Our new paper w/ @MengyangZhou, E.Yankovsky, @alicia_karspeck, S.Bachman,.T.Nicholas, @_david_ho_ and @matt_c_long (@_CWorthy) on mapping the efficiency of Ocean Alkalinity Enhancement (OAE) across the global ocean is out as a preprint: . #mcdr #CDR #CO2

In theory, this could scale to ~100Mt negative CO2 emissions and be revenue positive: Negative emissions credits + resale of recycled aggregate for new concrete + avoidance of landfill costs.

Our new paper is out: We're exploring the intersection of electrochemical OAE and concrete waste recycling - turns out they're a match made in heaven. One produces weak waste acid and the other requires weak acid to valorize demolition waste! .

RT @KennethCassel: how come a company founded over 100 years ago has the fastest site on the internet?

Now with interactive map !.

RT @ClownVamp: New book in the AI art book collection! 📚 . Portraits of Imaginary People (2019).By @mtyka . Exploring the ways the ai-gener….

Wow 🤯 - my former post doc advisor David Baker won the Nobel Prize for Protein Design. Huge congrats - well deserved! David and his lab have been a force of nature in protein design. Incredible watching the progress over the last 20 years. #NobelPrize2024.

RT @NobelPrize: BREAKING NEWS.The Royal Swedish Academy of Sciences has decided to award the 2024 #NobelPrize in Chemistry with one half to….

RT @doug_parr: Britain's most productive wind farm comes online and is sending power south from the Shetland Isles . Expected to have a loa….

RT @sokrypton: Ever wondered how many amino acids you can mutate to alanine and AlphaFold2 still predicts same structure? 🤔For denovo desig….

RT @louriealexandre: En 2019, j’achetais ce livre de deepfakes par l’artiste @mtyka. Son intro était très politique, intitulée « Les conséq….

RT @lerandomart: The Portal by @mtyka

Prepping my slides for my short presentation on our Global OAE Efficiency Atlas at #EGU24 on Friday 17:35–17:45|EGU24-1429|OS3.5.Preprint: #mCDR

These 4 regions are also shown below as individual examples. We show that the spread and subduction of the excess alkalinity plume is quite different at different latitudes. The loss of excess alkalinity in the north Atlantic is very apparent in the vertical profiles (iii)

This spread is quite significant. We quantified the spread for all the simulated locations and found that equilibration occurs over areas spanning 1000s of kilometers. This poses significant challenges for high resolution regional models.

We also analyzed the contributions of surface gas exchange (e.g. wind speeds), surface carbonate chemistry and vertical transport and show that all three play a significant role in determining the equilibration kinetics as the plume spreads over time.

E.g. in the subtropics the early, fast equilibration is truncated due to subduction. But unlike at the poles, equilibration continues here, due to reemergence of the subducted alkalinity, albeit at a slower pace. This leads to two distinctive equilibration phases.

We also developed a simple three box model that accounts for the various shapes and stages of the equilibration curve. The fitted parameters help rationalize the different latitudinal zones observed in the simulation.

Conversely, equatorial regions were the slowest but eventually reached near-complete equilibration after 15 years. Polar regions, esp. near regions of deep water formations were fast at first but quickly stalled due to loss of alkalinity to the deep.

We ran pulsed alkalinity simulations in 690 different locations and 4 different seasons for a total of 2760 runs. We found strong seasonality in subtropical & polar regions. Subpolar regions equilibrated the fastest and most completely.