Thale Damm-Johnsen
@thale.bsky.social
Postdoc with BIOCOD (CNRS/IPSL) modelling ocean palaeoproductivity across last deglaciations. Also passionate about the hidden wonders of snow petrel vomit (ANTSIE, Durham Uni)
Excellent review on the rapidly changing state of Antarctic environments, and what that means for the rest of the globe - a must read!
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Emerging evidence of abrupt changes in the Antarctic environment - Nature
Abrupt changes are developing across Antarctica’s ice, ocean and biological systems; some of these changes are intensifying faster than equivalent Arctic changes, potentially irreversibly, and their i...
www.nature.com
August 21, 2025 at 11:11 AM
Excellent review on the rapidly changing state of Antarctic environments, and what that means for the rest of the globe - a must read!
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Thale Damm-Johnsen
New today: Critical research published in @nature.com on the abrupt and alarming changes being observed in #Antarctica and the surrounding Southern Ocean, led by Prof. @climatenerilie.bsky.social, with @profmattengland.bsky.social and colleagues ⬇️
theconversation.com/from-sea-ice...
theconversation.com/from-sea-ice...
From sea ice to ocean currents, Antarctica is now undergoing abrupt changes – and we’ll all feel them
The vast ice of Antarctica has long seemed impregnable. But sudden changes are arriving – from shrinking sea ice to melting ice sheets and slowing ocean currents.
theconversation.com
August 21, 2025 at 3:19 AM
New today: Critical research published in @nature.com on the abrupt and alarming changes being observed in #Antarctica and the surrounding Southern Ocean, led by Prof. @climatenerilie.bsky.social, with @profmattengland.bsky.social and colleagues ⬇️
theconversation.com/from-sea-ice...
theconversation.com/from-sea-ice...
Reposted by Thale Damm-Johnsen
Why would anyone want to be a scientist? There are the pleasures of:
1. Having the initial idea or insight,
2. Watching the idea develop into new experiments or a new model, and
3. Telling others.
Martin A. Schwartz
Check out also his Night Science podcast episode: podcasts.apple.com/us/podcast/7...
1. Having the initial idea or insight,
2. Watching the idea develop into new experiments or a new model, and
3. Telling others.
Martin A. Schwartz
Check out also his Night Science podcast episode: podcasts.apple.com/us/podcast/7...
August 15, 2025 at 8:30 PM
Why would anyone want to be a scientist? There are the pleasures of:
1. Having the initial idea or insight,
2. Watching the idea develop into new experiments or a new model, and
3. Telling others.
Martin A. Schwartz
Check out also his Night Science podcast episode: podcasts.apple.com/us/podcast/7...
1. Having the initial idea or insight,
2. Watching the idea develop into new experiments or a new model, and
3. Telling others.
Martin A. Schwartz
Check out also his Night Science podcast episode: podcasts.apple.com/us/podcast/7...
Reposted by Thale Damm-Johnsen
We’ve collected the oldest ice core, now it’s time to analyse it! 🔍 💻
The @newscientist.com have a new icy-cool video, speaking to BAS scientists about the Beyond EPICA project, highlighting why this work is so important in the face of climate change.
www.newscientist.com/video/249042...
The @newscientist.com have a new icy-cool video, speaking to BAS scientists about the Beyond EPICA project, highlighting why this work is so important in the face of climate change.
www.newscientist.com/video/249042...
August 12, 2025 at 10:07 AM
We’ve collected the oldest ice core, now it’s time to analyse it! 🔍 💻
The @newscientist.com have a new icy-cool video, speaking to BAS scientists about the Beyond EPICA project, highlighting why this work is so important in the face of climate change.
www.newscientist.com/video/249042...
The @newscientist.com have a new icy-cool video, speaking to BAS scientists about the Beyond EPICA project, highlighting why this work is so important in the face of climate change.
www.newscientist.com/video/249042...
Reposted by Thale Damm-Johnsen
Excited to share our new paper in #AnimalBiotelemetry @springernature.com!
We classified killer whale tracks into five movement modes using movement metrics and absolute space use, revealing finer-scale behaviour and insights into how they use space along the Norwegian coast 🐋🛰️🧪 tinyurl.com/y8a3wdmy
We classified killer whale tracks into five movement modes using movement metrics and absolute space use, revealing finer-scale behaviour and insights into how they use space along the Norwegian coast 🐋🛰️🧪 tinyurl.com/y8a3wdmy
Characterizing movement patterns of killer whales along the Norwegian coast - Animal Biotelemetry
Background There has been ever-growing research fitting movement models to marine mammal satellite tracking data in recent years, yet little focus on methods attempting to go beyond individual restric...
tinyurl.com
August 9, 2025 at 2:10 PM
Excited to share our new paper in #AnimalBiotelemetry @springernature.com!
We classified killer whale tracks into five movement modes using movement metrics and absolute space use, revealing finer-scale behaviour and insights into how they use space along the Norwegian coast 🐋🛰️🧪 tinyurl.com/y8a3wdmy
We classified killer whale tracks into five movement modes using movement metrics and absolute space use, revealing finer-scale behaviour and insights into how they use space along the Norwegian coast 🐋🛰️🧪 tinyurl.com/y8a3wdmy
Reposted by Thale Damm-Johnsen
Now with correct link: doi.org/10.1038/s415...
August 6, 2025 at 1:53 PM
Now with correct link: doi.org/10.1038/s415...
Reposted by Thale Damm-Johnsen
Great work by our colleagues Stewart Jamieson and Guy Paxman: "We have been using satellite data to map an ancient river landscape beneath the East Antarctic Ice Sheet:. The landscape has been frozen in time for up to 34 million years." ⚒️🧪
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Extensive fluvial surfaces at the East Antarctic margin have modulated ice-sheet evolution - Nature Geoscience
Extensive flat surfaces observed beneath the East Antarctic Ice Sheet margin were formed by fluvial erosion and have modulated the ice-sheet response to climate change, according to an analysis of rad...
www.nature.com
July 11, 2025 at 10:57 AM
Great work by our colleagues Stewart Jamieson and Guy Paxman: "We have been using satellite data to map an ancient river landscape beneath the East Antarctic Ice Sheet:. The landscape has been frozen in time for up to 34 million years." ⚒️🧪
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Thale Damm-Johnsen
Stoked to share our Australian community’s voice on “impacts of #Antarctic #SeaIce extremes“ published in PNASNexus!
Massive kudos to Ed for spearheading this epic, super multidisciplinary work👏🥳 And so honoured to be a part of it.
doi.org/10.1093/pnas...
Massive kudos to Ed for spearheading this epic, super multidisciplinary work👏🥳 And so honoured to be a part of it.
doi.org/10.1093/pnas...
July 2, 2025 at 8:07 AM
Stoked to share our Australian community’s voice on “impacts of #Antarctic #SeaIce extremes“ published in PNASNexus!
Massive kudos to Ed for spearheading this epic, super multidisciplinary work👏🥳 And so honoured to be a part of it.
doi.org/10.1093/pnas...
Massive kudos to Ed for spearheading this epic, super multidisciplinary work👏🥳 And so honoured to be a part of it.
doi.org/10.1093/pnas...
Reposted by Thale Damm-Johnsen
We look forward to welcoming the @erc.europa.eu Scientific Council to Durham next week and showcasing amazing research, like Professor @erinmcclimate.bsky.social's study on Antarctic snow petrels and sea ice evolution. Read more: bit.ly/4nde2gE
@geogdurham.bsky.social @leverhulme.ac.uk @bas.ac.uk
@geogdurham.bsky.social @leverhulme.ac.uk @bas.ac.uk
June 18, 2025 at 3:08 PM
We look forward to welcoming the @erc.europa.eu Scientific Council to Durham next week and showcasing amazing research, like Professor @erinmcclimate.bsky.social's study on Antarctic snow petrels and sea ice evolution. Read more: bit.ly/4nde2gE
@geogdurham.bsky.social @leverhulme.ac.uk @bas.ac.uk
@geogdurham.bsky.social @leverhulme.ac.uk @bas.ac.uk
Reposted by Thale Damm-Johnsen
CONGRATULATIONS to our very own @mikebentley.bsky.social who has been awarded an OBE for his services to Antarctic Science! Mike has not only made an outstanding contribution to polar science, he is also a fantastic colleague and we are all delighted for him! ❄️🥳
www.durham.ac.uk/news-events/...
www.durham.ac.uk/news-events/...
June 16, 2025 at 3:36 PM
CONGRATULATIONS to our very own @mikebentley.bsky.social who has been awarded an OBE for his services to Antarctic Science! Mike has not only made an outstanding contribution to polar science, he is also a fantastic colleague and we are all delighted for him! ❄️🥳
www.durham.ac.uk/news-events/...
www.durham.ac.uk/news-events/...
Reposted by Thale Damm-Johnsen
🌊 Happy #WorldOceansDay from SCAR!
Today, we celebrate the mighty Southern Ocean—a climate hero that deserves the spotlight.
To mark the day, we’re sharing three stunning data visualisations from a past EG-ABI competition, showcasing the impacts of climate change on the Southern Ocean.
Today, we celebrate the mighty Southern Ocean—a climate hero that deserves the spotlight.
To mark the day, we’re sharing three stunning data visualisations from a past EG-ABI competition, showcasing the impacts of climate change on the Southern Ocean.
June 8, 2025 at 8:00 AM
🌊 Happy #WorldOceansDay from SCAR!
Today, we celebrate the mighty Southern Ocean—a climate hero that deserves the spotlight.
To mark the day, we’re sharing three stunning data visualisations from a past EG-ABI competition, showcasing the impacts of climate change on the Southern Ocean.
Today, we celebrate the mighty Southern Ocean—a climate hero that deserves the spotlight.
To mark the day, we’re sharing three stunning data visualisations from a past EG-ABI competition, showcasing the impacts of climate change on the Southern Ocean.
Reposted by Thale Damm-Johnsen
🚨 Carbon dioxide (CO₂) levels set a new monthly *record high* in May 2025 - 430.51 ppm (seasonal maximum)
This is the second largest May-May increase in this dataset (3.6 ppm higher than 2024). This is not good... 🫣
Data from gml.noaa.gov/ccgg/trends/
This is the second largest May-May increase in this dataset (3.6 ppm higher than 2024). This is not good... 🫣
Data from gml.noaa.gov/ccgg/trends/
June 7, 2025 at 1:57 PM
🚨 Carbon dioxide (CO₂) levels set a new monthly *record high* in May 2025 - 430.51 ppm (seasonal maximum)
This is the second largest May-May increase in this dataset (3.6 ppm higher than 2024). This is not good... 🫣
Data from gml.noaa.gov/ccgg/trends/
This is the second largest May-May increase in this dataset (3.6 ppm higher than 2024). This is not good... 🫣
Data from gml.noaa.gov/ccgg/trends/
Reposted by Thale Damm-Johnsen
What do sea-ice associated seabirds do during a season with little sea ice? Results from GPS tracking on snow petrels is now published, led by @elliehonan.bsky.social funded by @erc.europa.eu @leverhulme.ac.uk details here: www.antsie.webspace.durham.ac.uk/2025/06/06/snow-petrel-tracking/ 🧪🐙
www.antsie.webspace.durham.ac.uk
June 6, 2025 at 11:14 AM
What do sea-ice associated seabirds do during a season with little sea ice? Results from GPS tracking on snow petrels is now published, led by @elliehonan.bsky.social funded by @erc.europa.eu @leverhulme.ac.uk details here: www.antsie.webspace.durham.ac.uk/2025/06/06/snow-petrel-tracking/ 🧪🐙
Hot off the press! A new study on snow petrel tracking from coastal Droninng Maud Land, Antarctica, by the wonderful @elliehonan.bsky.social!
Read the paper here:
link.springer.com/article/10.1...
And a summary here(including an epic fieldwork video): antsie.webspace.durham.ac.uk/2025/06/06/s...
Read the paper here:
link.springer.com/article/10.1...
And a summary here(including an epic fieldwork video): antsie.webspace.durham.ac.uk/2025/06/06/s...
The foraging distribution and habitat use of chick-rearing snow petrels from two colonies in Dronning Maud Land, Antarctica - Marine Biology
The polar sea-ice zones are highly productive and seasonal habitats that support large populations of vertebrate predators. In the Antarctic, snow petrels (Pagodroma nivea) are regarded as highly ice-...
link.springer.com
June 6, 2025 at 1:03 PM
Hot off the press! A new study on snow petrel tracking from coastal Droninng Maud Land, Antarctica, by the wonderful @elliehonan.bsky.social!
Read the paper here:
link.springer.com/article/10.1...
And a summary here(including an epic fieldwork video): antsie.webspace.durham.ac.uk/2025/06/06/s...
Read the paper here:
link.springer.com/article/10.1...
And a summary here(including an epic fieldwork video): antsie.webspace.durham.ac.uk/2025/06/06/s...
Reposted by Thale Damm-Johnsen
This is horrible. I don't even know what to say. Some of our most key polar data.
"As a result, the level of services for affected products below will be reduced to Basic—meaning they will remain accessible but may not be actively maintained, updated, or fully supported."
nsidc.org/data/user-re...
"As a result, the level of services for affected products below will be reduced to Basic—meaning they will remain accessible but may not be actively maintained, updated, or fully supported."
nsidc.org/data/user-re...
May 6, 2025 at 8:08 PM
This is horrible. I don't even know what to say. Some of our most key polar data.
"As a result, the level of services for affected products below will be reduced to Basic—meaning they will remain accessible but may not be actively maintained, updated, or fully supported."
nsidc.org/data/user-re...
"As a result, the level of services for affected products below will be reduced to Basic—meaning they will remain accessible but may not be actively maintained, updated, or fully supported."
nsidc.org/data/user-re...
Reposted by Thale Damm-Johnsen
I took this image in Antarctica — a place of harsh beauty, sometimes colorful, and always deeper than expected. Share if you like it.
#Photography #Antarctica #Fieldwork
#PolarScience #GlacierLife #BlueIce #SciencePhotography
#VisualScience #IceStories #Earth #Expedition
#Photography #Antarctica #Fieldwork
#PolarScience #GlacierLife #BlueIce #SciencePhotography
#VisualScience #IceStories #Earth #Expedition
May 5, 2025 at 3:44 PM
I took this image in Antarctica — a place of harsh beauty, sometimes colorful, and always deeper than expected. Share if you like it.
#Photography #Antarctica #Fieldwork
#PolarScience #GlacierLife #BlueIce #SciencePhotography
#VisualScience #IceStories #Earth #Expedition
#Photography #Antarctica #Fieldwork
#PolarScience #GlacierLife #BlueIce #SciencePhotography
#VisualScience #IceStories #Earth #Expedition
Reposted by Thale Damm-Johnsen
Why is Antarctica so important?
Antarctica might feel very remote - until you look at the planet from a different perspective. It's actually central to our world's ocean currents.
🎁 Check the alt text to dig into this diagram
🌊 This is from a new book by BAS' @oceanandice.bsky.social (et al.)
Antarctica might feel very remote - until you look at the planet from a different perspective. It's actually central to our world's ocean currents.
🎁 Check the alt text to dig into this diagram
🌊 This is from a new book by BAS' @oceanandice.bsky.social (et al.)
April 22, 2025 at 12:57 PM
Why is Antarctica so important?
Antarctica might feel very remote - until you look at the planet from a different perspective. It's actually central to our world's ocean currents.
🎁 Check the alt text to dig into this diagram
🌊 This is from a new book by BAS' @oceanandice.bsky.social (et al.)
Antarctica might feel very remote - until you look at the planet from a different perspective. It's actually central to our world's ocean currents.
🎁 Check the alt text to dig into this diagram
🌊 This is from a new book by BAS' @oceanandice.bsky.social (et al.)
Reposted by Thale Damm-Johnsen
Throwback to spending 3 weeks sampling around Kevo, Finland as part of my 1st field season for SAFE which was very kindly funded by INTERACT TA and helped by the lovely @thale.bsky.social
Also learnt that 30’C was possible at 70N! 😱😱
Also learnt that 30’C was possible at 70N! 😱😱
March 18, 2025 at 1:39 PM
Throwback to spending 3 weeks sampling around Kevo, Finland as part of my 1st field season for SAFE which was very kindly funded by INTERACT TA and helped by the lovely @thale.bsky.social
Also learnt that 30’C was possible at 70N! 😱😱
Also learnt that 30’C was possible at 70N! 😱😱
Reposted by Thale Damm-Johnsen
🧪🌊 🧵 As the minimum in Antarctic sea-ice extent has now dipped below 2 million km² for the third year in a row, it is looking increasingly like this is the new normal. In the 10 years up to 2015 the minimum extent averaged more than 3 million km².
Graph from @nsidc.bsky.social
1/n
Graph from @nsidc.bsky.social
1/n
March 2, 2025 at 5:01 PM
🧪🌊 🧵 As the minimum in Antarctic sea-ice extent has now dipped below 2 million km² for the third year in a row, it is looking increasingly like this is the new normal. In the 10 years up to 2015 the minimum extent averaged more than 3 million km².
Graph from @nsidc.bsky.social
1/n
Graph from @nsidc.bsky.social
1/n
Reposted by Thale Damm-Johnsen
https://buff.ly/4gJqFeF
The Explorers Club recognizes SETI Institute Senior Research Scientist Dr. Dale Andersen with its Finn Ronne Memorial Award. Andersen has spent nearly five decades exploring Earth's most extreme environments.
The Explorers Club recognizes SETI Institute Senior Research Scientist Dr. Dale Andersen with its Finn Ronne Memorial Award. Andersen has spent nearly five decades exploring Earth's most extreme environments.
February 12, 2025 at 6:22 PM
https://buff.ly/4gJqFeF
The Explorers Club recognizes SETI Institute Senior Research Scientist Dr. Dale Andersen with its Finn Ronne Memorial Award. Andersen has spent nearly five decades exploring Earth's most extreme environments.
The Explorers Club recognizes SETI Institute Senior Research Scientist Dr. Dale Andersen with its Finn Ronne Memorial Award. Andersen has spent nearly five decades exploring Earth's most extreme environments.
Reposted by Thale Damm-Johnsen
Our new paper is out in Nature Geoscience! In an ice-sheet-wide 3-D inventory of crevasses in 2016 and 2021, we find that crevasses are growing in response to ice acceleration on short timescales. @durham-university.bsky.social @byrdpolar.bsky.social @leverhulme.bsky.social
Increased crevassing across accelerating Greenland Ice Sheet margins - Nature Geoscience
Greenland-wide observations of crevasse volume and distribution suggest substantial increases in crevassing between 2016 and 2021 at marine-terminating sectors with accelerating ice flow.
www.nature.com
February 3, 2025 at 10:37 AM
Our new paper is out in Nature Geoscience! In an ice-sheet-wide 3-D inventory of crevasses in 2016 and 2021, we find that crevasses are growing in response to ice acceleration on short timescales. @durham-university.bsky.social @byrdpolar.bsky.social @leverhulme.bsky.social
Reposted by Thale Damm-Johnsen
New paper out from our team!
Satellite observations of subglacial lakes are much needed for improving knowledge of subglacial meltwater dynamics and evolution, and for improving simulating these processes in models.
#glaciology #Antarctic #remotesensing #hydrology 🛰 💧
Satellite observations of subglacial lakes are much needed for improving knowledge of subglacial meltwater dynamics and evolution, and for improving simulating these processes in models.
#glaciology #Antarctic #remotesensing #hydrology 🛰 💧
*New evidence of active subglacial lakes under the East #Antarctic Ice Sheet!*
We use #ICESat2 to show lakes fill and drain beneath slow-moving ice. Modelling likely meltwater routes suggests lakes discharge meltwater under ice shelves.
tiny.cc/wsu7001 @npiglaciology.bsky.social
We use #ICESat2 to show lakes fill and drain beneath slow-moving ice. Modelling likely meltwater routes suggests lakes discharge meltwater under ice shelves.
tiny.cc/wsu7001 @npiglaciology.bsky.social
Evidence of active subglacial lakes under a slowly moving coastal region of the Antarctic Ice Sheet
Abstract. Active subglacial lakes beneath the Antarctic Ice Sheet provide insights into the dynamic subglacial environment, with implications for ice-sheet dynamics and mass balance. Most previously i...
tc.copernicus.org
January 28, 2025 at 8:50 AM
New paper out from our team!
Satellite observations of subglacial lakes are much needed for improving knowledge of subglacial meltwater dynamics and evolution, and for improving simulating these processes in models.
#glaciology #Antarctic #remotesensing #hydrology 🛰 💧
Satellite observations of subglacial lakes are much needed for improving knowledge of subglacial meltwater dynamics and evolution, and for improving simulating these processes in models.
#glaciology #Antarctic #remotesensing #hydrology 🛰 💧