosphorus move through the ocean. In this podcast, we explore the processes that drive this...

applied-marine-biogeochemistry.org

A new cross-journal @natureportfolio.nature.com collection on carbon dioxide removal (#CDR) is now open for submissions until 16 January 2027. Bringing together science on risks, opportunities, and accountability. Edited by Jay Fuhrman and me go.nature.com/48dU6V8 #CDR #ClimateScience #mCDR 🌊

Carbon Dioxide Removal

In this cross-journal collection, we showcase articles that help with understanding how carbon dioxide removal can contribute to climate change mitigation.

go.nature.com

‼️Check out our new paper led by Linn J. Hoffmann and @bachlennart.bsky.social on "Monitoring, reporting, and verification of marine carbon dioxide removal: exploring scientific consensus and divergences across continents". #mCDR 🌊 @imev-mer.fr @iddri.bsky.social online.ucpress.edu/elementa/art...

Join us on April 20 for a discussion of recent developments in, and future directions for, mCDR governance under the London Convention and Protocol. Register at: buff.ly/3lFOtf9

I created an autonomous AI agent that acts as evangelist for Carbon Dioxide Removal -- in just one day using agentic AI and OpenClaw.

New commentary on marine benthic carbon modeling and data synthesis 🌊 @usocb.bsky.social agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Elucidating the Role of Marine Benthic Carbon in a Changing World

New observations should prioritize easier-to-collect variables to rapidly increase temporal and spatial coverage of benthic data Multi-variable data sets need to be harmonized to provide comprehe...

agupubs.onlinelibrary.wiley.com

New study by Dong et al. shows that #bubble-mediated #CO2 transfer favors invasion based on field evidence. They introduce an asymmetric #BulkFlux equation, suggesting that the global #ocean may absorb ~15% more #CO2 than previously estimated. www.nature.com/articles/s41...

@agu.org New in #JGR a study on 🌊 Ocean Alkalinity Enhancement: higher alkalinity speeds up growth of key #coccolithophores, but at very high TA calcification falters & shells deform. Authors suggest TA <~3,000 μmol kg−1 as a safer ecosystem boundary. doi.org/10.1029/2025... #protistsonsky

The Physiological Response of Contrasting Coccolithophore Species to Ocean Alkalinity Enhancement

Increased alkalinity significantly boosts growth rates of coccolithophores Gephyrocapsa huxleyi and Coccolithus braarudii Divergent responses between species arise as large C. braarudii rely on C...

doi.org

"Natural CO2 removal is increasingly being claimed as anthropogenic climate mitigation. This misrepresentation is already prevalent for forests and coastal ecosystems; there is now the risk of the error reoccurring for open-ocean CO2 uptake via the biological carbon pump."\ 🌊 rdcu.be/eOooz

Natural carbon uptake by ocean biology will not deliver credible carbon credits

Nature Reviews Earth & Environment - Natural CO2 removal is increasingly being claimed as anthropogenic climate mitigation. This misrepresentation is already prevalent for forests and coastal...

rdcu.be

A new guide on best practices for engaging coastal communities on ocean alkalinity enhancement by Sara Nawaz and Giulia Belotti. 🌊 edspace.american.edu/carbonremova...

Kind words by Mallory Ringham from Ebb Carbon about research informing the "Ocean Alkalinity Enhancement Pelagic Impact Intercomparison Project" #OAEPIIP. 🌊 Agreed, the key benefit of OAEPIIP is bringing the OAE research community together. onlinelibrary.wiley.com/doi/full/10....

Some of the climate benefits of forestry and revegetation projects are erased by the fact that they reduce the reflectivity of Earth's surface. 🧪

Accounting for albedo in carbon market protocols - Nature Communications

The paper analyzes the impact of omitting biophysical effects from carbon credits on climate mitigation. It shows that some Voluntary Carbon Market projects may result in net warming due to albedo whi...

nature.com

Last week we hosted the 4th webinar in our GGR Insights series. In 'Making space for "place" in carbon removal: learning from the communities of St Ives Bay', we explored a marine CO2 removal trial in Cornwall & the community response to it. Watch the recording on YouTube: youtu.be/_MgoETf3-Sg?...

Making space for “place” in carbon removal: learning from the communities of St Ives Bay

This is a recording of the fourth webinar in the GGR Insights series, which presents the latest research and debates what is needed to enable the sustainable scale-up of greenhouse gas removal in the…

youtu.be

🌊 New paper out today: Assessing the interaction between ocean alkalinity enhancement 🚢 and phytoplankton🦠 in an Earth System Model 🌐 #mCDR #OAE #ESM bg.copernicus.org/articles/22/...

Interactions between ocean alkalinity enhancement and phytoplankton in an Earth system model

Abstract. The functioning and efficiency of ocean alkalinity enhancement (OAE) as a CO2 removal strategy is well investigated in model studies, but risks for the ecosystem are presently not considered...

bg.copernicus.org

Hello! we have a new paper out today in @science.org reviewing Calcifying Plankton : from Biomineralization to Global change 🌊🧪🐚 www.science.org/doi/10.1126/...

Calcifying plankton: From biomineralization to global change

The cycling of calcium carbonate (CaCO3) in the ocean is closely linked to seawater alkalinity and the regulation of atmospheric CO2. In the modern pelagic ocean, almost all CaCO3 is produced by three...

science.org

Happy #FieldworkFriday from our SUSTech students who are busy in Dapeng running large-scale incubations to look at the side-effects of Ocean Alkalinity Enhancement on marine ecosystems 🌊

Still looking for 1 more guest editor :-) 🌊

Lennart Bach@bachlennart.bsky.social · 10mo ago

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/...

It is good to see that a diverse set of stakeholders from Tasmania have a nuanced view on marine CO2 removal, specifically Ocean Alkalinity Enhancement. This is encouraging and, indeed, important to follow their request and inform the public more. 🌊 www.nature.com/articles/s43...

Stakeholders have knowledge priorities beyond local impacts for responsible marine-based carbon dioxide removal in Tasmania - Communications Earth & Environment

Tasmanian stakeholders require targeted knowledge on ocean alkalinity enhancement to develop informed views, particularly regarding feasibility, impacts, governance, and policy objectives, according t...

nature.com

"Carbon credits are failing to help with climate change — here’s why. The idea that emissions can be offset through projects that claim to avoid releases or to remove carbon dioxide from the atmosphere is fatally flawed." by Macintosh et al. www.nature.com/articles/d41...

Carbon credits are failing to help with climate change — here’s why

The idea that emissions can be offset through projects that claim to avoid releases or to remove carbon dioxide from the atmosphere is fatally flawed.

nature.com

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/...

Technical note: Ocean Alkalinity Enhancement Pelagic Impact Intercomparison Project (OAEPIIP)

Abstract. Ocean alkalinity enhancement (OAE) aims to transfer carbon dioxide (CO2) from the atmosphere to the ocean by increasing the capacity of seawater to store CO2. The potential effects of OAE-in...

bg.copernicus.org

Lethal by design? Guiding environmental assessments of ocean alkalinity enhancement toward realistic contextualization of the alkalinity perturbation. cdrxiv.org/preprint/457

Lethal by design? Guiding environmental assessments of ocean alkalinity enhancement toward realistic contextualization of the alkalinity perturbation – CDRXIV

Ocean Alkalinity Enhancement (OAE) aims to mitigate climate change by increasing the chemical capacity of seawater to store anthropogenic CO2. OAE can be implemented through multiple pathways, each of...

cdrxiv.org

Seagrasses are great but this is false. Most carbon in the ocean is dissolved inorganic carbon and seagrass carbon is a tiny fraction of that. The mixing of stock and flux is also unhelpful. The only way to stop climate change is not burning fossil fuels. reasonstobecheerful.world/seagrass-res...

Does ocean model resolution change how fast CO₂ equilibrates with the air? In our new study with @bachlennart.bsky.social and @mtyka.bsky.social, we found small resolution effects but large inter-model spreads —highlighting the next goal for improving mCDR predictions. link: doi.org/10.1029/2024...

Interesting study by colleagues in Portugal. Evaluating ocean alkalinity enhancement for carbon dioxide removal: evidence from a one-year saltmarsh field experiment 🌊 egusphere.copernicus.org/preprints/20...

Evaluating ocean alkalinity enhancement for carbon dioxide removal: evidence from a one-year saltmarsh field experiment

Abstract. Ocean alkalinity enhancement is a promising carbon dioxide removal (CDR) strategy aimed at reducing atmospheric carbon dioxide (CO2) concentrations. To evaluate its effectiveness and potenti...

egusphere.copernicus.org

Today, we published a study long in the making on how upper and subsurface tropical Pacific waters responded (and maybe will adjust) to warmer global climate. Here’s the story of how we got here after 15 years. many authors but shout out @jfarmersalmanac.bsky.social 🌊 www.science.org/doi/10.1126/...

Persistent eastern equatorial Pacific Ocean upwelling since the warm Pliocene

Upwelling generates a nutrient-rich “cold tongue” in the eastern equatorial Pacific Ocean (EEP), with impacts on global climate, oceanic biological productivity, and the carbon cycle. The cold tongue ...

science.org

🌟 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! ⬇️

New mCDR papers this month: www.frontiersin.org/journals/cli... www.frontiersin.org/journals/env...

Frontiers | Regional ocean biogeochemical modeling challenges for predicting the effectiveness of marine carbon dioxide removal

Effectively scaling diverse marine carbon dioxide removal (mCDR) technologies from pilot-scale demonstrations to industrial-scale deployments requires a quan...

frontiersin.org

1/n This study led by @aaronferderer.bsky.social tested how 5 diatom species respond to broad ranges of seawater carbonate conditions. Goal was to determine carbonate chemistry niches and to inform Ocean Alkalinity Enhancement (OAE) and Ocean Acidification (OA) 🌊 www.science.org/doi/10.1126/...

Carbonate chemistry fitness landscapes inform diatom resilience to future perturbations

Diatom growth rates are determined by concentrations of CO2 and H+ across broad carbonate chemistry landscapes.

science.org

Finally a topic where the "moral hazard" argument may be more relevant than for CDR.

Matt Zoller Seitz@mattzollerseitz.bsky.social · 11mo ago

"school shooting industry"

Our new paper with Mengyang Zhou, Elizabeth Yankovsky, and Dustin Carroll is out as a preprint: egusphere.copernicus.org/preprints/20... "Substantial inter-model variation in OAE efficiency between the CESM2/MARBL and ECCO-Darwin ocean biogeochemistry models"