#alkalinity — Public Fediverse posts

#WeekendReading: Hu et al., trying a new approach to figure out past #alkalinity and #phosphate levels (at least diagenetically) using carbonate-associated phosphorus.

Link: https://www.sciencedirect.com/science/article/pii/S0009254125005017

An interactive tool to explore the efficiency of ocean alkalinity enhancement (OAE) to see how it will move through the ocean and result in carbon removal over time #alkalinity

https://carbonplan.org/research/oae-efficiency

New work by @bach_lennart

The experiments show that anthropogenic #alkalinity can strongly reduce the generation of natural alkalinity, thereby reducing additionality. This is because the #anthropogenic alkalinity increases the calcium carbonate saturation state, which reduces the dissolution of calcium #carbonate from sand, a natural alkalinity source.

https://bg.copernicus.org/preprints/bg-2023-122/

There is a striking difference between land- and ocean-based #CDR.

Ocean CDR ideas like adding #alkalinity or artificial upwelling imply unprecedented intervention into ocean commons, with unknown impacts on ecosystems. #Monitoring, not to mention regulating, would be practicably challenging, because ocean waters move.

Land carbon cycle is already managed by agriculture, urbanization etc. Land CDR would be a mean of already ongoing carbon rebalancing.

#climatechange #climateaction

Summary: We built an open-cell #alkalinity #titration system using #opensource & low-cost components to promote measurement accessibility. It produces TA measurements with an uncertainty of 5.3 μmol/kg (fulfilling "weather-quality" goals).

@awi @EuroGeosciences

If you haven’t read it yet, also check out this incredibly comprehensive overview on #alkalinity in #CMIP6 models, and improvements from CMIP5 to CMIP6 by Planchat et al, with Laurent Bopp, Lester Kwiatkowski and many others.

https://egusphere.copernicus.org/preprints/2022/egusphere-2022-1041/

New preprint from our group on #alkalinity biases in Earth System Models, attribution to processes, and implications for simulations of ocean alkalinity enhancement.

Claudia Hinrichs et al. @awi @EuroGeosciences #OceanNETs #MarESys #NewPaper #negativeemissions #oceanography #CMIP6

https://doi.org/10.5194/bg-2023-26

Our new paper (with Jing He) on #ocean #alkalinity and #OAE / #mCDR is out: https://bg.copernicus.org/articles/20/27/2023/
We examine the sensitivity of pH and #CaCO3 sensitivity along different coasts as well as the equilibration timescale of #CO2 uptake.

Our new paper (with Jing He) on #ocean #alkalinity and #OAE / #mCDR is out: https://bg.copernicus.org/articles/20/27/2023/
We examine the sensitivity of pH and #CaCO3 sensitivity along different coasts as well as the equilibration timescale of #CO2 uptake.

Our new paper (with Jing He) on #ocean #alkalinity and #OAE / #mCDR is out: https://bg.copernicus.org/articles/20/27/2023/
We examine the sensitivity of pH and #CaCO3 sensitivity along different coasts as well as the equilibration timescale of #CO2 uptake.

Our new paper (with Jing He) on #ocean #alkalinity and #OAE / #mCDR is out: https://bg.copernicus.org/articles/20/27/2023/
We examine the sensitivity of pH and #CaCO3 sensitivity along different coasts as well as the equilibration timescale of #CO2 uptake.

Our new paper (with Jing He) on #ocean #alkalinity and #OAE / #mCDR is out: https://bg.copernicus.org/articles/20/27/2023/
We examine the sensitivity of pH and #CaCO3 sensitivity along different coasts as well as the equilibration timescale of #CO2 uptake.

For carbon dioxide removal (#CDR), does anyone else think of #EnhancedWeathering, which is usually thought of as a terrestrial technique, as just another way to eventually add #alkalinity to the #ocean so it's really ocean CDR and #OceanAlkalinityEnhancement (#OAE)?

For carbon dioxide removal (#CDR), does anyone else think of #EnhancedWeathering, which is usually thought of as a terrestrial technique, as just another way to eventually add #alkalinity to the #ocean so it's really ocean CDR and #OceanAlkalinityEnhancement (#OAE)?

For carbon dioxide removal (#CDR), does anyone else think of #EnhancedWeathering, which is usually thought of as a terrestrial technique, as just another way to eventually add #alkalinity to the #ocean so it's really ocean CDR and #OceanAlkalinityEnhancement (#OAE)?

For carbon dioxide removal (#CDR), does anyone else think of #EnhancedWeathering, which is usually thought of as a terrestrial technique, as just another way to eventually add #alkalinity to the #ocean so it's really ocean CDR and #OceanAlkalinityEnhancement (#OAE)?

For carbon dioxide removal (#CDR), does anyone else think of #EnhancedWeathering, which is usually thought of as a terrestrial technique, as just another way to eventually add #alkalinity to the #ocean so it's really ocean CDR and #OceanAlkalinityEnhancement (#OAE)?

#Frontier just announced the second round of #carbon #dioxide #removal (#CDR) purchases by #Stripe and #Shopify. One of the companies is Captura, which is supposedly doing "Direct Ocean Capture."

Removing CO₂ from seawater is not CDR (you have to wait until that seawater equilibrates with atmospheric CO₂) so I don't know how this is better than Ocean #Alkalinity Enhancement.

But I don't care. I want to see them build this thing exactly as it's rendered here.

https://frontierclimate.com/writing/fall-2022-purchases

It’s been a crazy morning. I’m a mad scientist testing #saltwater to make sure I can do the #coral move to the new #reef tank.

#Alkalinity has been so unstable throughout the week. I think the new system needs more surfaces coated with magnesium ions. My assumption is that I’m losing bicarbonate to rock /surface absorption in the larger tank.