Jay T. Cullen
@jaytcullen.bsky.social
Chemical Oceanographer. Professor and Director @seos-uvic.bsky.social
Interested in aviation, the ocean, climate science, space and music…
Interested in aviation, the ocean, climate science, space and music…
Reposted by Jay T. Cullen
1/🚢 Ruchie and Bradley have safely arrived at the Spanish Antarctic base, Juan Carlos I Base on Livingston Island, #Antarctica, with our partner, @csiccat.bsky.social sky.social!
🧪 🌊 #KnowTheOcean #CDNsci #OceanScience #PolarScience @uvic.ca
🧪 🌊 #KnowTheOcean #CDNsci #OceanScience #PolarScience @uvic.ca
January 20, 2026 at 7:50 PM
1/🚢 Ruchie and Bradley have safely arrived at the Spanish Antarctic base, Juan Carlos I Base on Livingston Island, #Antarctica, with our partner, @csiccat.bsky.social sky.social!
🧪 🌊 #KnowTheOcean #CDNsci #OceanScience #PolarScience @uvic.ca
🧪 🌊 #KnowTheOcean #CDNsci #OceanScience #PolarScience @uvic.ca
Trivia calendar not really playing hardball this morning…
January 20, 2026 at 2:36 PM
Trivia calendar not really playing hardball this morning…
Reposted by Jay T. Cullen
🌊 Traveling today to rejoin the icebreaker CCGS Amundsen in Quebec. I last left the ship at the Pituffik Space Base after working along the Greenland 🇬🇱 coast last summer
June 18, 2025 at 3:15 PM
🌊 Traveling today to rejoin the icebreaker CCGS Amundsen in Quebec. I last left the ship at the Pituffik Space Base after working along the Greenland 🇬🇱 coast last summer
Reposted by Jay T. Cullen
Why is oil-covered debris washing up on Florida’s beaches when there’s no spill in sight? A new WHOI study found that the tar-stained trash likely traveled about 5,300 miles after a massive oil spill off the coast of Brazil.
👣 Follow the oily trail: go.whoi.edu/tn-oil
👣 Follow the oily trail: go.whoi.edu/tn-oil
January 17, 2026 at 7:59 PM
Why is oil-covered debris washing up on Florida’s beaches when there’s no spill in sight? A new WHOI study found that the tar-stained trash likely traveled about 5,300 miles after a massive oil spill off the coast of Brazil.
👣 Follow the oily trail: go.whoi.edu/tn-oil
👣 Follow the oily trail: go.whoi.edu/tn-oil
Do you know about The Whiskey 🥃 War (1973-2022) “fought” between Canada 🇨🇦 and Denmark 🇩🇰 Greenland 🇬🇱? Hans Island was the centre of the dispute 😀 en.wikipedia.org/wiki/Whisky_...
January 17, 2026 at 6:04 PM
Do you know about The Whiskey 🥃 War (1973-2022) “fought” between Canada 🇨🇦 and Denmark 🇩🇰 Greenland 🇬🇱? Hans Island was the centre of the dispute 😀 en.wikipedia.org/wiki/Whisky_...
Reposted by Jay T. Cullen
1/🚢 ONC’s intrepid duo, Bradley + Ruchie transited through the Tierra del Fuego archipelago yesterday & caught some amazing sights aboard the BIO Hespérides with our partner, @csiccat.bsky.social.
@uvic.ca @csic.es
🧪 🌊 #KnowTheOcean #CDNsci #OceanScience #PolarScience
@uvic.ca @csic.es
🧪 🌊 #KnowTheOcean #CDNsci #OceanScience #PolarScience
January 15, 2026 at 5:32 PM
1/🚢 ONC’s intrepid duo, Bradley + Ruchie transited through the Tierra del Fuego archipelago yesterday & caught some amazing sights aboard the BIO Hespérides with our partner, @csiccat.bsky.social.
@uvic.ca @csic.es
🧪 🌊 #KnowTheOcean #CDNsci #OceanScience #PolarScience
@uvic.ca @csic.es
🧪 🌊 #KnowTheOcean #CDNsci #OceanScience #PolarScience
Joint Sweden 🇸🇪-Canada 🇨🇦 Arctic expedition opportunity for ECR and graduate students in ocean science to join the icebreakers Oden and Louis St. Laurent for an expedition this year 🌊 Support is available to applicants from MEOPAR www.polar.se/en/open-call...
Open calls
Open calls from the Swedish Polar Research Secretariat are listed here.
www.polar.se
January 15, 2026 at 5:42 PM
Joint Sweden 🇸🇪-Canada 🇨🇦 Arctic expedition opportunity for ECR and graduate students in ocean science to join the icebreakers Oden and Louis St. Laurent for an expedition this year 🌊 Support is available to applicants from MEOPAR www.polar.se/en/open-call...
“The fjord was named after the Reverend Dr. Newman of Washington, D.C. in September 1871 during the Polaris expedition by Charles Francis Hall. It would be the last place Hall named in Greenland 🇬🇱 , for he was taken ill shortly thereafter and died in November the same year.” - Wikipedia
January 15, 2026 at 4:47 PM
“The fjord was named after the Reverend Dr. Newman of Washington, D.C. in September 1871 during the Polaris expedition by Charles Francis Hall. It would be the last place Hall named in Greenland 🇬🇱 , for he was taken ill shortly thereafter and died in November the same year.” - Wikipedia
This is the extreme northwest corner of Greenland 🇬🇱. Newman Bugt does not disappoint. 🌊
January 15, 2026 at 4:43 PM
This is the extreme northwest corner of Greenland 🇬🇱. Newman Bugt does not disappoint. 🌊
Leaving Newman Bugt Greenland 🇬🇱 into Robeson Channel near the Lincoln Sea in August 2024. Learn more about our neighbours in Greenland. More on Newman Bay/Fjord/Bugt here en.wikipedia.org/wiki/Newman_... 🌊
January 15, 2026 at 4:34 PM
Leaving Newman Bugt Greenland 🇬🇱 into Robeson Channel near the Lincoln Sea in August 2024. Learn more about our neighbours in Greenland. More on Newman Bay/Fjord/Bugt here en.wikipedia.org/wiki/Newman_... 🌊
Reposted by Jay T. Cullen
Our new paper on earthquake records in the Cascadia Subduction Zone is out today!
The goal of our work is to reduce uncertainty in the timing and frequency of large earthquakes by investigating how and where subduction earthquake-triggered deposits are formed. 🧪⚒️🌊
www.science.org/doi/10.1126/...
The goal of our work is to reduce uncertainty in the timing and frequency of large earthquakes by investigating how and where subduction earthquake-triggered deposits are formed. 🧪⚒️🌊
www.science.org/doi/10.1126/...
Widespread abyssal turbidites record megathrust earthquake-triggered landslides and coseismic deformation in the Cascadia subduction zone
Lower slope failures produce abyssal turbidites that record shaking and coseismic deformation during megathrust earthquakes.
www.science.org
January 14, 2026 at 9:31 PM
Our new paper on earthquake records in the Cascadia Subduction Zone is out today!
The goal of our work is to reduce uncertainty in the timing and frequency of large earthquakes by investigating how and where subduction earthquake-triggered deposits are formed. 🧪⚒️🌊
www.science.org/doi/10.1126/...
The goal of our work is to reduce uncertainty in the timing and frequency of large earthquakes by investigating how and where subduction earthquake-triggered deposits are formed. 🧪⚒️🌊
www.science.org/doi/10.1126/...
My colleagues @ubcoceans.bsky.social including Dr. Roger Francois are using carbon isotope measurements to distinguish between organic matter and microplastics in the ocean. Perhaps this would be a useful analytical approach for medical research 🌊 www.theguardian.com/environment/...
‘A bombshell’: doubt cast on discovery of microplastics throughout human body
Exclusive: Some scientists say many detections are most likely error, with one high-profile study called a ‘joke’
www.theguardian.com
January 14, 2026 at 2:55 PM
My colleagues @ubcoceans.bsky.social including Dr. Roger Francois are using carbon isotope measurements to distinguish between organic matter and microplastics in the ocean. Perhaps this would be a useful analytical approach for medical research 🌊 www.theguardian.com/environment/...
There are robots working around the clock to better understand how the ocean breathes
🌊 Plot of the Week! 🌊
In the NW Med, 7 active Argo floats captured the winter mixing in one of the few regions of the world where deep convection is observed.
These processes are crucial for climate regulation and are experiencing major shifts.
#OneArgo #Argofloat #Argofloats #Argo
In the NW Med, 7 active Argo floats captured the winter mixing in one of the few regions of the world where deep convection is observed.
These processes are crucial for climate regulation and are experiencing major shifts.
#OneArgo #Argofloat #Argofloats #Argo
January 13, 2026 at 2:46 PM
There are robots working around the clock to better understand how the ocean breathes
Reposted by Jay T. Cullen
🌊 Plot of the Week! 🌊
In the NW Med, 7 active Argo floats captured the winter mixing in one of the few regions of the world where deep convection is observed.
These processes are crucial for climate regulation and are experiencing major shifts.
#OneArgo #Argofloat #Argofloats #Argo
In the NW Med, 7 active Argo floats captured the winter mixing in one of the few regions of the world where deep convection is observed.
These processes are crucial for climate regulation and are experiencing major shifts.
#OneArgo #Argofloat #Argofloats #Argo
January 13, 2026 at 2:45 PM
🌊 Plot of the Week! 🌊
In the NW Med, 7 active Argo floats captured the winter mixing in one of the few regions of the world where deep convection is observed.
These processes are crucial for climate regulation and are experiencing major shifts.
#OneArgo #Argofloat #Argofloats #Argo
In the NW Med, 7 active Argo floats captured the winter mixing in one of the few regions of the world where deep convection is observed.
These processes are crucial for climate regulation and are experiencing major shifts.
#OneArgo #Argofloat #Argofloats #Argo
Reposted by Jay T. Cullen
Remotely operated kayaks let researchers from @marine.rutgers.edu + colleagues gather rare data from the base of a melting glacier.
The results, in @jgroceans.bsky.social, offered unexpected insights about how seawater and freshwater mix near marine-terminating glaciers. eos.org/research-spo...
The results, in @jgroceans.bsky.social, offered unexpected insights about how seawater and freshwater mix near marine-terminating glaciers. eos.org/research-spo...
Melting Glaciers Mix Up Waters More Than We Thought - Eos
Existing theory underestimates the mixing of freshwater and seawater by up to 50%.
eos.org
January 13, 2026 at 2:24 PM
Remotely operated kayaks let researchers from @marine.rutgers.edu + colleagues gather rare data from the base of a melting glacier.
The results, in @jgroceans.bsky.social, offered unexpected insights about how seawater and freshwater mix near marine-terminating glaciers. eos.org/research-spo...
The results, in @jgroceans.bsky.social, offered unexpected insights about how seawater and freshwater mix near marine-terminating glaciers. eos.org/research-spo...
Reposted by Jay T. Cullen
Remarkable and not in a good way.
In a newly published paper, we find that in 2025 human emissions of greenhouse gases added around 23 billion trillion joules of heat to the world's oceans – 39 times as much as the annual energy produced by all human activity on Earth. link.springer.com/ar...
January 13, 2026 at 2:08 AM
Remarkable and not in a good way.
Reposted by Jay T. Cullen
Nice article! 🧪🌊🦑 #Sikuliaq #Oceangraphy #Arctic
Training Leaders for Seagoing Polar Oceanography
tos.org/oceanography...
Training Leaders for Seagoing Polar Oceanography
tos.org/oceanography...
January 12, 2026 at 7:13 PM
Nice article! 🧪🌊🦑 #Sikuliaq #Oceangraphy #Arctic
Training Leaders for Seagoing Polar Oceanography
tos.org/oceanography...
Training Leaders for Seagoing Polar Oceanography
tos.org/oceanography...
Reposted by Jay T. Cullen
1/🚢Last week, ONC’s Ruchie and Bradley set off for Punta Arenas, Chile—kicking off their journey south to Antarctica!
🌊 #KnowTheOcean #CDNsci #OceanScience #PolarScience
@csiccat.bsky.social @csic.es @uvic.ca
🌊 #KnowTheOcean #CDNsci #OceanScience #PolarScience
@csiccat.bsky.social @csic.es @uvic.ca
January 13, 2026 at 12:02 AM
1/🚢Last week, ONC’s Ruchie and Bradley set off for Punta Arenas, Chile—kicking off their journey south to Antarctica!
🌊 #KnowTheOcean #CDNsci #OceanScience #PolarScience
@csiccat.bsky.social @csic.es @uvic.ca
🌊 #KnowTheOcean #CDNsci #OceanScience #PolarScience
@csiccat.bsky.social @csic.es @uvic.ca
Who introduced you or invited you to @bsky.app? I’m pretty sure @altagliabue.bsky.social invited me
January 11, 2026 at 6:44 PM
Who introduced you or invited you to @bsky.app? I’m pretty sure @altagliabue.bsky.social invited me
zetajoules… 🥵
Published today in "Ocean Heat Content Sets Another Record in 2025", by Pan et al.
Link: link.springer.com/article/10.1...
Link: link.springer.com/article/10.1...
January 10, 2026 at 3:00 AM
zetajoules… 🥵
Are you a high school student in the USA 🇺🇲 and are interested in studying in Canada 🇨🇦. @uvic.ca is holding "USA Preview Days" to orient you and your family about how to make it happen and the fantastic opportunities open you at UVic. www.uvic.ca/undergraduat... 🧪🌊⛏️
USA Preview Days - Admissions - University of Victoria
Learn about USA Preview Days on-campus events where you can see what UVic has to offer and connect with other future UVic students coming from the US.
www.uvic.ca
January 8, 2026 at 6:20 PM
Are you a high school student in the USA 🇺🇲 and are interested in studying in Canada 🇨🇦. @uvic.ca is holding "USA Preview Days" to orient you and your family about how to make it happen and the fantastic opportunities open you at UVic. www.uvic.ca/undergraduat... 🧪🌊⛏️
Toured the new offshore research vessel CCGS Naalak Nappaaluk today at the base in Victoria. Impressive research vessel and investment by the Canadian government to meet our responsibilities w/r/t protecting our marine resources
January 8, 2026 at 2:43 AM
Toured the new offshore research vessel CCGS Naalak Nappaaluk today at the base in Victoria. Impressive research vessel and investment by the Canadian government to meet our responsibilities w/r/t protecting our marine resources
Greenland 🇬🇱 is autonomous territory in the Kingdom of Denmark 🇩🇰. Friendly neighbours and allies and an incredibly beautiful part of our world
January 6, 2026 at 9:55 PM
Greenland 🇬🇱 is autonomous territory in the Kingdom of Denmark 🇩🇰. Friendly neighbours and allies and an incredibly beautiful part of our world
Reposted by Jay T. Cullen
🌊 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