Looks like “serious adverse events” were driven almost entirely by ventilator issues (high peak pressures, interruptions in ventilation, etc) but without clinically significant impact on oxygenation, pH, or pCO2. Unclear how much clinical impact making this change would have.
February 9, 2026 at 6:48 PM
Looks like “serious adverse events” were driven almost entirely by ventilator issues (high peak pressures, interruptions in ventilation, etc) but without clinically significant impact on oxygenation, pH, or pCO2. Unclear how much clinical impact making this change would have.
"Continuous sterane and phytane δ13C record reveals a substantial pCO2 decline since the mid-Miocene"; www.nature.com/articles/s41...
Continuous sterane and phytane δ13C record reveals a substantial pCO2 decline since the mid-Miocene - Nature Communications
Molecular fossils from marine phytoplankton reveal a substantial decline in CO2 values over the past 15 million years and may support higher climate sensitivity than previously reported.
www.nature.com
February 2, 2026 at 5:11 PM
"Continuous sterane and phytane δ13C record reveals a substantial pCO2 decline since the mid-Miocene"; www.nature.com/articles/s41...
The study explores a new way to estimate ancient atmospheric CO₂ levels using chemical signals preserved in conodonts. It shows that differences in carbon isotopes between these fossils and surrounding rocks track major climate shifts during a key period as Earth moved from a warm to an icy climate
February 1, 2026 at 8:55 PM
The study explores a new way to estimate ancient atmospheric CO₂ levels using chemical signals preserved in conodonts. It shows that differences in carbon isotopes between these fossils and surrounding rocks track major climate shifts during a key period as Earth moved from a warm to an icy climate
And since someone's going to ask, this is the first paper we put out on this, almost a decade ago now. Probably about time to revisit the topic.
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
![The mean seasonal CO2 flux [mmol m−2 day−1] of the Eastern Mediterranean ultra-oligotrophic sub-basins (located South of Crete), estimated through thermodynamic calculations [pCO2 (sw) and SST relationship, using the mean seasonal SST and salinity data (MedATLAS) and wind data (MedGloss coastal stations). The more red it is, the more CO2 is being released into the atmosphere.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:ywwbhwuq4sszjve7kdshnahd/bafkreiglr4pt7xng2jz2263rnh7334quz3mirflqbmu2e3j3ahednzc6au@jpeg)
January 29, 2026 at 6:01 AM
And since someone's going to ask, this is the first paper we put out on this, almost a decade ago now. Probably about time to revisit the topic.
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Har du hørt om Kussmauls resp? Hyperglycemipasienter (alvorlig) hyperventilerer for å kompensere for metabolsk acidose, prøver å kvitte seg med Co2 for å øke PH i blodet. Disse pas har ofte skyhøy PO2 og lav PCO2 på blodgass, samt elektrolyttforstyrr.
January 28, 2026 at 10:59 AM
Har du hørt om Kussmauls resp? Hyperglycemipasienter (alvorlig) hyperventilerer for å kompensere for metabolsk acidose, prøver å kvitte seg med Co2 for å øke PH i blodet. Disse pas har ofte skyhøy PO2 og lav PCO2 på blodgass, samt elektrolyttforstyrr.
one of the biggest differences is sodium load-- bicarb pushes in the states are 8.4% sodium which is a huge osmotic load. More to the point in acidosis, there is more dissolved pCO2 in the fast pushed amp than in the slow infusion (50meq/50cc vs 150meq/1000cc).
January 24, 2026 at 3:10 PM
one of the biggest differences is sodium load-- bicarb pushes in the states are 8.4% sodium which is a huge osmotic load. More to the point in acidosis, there is more dissolved pCO2 in the fast pushed amp than in the slow infusion (50meq/50cc vs 150meq/1000cc).
The weathering feedback, how reaction with rock balances out athmospheric pCO2, is usually considered mostly a land-atmosphere interaction. But the ions from that weatherig ends up in the ocean, and affect its capacity to absorb CO2 as well. 🧪⚒️🌊
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
![The effect of silicate weathering on [Ca2+sw], and [Ca2+sw] on pCO2 in a carbon cycle box model. (A) Silicate weathering (SiW)-climate relationships as implemented in DeepCarb (this study) and LOSCAR with a modern empirical estimate shown for comparison based on the SiW–temperature relationship coupled with the same CO2–temperature relationship as implemented in DeepCarb. We stress that the assumption that a relationship based on modern regional heterogeneity is equivalent to the effect of global climate change on geologic time is highly uncertain such that this comparison is intended to be illustrative only. (B) The range of surface ocean Ωc–CaCO3 export slopes implemented in DeepCarb. (C–N) DeepCarb model results. (C, F, I, and L) The evolution of [Ca2+sw], pCO2, TAlk, and CaCO3 burial in 1000 DeepCarb simulations in which the SiW–CO2 relationship was increased by 25% over 8 My (starting at 1 My) and then held at that value. This was implemented by shifting the slopes shown in panel A up the y axis and does not mean that a constant SiW rate was prescribed (see text for details). Individual simulations are color-coded according to the slope of the relationships shown in panels A and B, where yellow lines represent models with a steeper SiW–CO2 and shallower Ωc–CaCO3 export slope. It is not possible to change [Ca2+sw] by perturbing the model in this way alone. (D, G, J, and M) Equivalent simulations in which [Ca2+sw] was directly forced at a rate approximately equivalent to the Neogene rate of change (Fig. 1A). In simulations with a shallow SiW–CO2 slope, pCO2 decreases by up to ~800 ppmv. (E, H, K, and N) Equivalent simulations in which SiW was perturbed along with the [Ca2+] of the SiW product to a degree necessary to drive a twofold [Ca2+sw] decrease.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:ywwbhwuq4sszjve7kdshnahd/bafkreicnp4rmrzmof2splrndtovuvjiswqrxo2mnyioijmobah6icpbz54@jpeg)
January 24, 2026 at 6:41 AM
The weathering feedback, how reaction with rock balances out athmospheric pCO2, is usually considered mostly a land-atmosphere interaction. But the ions from that weatherig ends up in the ocean, and affect its capacity to absorb CO2 as well. 🧪⚒️🌊
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
What practical sensor innovations are emerging from the GEORGE project? 💡In the second part of this Q&A series, we interviewed Nadja Kinski from #4HJenaEngineering about their pCO2 sensor.
What makes the sensor unique? Watch the video to find out!
👉 Learn more: george-project.eu/2026/01/22/q...
What makes the sensor unique? Watch the video to find out!
👉 Learn more: george-project.eu/2026/01/22/q...
January 22, 2026 at 11:46 AM
What practical sensor innovations are emerging from the GEORGE project? 💡In the second part of this Q&A series, we interviewed Nadja Kinski from #4HJenaEngineering about their pCO2 sensor.
What makes the sensor unique? Watch the video to find out!
👉 Learn more: george-project.eu/2026/01/22/q...
What makes the sensor unique? Watch the video to find out!
👉 Learn more: george-project.eu/2026/01/22/q...
🌻さんとpco②
🌻さんがこれから何を創造していくのか窺える機会があるといいな。沢山制作楽しんでほしい
🌻さんがこれから何を創造していくのか窺える機会があるといいな。沢山制作楽しんでほしい
January 20, 2026 at 2:47 PM
🌻さんとpco②
🌻さんがこれから何を創造していくのか窺える機会があるといいな。沢山制作楽しんでほしい
🌻さんがこれから何を創造していくのか窺える機会があるといいな。沢山制作楽しんでほしい
ABG is the gold standard, but arterial sticks hurt & carry risks. A Kidney360 study (5,419 paired samples) derived formulas to estimate arterial pH, pCO₂ & HCO₃⁻ from VBG—meeting acceptable clinical expectations. #Nephrology #CriticalCare #AcidBase
journals.lww.com/kidney360/ab...
journals.lww.com/kidney360/ab...
https://journals.lww.com/kidney360/abstract/9900/transforming_the_venous_blood_gas_to_the_arterial.847.aspx
journals.lww.com
January 14, 2026 at 4:19 PM
ABG is the gold standard, but arterial sticks hurt & carry risks. A Kidney360 study (5,419 paired samples) derived formulas to estimate arterial pH, pCO₂ & HCO₃⁻ from VBG—meeting acceptable clinical expectations. #Nephrology #CriticalCare #AcidBase
journals.lww.com/kidney360/ab...
journals.lww.com/kidney360/ab...
Our first #citizenscience platform, the #Antarctic expedition yacht #HansHansson, is facilitating a demo mission for the #OceanPack RACE resulting in real-time #pCO₂ data!
👉 tricuso.eu/news/hans-ha...
Thanks to 60 South for making this possible!
@horizoneu.bsky.social #REA
@geomarkiel.bsky.social
👉 tricuso.eu/news/hans-ha...
Thanks to 60 South for making this possible!
@horizoneu.bsky.social #REA
@geomarkiel.bsky.social
January 13, 2026 at 2:17 PM
Our first #citizenscience platform, the #Antarctic expedition yacht #HansHansson, is facilitating a demo mission for the #OceanPack RACE resulting in real-time #pCO₂ data!
👉 tricuso.eu/news/hans-ha...
Thanks to 60 South for making this possible!
@horizoneu.bsky.social #REA
@geomarkiel.bsky.social
👉 tricuso.eu/news/hans-ha...
Thanks to 60 South for making this possible!
@horizoneu.bsky.social #REA
@geomarkiel.bsky.social
Direct Constraints From 1.4 Ga Fluid Inclusions Reveal A Fair Climate And Oxygenated Atmosphere
https://www.europesays.com/ie/275307/
(A) Predicted pO2 (red line) and (B) pCO2 (purple line) values are compared for a range of possible…
https://www.europesays.com/ie/275307/
(A) Predicted pO2 (red line) and (B) pCO2 (purple line) values are compared for a range of possible…
Direct Constraints From 1.4 Ga Fluid Inclusions Reveal A Fair Climate And Oxygenated Atmosphere - Ireland
The Mesoproterozoic eon, often regarded as mundane and static, lays the foundation for dramatic transformations in Earth’s physical and biological evolution
www.europesays.com
January 9, 2026 at 4:30 AM
Direct Constraints From 1.4 Ga Fluid Inclusions Reveal A Fair Climate And Oxygenated Atmosphere
https://www.europesays.com/ie/275307/
(A) Predicted pO2 (red line) and (B) pCO2 (purple line) values are compared for a range of possible…
https://www.europesays.com/ie/275307/
(A) Predicted pO2 (red line) and (B) pCO2 (purple line) values are compared for a range of possible…
Direct Constraints From 1.4 Ga Fluid Inclusions Reveal A Fair Climate And Oxygenated Atmosphere
https://www.newsbeep.com/nz/223759/
(A) Predicted pO2 (red line) and (B) pCO2 (purple line) values are compared for a range of possible…
https://www.newsbeep.com/nz/223759/
(A) Predicted pO2 (red line) and (B) pCO2 (purple line) values are compared for a range of possible…
Direct Constraints From 1.4 Ga Fluid Inclusions Reveal A Fair Climate And Oxygenated Atmosphere - New Zealand News Beep
The Mesoproterozoic eon, often regarded as mundane and static, lays the foundation for dramatic transformations in Earth’s physical and biological evolution
www.newsbeep.com
January 8, 2026 at 8:15 PM
Direct Constraints From 1.4 Ga Fluid Inclusions Reveal A Fair Climate And Oxygenated Atmosphere
https://www.newsbeep.com/nz/223759/
(A) Predicted pO2 (red line) and (B) pCO2 (purple line) values are compared for a range of possible…
https://www.newsbeep.com/nz/223759/
(A) Predicted pO2 (red line) and (B) pCO2 (purple line) values are compared for a range of possible…
Learn more about Pacific Arctic #OceanAcidification from this study by Caero et al., 2025. 🧪🌊🦑
doi.org/10.1029/2024...
doi.org/10.1029/2024...
January 8, 2026 at 5:55 PM
Learn more about Pacific Arctic #OceanAcidification from this study by Caero et al., 2025. 🧪🌊🦑
doi.org/10.1029/2024...
doi.org/10.1029/2024...
Great news: pCO₂ data from Hans Hansson is live on the Beluga Portal! Check it out here: beluga.geomar.de/tricuso_hans...
BELUGA Navigator
beluga.geomar.de
January 8, 2026 at 11:44 AM
Great news: pCO₂ data from Hans Hansson is live on the Beluga Portal! Check it out here: beluga.geomar.de/tricuso_hans...
The year 2025 saw ICOS data being used in a broad range of scientific studies, including:
🏙️ requirements for urban CO₂ monitoring
🚢 large-scale intercomparison of ocean pCO₂ instruments
🌐 research into network expansion and synergy
👉 Read our summary of the highlights: https://ow.ly/GFTC50XTknr
🏙️ requirements for urban CO₂ monitoring
🚢 large-scale intercomparison of ocean pCO₂ instruments
🌐 research into network expansion and synergy
👉 Read our summary of the highlights: https://ow.ly/GFTC50XTknr
January 8, 2026 at 10:41 AM
The year 2025 saw ICOS data being used in a broad range of scientific studies, including:
🏙️ requirements for urban CO₂ monitoring
🚢 large-scale intercomparison of ocean pCO₂ instruments
🌐 research into network expansion and synergy
👉 Read our summary of the highlights: https://ow.ly/GFTC50XTknr
🏙️ requirements for urban CO₂ monitoring
🚢 large-scale intercomparison of ocean pCO₂ instruments
🌐 research into network expansion and synergy
👉 Read our summary of the highlights: https://ow.ly/GFTC50XTknr
🧪 Why?
This outcome follows directly from marine CO₂ chemistry: under constant atmospheric pCO₂, even substantial increases in alkalinity lead to only small changes in pH and carbonate ion concentration.
This outcome follows directly from marine CO₂ chemistry: under constant atmospheric pCO₂, even substantial increases in alkalinity lead to only small changes in pH and carbonate ion concentration.
![Changes in seawater−carbonate chemistry due to OAE and subsequent uptake of atmospheric CO2 returning pCO2 to the pretreatment level. Conceptual diagram illustrating the effect of OAE on pH and [CO32−], considering a two-step procedure in which first TA is enhanced under otherwise isochemical conditions (DIC = const., Step 1) followed by a re-equilibration of the seawater sample with current atmospheric pCO2 (Step 2).](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:vnatj6ys5y2fjs6suxxokbh4/bafkreigsjjqb6kqlg765kwprjldtbtnbngxzfwwstyiqeiiaykwskm4ese@jpeg)
January 7, 2026 at 1:39 PM
🧪 Why?
This outcome follows directly from marine CO₂ chemistry: under constant atmospheric pCO₂, even substantial increases in alkalinity lead to only small changes in pH and carbonate ion concentration.
This outcome follows directly from marine CO₂ chemistry: under constant atmospheric pCO₂, even substantial increases in alkalinity lead to only small changes in pH and carbonate ion concentration.
🌊 Unlock the Ocean’s Hidden Chemistry!
Excited to announce #argopy 1.4.0! 🎉
Now predict nutrients (NO₃, PO₄, SiOH₄) and carbonate variables (AT, DIC, pHT, pCO₂) with CANYON-B and CONTENT models—directly from your #argofloats data. Perfect for @bgc-argo.bsky.social users !
argopy.readthedocs.io
Excited to announce #argopy 1.4.0! 🎉
Now predict nutrients (NO₃, PO₄, SiOH₄) and carbonate variables (AT, DIC, pHT, pCO₂) with CANYON-B and CONTENT models—directly from your #argofloats data. Perfect for @bgc-argo.bsky.social users !
argopy.readthedocs.io
Argo data python library documentation — argopy 1.4.0 documentation
argopy.readthedocs.io
January 6, 2026 at 8:14 AM
🌊 Unlock the Ocean’s Hidden Chemistry!
Excited to announce #argopy 1.4.0! 🎉
Now predict nutrients (NO₃, PO₄, SiOH₄) and carbonate variables (AT, DIC, pHT, pCO₂) with CANYON-B and CONTENT models—directly from your #argofloats data. Perfect for @bgc-argo.bsky.social users !
argopy.readthedocs.io
Excited to announce #argopy 1.4.0! 🎉
Now predict nutrients (NO₃, PO₄, SiOH₄) and carbonate variables (AT, DIC, pHT, pCO₂) with CANYON-B and CONTENT models—directly from your #argofloats data. Perfect for @bgc-argo.bsky.social users !
argopy.readthedocs.io
The ocean absorbs excess human emitted CO₂ from the atmosphere, and through a series of reactions, decreases seawater pH in a process known as #OceanAcidification. #OADayofAction 🧪🌊🦑
www.pmel.noaa.gov/co2/file/Haw...
📈 by #NOAA and UH Mānoa
www.pmel.noaa.gov/co2/file/Haw...
📈 by #NOAA and UH Mānoa
January 5, 2026 at 10:24 PM
The ocean absorbs excess human emitted CO₂ from the atmosphere, and through a series of reactions, decreases seawater pH in a process known as #OceanAcidification. #OADayofAction 🧪🌊🦑
www.pmel.noaa.gov/co2/file/Haw...
📈 by #NOAA and UH Mānoa
www.pmel.noaa.gov/co2/file/Haw...
📈 by #NOAA and UH Mānoa
Leticia Barbero and Denis Pierrot, supported by the NOAA Global Ocean Monitoring and Observing program, are holding a workshop on taking pCO₂ General Oceanics from ships on 10-12 March 2026 in Miami, Florida.
Full details: socat.info/wp-content/u...
Full details: socat.info/wp-content/u...
socat.info
January 5, 2026 at 1:13 PM
Leticia Barbero and Denis Pierrot, supported by the NOAA Global Ocean Monitoring and Observing program, are holding a workshop on taking pCO₂ General Oceanics from ships on 10-12 March 2026 in Miami, Florida.
Full details: socat.info/wp-content/u...
Full details: socat.info/wp-content/u...
…klappt es. Wir übergeben die Patientin im Schockraum mit einer Sättigung von 91% und einem pCO2 in der direkt erfolgten BGA von 81mmHg und einem pH von 7,18.
Ich sage allen Leuten immer „Das Beatmungsgerät hat keine Dyspnoe, das kommt zum Patienten, nicht der Patient zum Beatmungsgerät!“
Ich sage allen Leuten immer „Das Beatmungsgerät hat keine Dyspnoe, das kommt zum Patienten, nicht der Patient zum Beatmungsgerät!“
December 19, 2025 at 11:50 AM
…klappt es. Wir übergeben die Patientin im Schockraum mit einer Sättigung von 91% und einem pCO2 in der direkt erfolgten BGA von 81mmHg und einem pH von 7,18.
Ich sage allen Leuten immer „Das Beatmungsgerät hat keine Dyspnoe, das kommt zum Patienten, nicht der Patient zum Beatmungsgerät!“
Ich sage allen Leuten immer „Das Beatmungsgerät hat keine Dyspnoe, das kommt zum Patienten, nicht der Patient zum Beatmungsgerät!“
New maps on the Portal show monthly sea surface readings from 2018-22 in the Mid-Atlantic for four parameters are instrumental for determining #oceanacidification levels and events: pH, pCO2, H+, and aragonite saturation. 🌊🧪
ℹ️ portal.midatlanticocean.org/news/monthly...
ℹ️ portal.midatlanticocean.org/news/monthly...
December 18, 2025 at 4:52 PM
New maps on the Portal show monthly sea surface readings from 2018-22 in the Mid-Atlantic for four parameters are instrumental for determining #oceanacidification levels and events: pH, pCO2, H+, and aragonite saturation. 🌊🧪
ℹ️ portal.midatlanticocean.org/news/monthly...
ℹ️ portal.midatlanticocean.org/news/monthly...
Alizée Roobaert et al.* create a high resolution data product of coastal surface pCO₂.
doi.org/10.5194/essd...
#coast #ocean #co2
*Pierre Regnier, Peter Landschützer, Goulven G. Laruelle
doi.org/10.5194/essd...
#coast #ocean #co2
*Pierre Regnier, Peter Landschützer, Goulven G. Laruelle
December 17, 2025 at 8:32 AM
Alizée Roobaert et al.* create a high resolution data product of coastal surface pCO₂.
doi.org/10.5194/essd...
#coast #ocean #co2
*Pierre Regnier, Peter Landschützer, Goulven G. Laruelle
doi.org/10.5194/essd...
#coast #ocean #co2
*Pierre Regnier, Peter Landschützer, Goulven G. Laruelle
