Dr. Evan J. Gowan
@evangowan.bsky.social
I am a climate scientist, focused on paleoclimate, sea level change and the evolution of Quaternary glaciations.
I reconstruct ice sheets using glacial isostatic adjustment and ice sheet modelling. In Japan but have been all over the place. 🇨🇦🇯🇵🇦🇺🇩🇪🇸🇪
I reconstruct ice sheets using glacial isostatic adjustment and ice sheet modelling. In Japan but have been all over the place. 🇨🇦🇯🇵🇦🇺🇩🇪🇸🇪
Pinned
Hello Bluesky folks! I am interested in meeting people working on climate, sea level and ice sheets, especially with reference to the past. Please visit my website for a larger bio! raisedbeaches.net/about/
For those often making long threads: have you considered making a blog? Bluesky posts are too short, and it requires extra clicks if there are more than 10 posts in it. It is an irritating way to read.
People who post long threads: you might want to consider making it clear what the hell/who the hell you're talking about when you make a key point so if it's retweeted a coherent version of your message gets out.
November 11, 2025 at 12:17 AM
For those often making long threads: have you considered making a blog? Bluesky posts are too short, and it requires extra clicks if there are more than 10 posts in it. It is an irritating way to read.
Reposted by Dr. Evan J. Gowan
🚨New Paper: "History of the Barents Sea Ice Sheet, MIS 11 to present" - Cofield & Darby (2025)
Utilized ice rafted debris + Fe-grains from a deep-sea Arctic sediment core to reconstruct ice movement/ timing for Barents Sea Ice Sheet through MIS 11 (~440 ka).
*Proxy explanation in🧵
(1/n) 🌊🧪
Utilized ice rafted debris + Fe-grains from a deep-sea Arctic sediment core to reconstruct ice movement/ timing for Barents Sea Ice Sheet through MIS 11 (~440 ka).
*Proxy explanation in🧵
(1/n) 🌊🧪
History of the Barents Sea Ice Sheet, MIS 11 to present
Understanding the history of large Arctic ice sheets is important in knowing the possibilities for future climate change and its impact on existing ic…
www.sciencedirect.com
November 10, 2025 at 2:34 PM
🚨New Paper: "History of the Barents Sea Ice Sheet, MIS 11 to present" - Cofield & Darby (2025)
Utilized ice rafted debris + Fe-grains from a deep-sea Arctic sediment core to reconstruct ice movement/ timing for Barents Sea Ice Sheet through MIS 11 (~440 ka).
*Proxy explanation in🧵
(1/n) 🌊🧪
Utilized ice rafted debris + Fe-grains from a deep-sea Arctic sediment core to reconstruct ice movement/ timing for Barents Sea Ice Sheet through MIS 11 (~440 ka).
*Proxy explanation in🧵
(1/n) 🌊🧪
Reposted by Dr. Evan J. Gowan
!New #OpenAcess paper alert!
Late Pleistocene atmospheric dust dynamics reconstructed from sediment included in ice wedges from #Batagay and Central Yakutia:
www.nature.com/articles/s41...
Late Pleistocene atmospheric dust dynamics reconstructed from sediment included in ice wedges from #Batagay and Central Yakutia:
www.nature.com/articles/s41...
East Siberian ice wedges recording dust transport variability during the Late Pleistocene - Nature Communications
Dust preserved in Siberian ice wedges reveals shifts in wind patterns during the last glacial stage. Long-range dust transport from China to the Arctic operated under similar mechanisms as today but w...
www.nature.com
November 10, 2025 at 1:07 PM
!New #OpenAcess paper alert!
Late Pleistocene atmospheric dust dynamics reconstructed from sediment included in ice wedges from #Batagay and Central Yakutia:
www.nature.com/articles/s41...
Late Pleistocene atmospheric dust dynamics reconstructed from sediment included in ice wedges from #Batagay and Central Yakutia:
www.nature.com/articles/s41...
Reposted by Dr. Evan J. Gowan
Finally out! The outcome of a virtual workshop in Feb 2024 with modelers and observationalists to put together data and protocols to include historical changes in ice sheet/ice shelf discharge in CMIP models. Hopefully not too late for some CMIP7 runs!
gmd.copernicus.org/articles/18/...
gmd.copernicus.org/articles/18/...
Datasets and protocols for including anomalous freshwater from melting ice sheets in climate simulations
Abstract. Anomalous freshwater fluxes from the Greenland and Antarctic ice sheets and ice shelves are impacting the surrounding oceans, and we need to be able to account for these effects in climate m...
gmd.copernicus.org
November 7, 2025 at 9:31 PM
Finally out! The outcome of a virtual workshop in Feb 2024 with modelers and observationalists to put together data and protocols to include historical changes in ice sheet/ice shelf discharge in CMIP models. Hopefully not too late for some CMIP7 runs!
gmd.copernicus.org/articles/18/...
gmd.copernicus.org/articles/18/...
Reposted by Dr. Evan J. Gowan
I think that this @natgeosci.nature.com paper—now published in the November issue of this journal—is worth checking out:
doi.org/10.1038/s415...
🧪 ⚒️ 🦣 🌊
#PaleoSky
doi.org/10.1038/s415...
🧪 ⚒️ 🦣 🌊
#PaleoSky
Earth system response to Heinrich events explained by a bipolar convection seesaw - Nature Geoscience
The onset of Southern Ocean convection following a slowing of the Atlantic Meridional Overturning Circulation during Heinrich events can help explain rapid CO2 increases and Antarctic warming during t...
doi.org
November 10, 2025 at 10:36 AM
I think that this @natgeosci.nature.com paper—now published in the November issue of this journal—is worth checking out:
doi.org/10.1038/s415...
🧪 ⚒️ 🦣 🌊
#PaleoSky
doi.org/10.1038/s415...
🧪 ⚒️ 🦣 🌊
#PaleoSky
Reposted by Dr. Evan J. Gowan
We are recruiting! (x2)
There are two permanent positions available in our climate dynamics and prediction group, so if either sounds interesting to you do apply, or share with your colleagues:
www.jobbnorge.no/en/available...
www.jobbnorge.no/en/available...
There are two permanent positions available in our climate dynamics and prediction group, so if either sounds interesting to you do apply, or share with your colleagues:
www.jobbnorge.no/en/available...
www.jobbnorge.no/en/available...
Permanent position as researcher in Climate Prediction (289560) | Nansen Environmental and Remote Sensing Center
Job title: Permanent position as researcher in Climate Prediction (289560), Employer: Nansen Environmental and Remote Sensing Center, Deadline: Sunday, December 7, 2025
www.jobbnorge.no
November 10, 2025 at 7:45 AM
We are recruiting! (x2)
There are two permanent positions available in our climate dynamics and prediction group, so if either sounds interesting to you do apply, or share with your colleagues:
www.jobbnorge.no/en/available...
www.jobbnorge.no/en/available...
There are two permanent positions available in our climate dynamics and prediction group, so if either sounds interesting to you do apply, or share with your colleagues:
www.jobbnorge.no/en/available...
www.jobbnorge.no/en/available...
Andrews et al investigate the sediment sources for Heinrich Events. They conclude most of the carbonate is derived directly from the Hudson Strait, and it is not from further sources in the Foxe Basin and Hudson Bay. The amount of ice margin retreat may have been limited. doi.org/10.1002/jqs....
The mineral and isotopic signatures of glacially eroded sediments exported from Hudson Strait to the Labrador Sea during Hudson Strait Heinrich events H0 to H4
The sediment signature of glacial erosion products exported from Hudson Strait to the Labrador Sea during Hudson Strait Heinrich (HS-H) events is evaluated using four distinct proxies: paired δ18Ο an....
doi.org
November 10, 2025 at 6:42 AM
Andrews et al investigate the sediment sources for Heinrich Events. They conclude most of the carbonate is derived directly from the Hudson Strait, and it is not from further sources in the Foxe Basin and Hudson Bay. The amount of ice margin retreat may have been limited. doi.org/10.1002/jqs....
Cofield and Darby analyze a core located NW of Svalbard for ice rafted debris. They make the surprising finding that the Barents Sea Ice Sheet may not have formed during the MIS 10 and 8 glacial periods, and that if the Arctic ice shelf existed, it may have been early MIS 6. doi.org/10.1016/j.qu...
Redirecting
doi.org
November 10, 2025 at 6:14 AM
Cofield and Darby analyze a core located NW of Svalbard for ice rafted debris. They make the surprising finding that the Barents Sea Ice Sheet may not have formed during the MIS 10 and 8 glacial periods, and that if the Arctic ice shelf existed, it may have been early MIS 6. doi.org/10.1016/j.qu...
Suganuma et al provide a thorough examination of the Holocene collapse of the Lützow-Holm Bay ice shelf in Antarctica. They pinpoint when the collapse happened by investigating the beryllium isotopes. When the bay became open ocean, cosmogenic ¹⁰Be could reach the sediments. doi.org/10.1038/s415...
Antarctic ice-shelf collapse in Holocene driven by meltwater release feedbacks - Nature Geoscience
Early Holocene retreat of an ice shelf in East Antarctica was linked to ocean-driven forcing enhanced by ice-sheet meltwater from adjoining regions, as unveiled through the integration of proxy record...
doi.org
November 10, 2025 at 5:14 AM
Suganuma et al provide a thorough examination of the Holocene collapse of the Lützow-Holm Bay ice shelf in Antarctica. They pinpoint when the collapse happened by investigating the beryllium isotopes. When the bay became open ocean, cosmogenic ¹⁰Be could reach the sediments. doi.org/10.1038/s415...
Reposted by Dr. Evan J. Gowan
Unfortunately, in many courses in geosciences worldwide, university-level mathematics and computational geosciences is not included, as my experience from processing this year’s masters applications suggests.
mres.uni-potsdam.de/2025/11/07/h...
mres.uni-potsdam.de/2025/11/07/h...
November 8, 2025 at 9:56 AM
Unfortunately, in many courses in geosciences worldwide, university-level mathematics and computational geosciences is not included, as my experience from processing this year’s masters applications suggests.
mres.uni-potsdam.de/2025/11/07/h...
mres.uni-potsdam.de/2025/11/07/h...
It is pretty interesting to read some of the commentary on future sea level rise from the 1950s. This was from a symposium held in the Netherlands in 1954, before many of the aspects of climate change were fully understood, including Milankovich theory and CO₂ changes. #ClimateChange #SeaLevelChange
November 8, 2025 at 10:11 AM
It is pretty interesting to read some of the commentary on future sea level rise from the 1950s. This was from a symposium held in the Netherlands in 1954, before many of the aspects of climate change were fully understood, including Milankovich theory and CO₂ changes. #ClimateChange #SeaLevelChange
Reposted by Dr. Evan J. Gowan
happy anniversary of Stupid Lake getting its name [citation needed]
November 8, 2025 at 1:13 AM
happy anniversary of Stupid Lake getting its name [citation needed]
Reposted by Dr. Evan J. Gowan
Cool use of a clumped isotopologue in wood! - Isotopic evidence for elevated photorespiration during the last glacial period www.nature.com/articles/s41...
Isotopic evidence for elevated photorespiration during the last glacial period - Nature Geoscience
Low carbon dioxide levels during the last glacial period enhanced photorespiration in trees across North America, indicating a decline in land plant productivity, according to measurements of clumped ...
www.nature.com
November 6, 2025 at 6:01 PM
Cool use of a clumped isotopologue in wood! - Isotopic evidence for elevated photorespiration during the last glacial period www.nature.com/articles/s41...
Reposted by Dr. Evan J. Gowan
Huge paper for the Arctic Ocean published today in @science.org - a new 30,000 year history of Arctic Ocean sea-ice cover reconstructed from the accumulation of cosmic dust-derived helium-3! www.science.org/doi/10.1126/... (1/n)
Cosmic dust reveals dynamic shifts in central Arctic sea-ice coverage over the past 30,000 years
Arctic sea-ice loss affects biological productivity, sustenance in coastal communities, and geopolitics. Forecasting these impacts requires mechanistic understanding of how Arctic sea ice responds to ...
www.science.org
November 7, 2025 at 1:08 AM
Huge paper for the Arctic Ocean published today in @science.org - a new 30,000 year history of Arctic Ocean sea-ice cover reconstructed from the accumulation of cosmic dust-derived helium-3! www.science.org/doi/10.1126/... (1/n)
Reposted by Dr. Evan J. Gowan
My co-authored marine GDGT « cookbook » review paper led by Peter Bijl 👨🔬 and @kasiasliwinska.bsky.social 👩🔬 is now published in @egubg.bsky.social!
doi.org/10.5194/bg-2...
Again, I am so happy to be the @cerege.bsky.social @climatecerege.bsky.social expert on #GDGTs!
@egu.eu
🧪 ⚒️ 🌊
#PaleoSky
(1/3)
doi.org/10.5194/bg-2...
Again, I am so happy to be the @cerege.bsky.social @climatecerege.bsky.social expert on #GDGTs!
@egu.eu
🧪 ⚒️ 🌊
#PaleoSky
(1/3)
November 6, 2025 at 9:26 PM
My co-authored marine GDGT « cookbook » review paper led by Peter Bijl 👨🔬 and @kasiasliwinska.bsky.social 👩🔬 is now published in @egubg.bsky.social!
doi.org/10.5194/bg-2...
Again, I am so happy to be the @cerege.bsky.social @climatecerege.bsky.social expert on #GDGTs!
@egu.eu
🧪 ⚒️ 🌊
#PaleoSky
(1/3)
doi.org/10.5194/bg-2...
Again, I am so happy to be the @cerege.bsky.social @climatecerege.bsky.social expert on #GDGTs!
@egu.eu
🧪 ⚒️ 🌊
#PaleoSky
(1/3)
Reposted by Dr. Evan J. Gowan
Together as One
Ningiukulu Teevee ~ Inuk
2025
Ningiukulu Teevee ~ Inuk
2025
November 2, 2025 at 10:00 AM
Together as One
Ningiukulu Teevee ~ Inuk
2025
Ningiukulu Teevee ~ Inuk
2025
Reposted by Dr. Evan J. Gowan
🔥🔥🔥Canada with their warmest October on record. Departure from 1991-2020 normal is +3.7C.🔥🔥🔥
November 5, 2025 at 2:34 AM
🔥🔥🔥Canada with their warmest October on record. Departure from 1991-2020 normal is +3.7C.🔥🔥🔥
Reposted by Dr. Evan J. Gowan
My @cerege.bsky.social @climatecerege.bsky.social colleague @jysuarezibarra.bsky.social has a new co-authored paper led by Camila Lopes! 👇🏻
www.sciencedirect.com/science/arti...
Congrats!
🧪 ⚒️ 👩🔬
#PaleoSky
www.sciencedirect.com/science/arti...
Congrats!
🧪 ⚒️ 👩🔬
#PaleoSky
November 4, 2025 at 10:06 AM
My @cerege.bsky.social @climatecerege.bsky.social colleague @jysuarezibarra.bsky.social has a new co-authored paper led by Camila Lopes! 👇🏻
www.sciencedirect.com/science/arti...
Congrats!
🧪 ⚒️ 👩🔬
#PaleoSky
www.sciencedirect.com/science/arti...
Congrats!
🧪 ⚒️ 👩🔬
#PaleoSky
Reposted by Dr. Evan J. Gowan
New study in Nature by Lin et al shows how the sea-level rise from the melting Ice Age ice (a total of 120 meters rise) ended thousands of years ago.
Until our fossil fuel use started a new phase of rising seas.
Graph shows the global mean rate of sea level rise.
🌊
www.nature.com/articles/s41...
Until our fossil fuel use started a new phase of rising seas.
Graph shows the global mean rate of sea level rise.
🌊
www.nature.com/articles/s41...
November 3, 2025 at 12:09 PM
New study in Nature by Lin et al shows how the sea-level rise from the melting Ice Age ice (a total of 120 meters rise) ended thousands of years ago.
Until our fossil fuel use started a new phase of rising seas.
Graph shows the global mean rate of sea level rise.
🌊
www.nature.com/articles/s41...
Until our fossil fuel use started a new phase of rising seas.
Graph shows the global mean rate of sea level rise.
🌊
www.nature.com/articles/s41...
Reposted by Dr. Evan J. Gowan
📢 PhD opportunity at Newcastle University!
👉"Reconstructing past ice-sheet retreat and ice-ocean interactions from marine sediment cores".
This project will use new marine sediment cores to constrain the timing and drivers of past ice-sheet retreat.
More details: iapetus.ac.uk/studentships...
👉"Reconstructing past ice-sheet retreat and ice-ocean interactions from marine sediment cores".
This project will use new marine sediment cores to constrain the timing and drivers of past ice-sheet retreat.
More details: iapetus.ac.uk/studentships...
November 3, 2025 at 1:58 PM
📢 PhD opportunity at Newcastle University!
👉"Reconstructing past ice-sheet retreat and ice-ocean interactions from marine sediment cores".
This project will use new marine sediment cores to constrain the timing and drivers of past ice-sheet retreat.
More details: iapetus.ac.uk/studentships...
👉"Reconstructing past ice-sheet retreat and ice-ocean interactions from marine sediment cores".
This project will use new marine sediment cores to constrain the timing and drivers of past ice-sheet retreat.
More details: iapetus.ac.uk/studentships...
Reposted by Dr. Evan J. Gowan
It’s early November and no I will not be providing context.
November 3, 2025 at 12:43 AM
It’s early November and no I will not be providing context.
No win for the Jays, but that was a toss up of a series. Next year. Time for hockey. Go Jets Go!
November 2, 2025 at 5:22 AM
No win for the Jays, but that was a toss up of a series. Next year. Time for hockey. Go Jets Go!
Beer at the beach! The beach is not just for scientific study. 🍻
November 1, 2025 at 7:41 AM
Beer at the beach! The beach is not just for scientific study. 🍻
I made it to Okinawa.
October 31, 2025 at 6:37 AM
I made it to Okinawa.