Mike Tyka
@mtyka.bsky.social
#Climate, #science, #MachineLearning, #SciArt, #Biochemistry, #AI #Media #Art, #Sculpture, #GlassArt
Climate Researcher @Google
Prev: Protein Folding @UW with David Baker, PhD @Bristol
https://fediscience.org/@mtyka
https://www.miketyka.com
Climate Researcher @Google
Prev: Protein Folding @UW with David Baker, PhD @Bristol
https://fediscience.org/@mtyka
https://www.miketyka.com
Finally we tried to simply turning off all the sophisticated biology modeling in ECCO-Darwin (i.e. the Darwin part). It turned out that this made virtually no difference to the OAE uptake trajectory - OAE-driven CO2 uptake appears to be primarily a function of bulk transport and gas exchange.
September 4, 2025 at 4:47 PM
Finally we tried to simply turning off all the sophisticated biology modeling in ECCO-Darwin (i.e. the Darwin part). It turned out that this made virtually no difference to the OAE uptake trajectory - OAE-driven CO2 uptake appears to be primarily a function of bulk transport and gas exchange.
We also looked at the difference attributable to the divergent prediction of the horizontal plume trajectory (even if the gas exchange parametrization had been equal) and find that plume trajectory is significant. This is especially true of plumes end up going under ice or towards a high-wind zone.
September 4, 2025 at 4:47 PM
We also looked at the difference attributable to the divergent prediction of the horizontal plume trajectory (even if the gas exchange parametrization had been equal) and find that plume trajectory is significant. This is especially true of plumes end up going under ice or towards a high-wind zone.
We tried to figure out what other aspects of each model are responsible for the observed differences (other than subduction). The first suspect is the parameterization of wind speed and carbonate chemistry. The difference in wind params (and therefore gas exchange velocity) was the major influence.
September 4, 2025 at 4:47 PM
We tried to figure out what other aspects of each model are responsible for the observed differences (other than subduction). The first suspect is the parameterization of wind speed and carbonate chemistry. The difference in wind params (and therefore gas exchange velocity) was the major influence.
It's interesting too that the models disagreed more for coastal injection sites but agreed better for sites further off-shore. This might have to do with the complexity of the near-shore water movements.
September 4, 2025 at 4:47 PM
It's interesting too that the models disagreed more for coastal injection sites but agreed better for sites further off-shore. This might have to do with the complexity of the near-shore water movements.
The inter-model variation is greater than the inter-annual variation within a model.
September 4, 2025 at 4:47 PM
The inter-model variation is greater than the inter-annual variation within a model.
Unsurprisingly there is a strong correlation with the rate of subduction experienced by the alkalinity plume. We find this is the primary driver of the differences. If the model predicts faster subduction, the OAE efficiency suffers more.
September 4, 2025 at 4:47 PM
Unsurprisingly there is a strong correlation with the rate of subduction experienced by the alkalinity plume. We find this is the primary driver of the differences. If the model predicts faster subduction, the OAE efficiency suffers more.
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"
September 4, 2025 at 4:47 PM
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"
Incredible #cryo electron #tomography structures of the #mitochondrial membranes and the embedded respiratory chain
www.researchgate.net/publication/...
www.researchgate.net/publication/...
March 27, 2025 at 5:51 AM
Incredible #cryo electron #tomography structures of the #mitochondrial membranes and the embedded respiratory chain
www.researchgate.net/publication/...
www.researchgate.net/publication/...
Wow. That's quite an amazing rock Perseverance rover just found on Mars. Made of thousands of millimeter sizes spheres, some look hollow! science.nasa.gov/blog/shockin...
March 22, 2025 at 9:24 PM
Wow. That's quite an amazing rock Perseverance rover just found on Mars. Made of thousands of millimeter sizes spheres, some look hollow! science.nasa.gov/blog/shockin...
Incredible image of a protostar disk from JWST iopscience.iop.org/article/10.3...
esawebb.org/images/potm2...
esawebb.org/images/potm2...
February 5, 2025 at 11:39 PM
Incredible image of a protostar disk from JWST iopscience.iop.org/article/10.3...
esawebb.org/images/potm2...
esawebb.org/images/potm2...
Things are falling apart fast ...
February 5, 2025 at 3:41 AM
Things are falling apart fast ...
I'd love to see a similar comparison but not in terms of money but wattage or joules consumed. Human brain is what - 25W ?
December 22, 2024 at 6:14 PM
I'd love to see a similar comparison but not in terms of money but wattage or joules consumed. Human brain is what - 25W ?
TIL: In case you're wondering why every new drug name these days ends in "-mab" - there's more sense to drug names than I realized. -mab is "monoclonal antibody". www.bigmoleculewatch.com/2016/08/24/w...
December 14, 2024 at 12:43 PM
TIL: In case you're wondering why every new drug name these days ends in "-mab" - there's more sense to drug names than I realized. -mab is "monoclonal antibody". www.bigmoleculewatch.com/2016/08/24/w...
Amazing interactive map of history www.oldmapsonline.org/en/history/r...
December 14, 2024 at 2:57 AM
Amazing interactive map of history www.oldmapsonline.org/en/history/r...
Completely surreal, please someone pinch me
December 11, 2024 at 11:24 AM
Completely surreal, please someone pinch me
Crisp morning in Stockholm
December 10, 2024 at 10:57 AM
Crisp morning in Stockholm
Oh and don't forget to check out this beautiful interactive online tool where you can visualize all the Alkalinity plumes from all the runs: carbonplan.org/research/oae... built by Thomas Nicholas & CarbonPlan carbonplan.org/research/oae...
November 8, 2024 at 5:43 PM
Oh and don't forget to check out this beautiful interactive online tool where you can visualize all the Alkalinity plumes from all the runs: carbonplan.org/research/oae... built by Thomas Nicholas & CarbonPlan carbonplan.org/research/oae...
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. However, the extent of spread is not uniform.
November 8, 2024 at 5:30 PM
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. However, the extent of spread is not uniform.
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 and it's changes over time, as the plumes spread to other areas.
November 8, 2024 at 5:30 PM
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 and it's changes over time, as the plumes spread to other areas.
E.g. the subtropics 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.
November 8, 2024 at 5:29 PM
E.g. the subtropics 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 of the equilibration curve. The fitted parameters help rationalize the different latitudinal zones observed in the simulation.
November 8, 2024 at 5:29 PM
We also developed a simple three box model that accounts for the various shapes of the equilibration curve. The fitted parameters help rationalize the different latitudinal zones observed in the simulation.
These four regions are also shown below as individual examples. We show that the spread and subduction of the alkalinity deficient plume is quite different at different latitudes.
November 8, 2024 at 5:28 PM
These four regions are also shown below as individual examples. We show that the spread and subduction of the alkalinity deficient plume is quite different at different latitudes.
Our new paper on mapping the Ocean Alkalinity Enhancement (OAE) Efficiency across the global ocean is finally out in Nat. Clim. Change ! #mcdr #cdr #co2
rdcu.be/dZyxW
We ran pulsed alkalinity simulations in 690 different locations and 4 different seasons for a total of 2760 runs.
rdcu.be/dZyxW
We ran pulsed alkalinity simulations in 690 different locations and 4 different seasons for a total of 2760 runs.
November 8, 2024 at 5:26 PM
Our new paper on mapping the Ocean Alkalinity Enhancement (OAE) Efficiency across the global ocean is finally out in Nat. Clim. Change ! #mcdr #cdr #co2
rdcu.be/dZyxW
We ran pulsed alkalinity simulations in 690 different locations and 4 different seasons for a total of 2760 runs.
rdcu.be/dZyxW
We ran pulsed alkalinity simulations in 690 different locations and 4 different seasons for a total of 2760 runs.