Alex Robel
@iceclimate.bsky.social
Ice sheets, climate, math, coasts, community resilience. Associate Professor
Georgia Tech EAS. Miami born 🇧🇴-🇦🇷-🇺🇸 he/him
Georgia Tech EAS. Miami born 🇧🇴-🇦🇷-🇺🇸 he/him
Pinned
Alex Robel
@iceclimate.bsky.social
· Sep 8
Opportunities – GT Ice & Climate Group
iceclimate.eas.gatech.edu
🚨🚨 We are recruiting a PhD student to start in Fall 2026 on the NeuCIM Project funded by @heisingsimonsfdn.bsky.social. Please send this opportunity to any candidates with interests related to ice sheet modeling, projections and/or machine learning iceclimate.eas.gatech.edu/opportunities/
“We have observational evidence and ocean modeling results to document that kilometer-scale seawater intrusions beneath grounded ice generate a high melt in the [grounding zone of Thwaites Glacier].”
www.pnas.org/doi/full/10....
www.pnas.org/doi/full/10....
Contrasting melt regime in the Ice Grounding Zone of Thwaites Glacier, West Antarctica | PNAS
The contribution of Thwaites Glacier, Antarctica, to sea level rise is influenced
by how quickly warm salty seawater of Circumpolar Deep Water orig...
www.pnas.org
November 24, 2025 at 3:33 PM
“We have observational evidence and ocean modeling results to document that kilometer-scale seawater intrusions beneath grounded ice generate a high melt in the [grounding zone of Thwaites Glacier].”
www.pnas.org/doi/full/10....
www.pnas.org/doi/full/10....
Reposted by Alex Robel
👋 Meet Assistant Professor @asarhadi.bsky.social.
Sarhadi's research focuses on a growing threat: hurricanes fueled by a warming climate. He uses physics-based computational modeling to understand and mitigate hurricane risk in the age of climate change. Learn more⤵️
Sarhadi's research focuses on a growing threat: hurricanes fueled by a warming climate. He uses physics-based computational modeling to understand and mitigate hurricane risk in the age of climate change. Learn more⤵️
Community Spotlight - Ali Sarhadi
cos.gatech.edu
November 20, 2025 at 4:48 PM
👋 Meet Assistant Professor @asarhadi.bsky.social.
Sarhadi's research focuses on a growing threat: hurricanes fueled by a warming climate. He uses physics-based computational modeling to understand and mitigate hurricane risk in the age of climate change. Learn more⤵️
Sarhadi's research focuses on a growing threat: hurricanes fueled by a warming climate. He uses physics-based computational modeling to understand and mitigate hurricane risk in the age of climate change. Learn more⤵️
“…submesoscales account for one-fifth of the total submarine melt variance in the area and highlight a positive feedback loop between submesoscale motions and submarine melting.”
doi.org/10.1038/s415...
doi.org/10.1038/s415...
Ocean submesoscales as drivers of submarine melting within Antarctic ice cavities - Nature Geoscience
Submesoscale ocean features deliver heat beneath Thwaites Ice Shelf and contribute to submarine melting, according to numerical modelling combined with available observations.
doi.org
November 20, 2025 at 1:10 PM
“…submesoscales account for one-fifth of the total submarine melt variance in the area and highlight a positive feedback loop between submesoscale motions and submarine melting.”
doi.org/10.1038/s415...
doi.org/10.1038/s415...
Reposted by Alex Robel
The #ISMIP7 ice-ocean Antarctic focus group is recruiting a 2.5 year postdoc on ice-shelf basal melting at Northumbria University, Newcastle, UK. A great way to develop international collaborations and contribute to the improvement of sea level projections!
work4.northumbria.ac.uk#en/sites/CX_...
work4.northumbria.ac.uk#en/sites/CX_...
work4.northumbria.ac.uk
November 18, 2025 at 10:22 PM
The #ISMIP7 ice-ocean Antarctic focus group is recruiting a 2.5 year postdoc on ice-shelf basal melting at Northumbria University, Newcastle, UK. A great way to develop international collaborations and contribute to the improvement of sea level projections!
work4.northumbria.ac.uk#en/sites/CX_...
work4.northumbria.ac.uk#en/sites/CX_...
Reposted by Alex Robel
New paper alert ! 🙂
Happy to share our new study published in The Cryosphere !
doi.org/10.5194/tc-1...
We modelled the evolution of the Greenland Ice Sheet from the LGM (24 ka) to the present and learned a lot on its former history and dynamics !
@jeremyely.bsky.social @chrisdclark.bsky.social
Happy to share our new study published in The Cryosphere !
doi.org/10.5194/tc-1...
We modelled the evolution of the Greenland Ice Sheet from the LGM (24 ka) to the present and learned a lot on its former history and dynamics !
@jeremyely.bsky.social @chrisdclark.bsky.social
November 18, 2025 at 2:35 PM
New paper alert ! 🙂
Happy to share our new study published in The Cryosphere !
doi.org/10.5194/tc-1...
We modelled the evolution of the Greenland Ice Sheet from the LGM (24 ka) to the present and learned a lot on its former history and dynamics !
@jeremyely.bsky.social @chrisdclark.bsky.social
Happy to share our new study published in The Cryosphere !
doi.org/10.5194/tc-1...
We modelled the evolution of the Greenland Ice Sheet from the LGM (24 ka) to the present and learned a lot on its former history and dynamics !
@jeremyely.bsky.social @chrisdclark.bsky.social
Excited to be visiting LDEO for the first time in a decade!
November 12, 2025 at 2:17 PM
Excited to be visiting LDEO for the first time in a decade!
Reposted by Alex Robel
Congratulations to @winnie-polargeo.bsky.social for earning an NSF CAREER grant to map temperatures at the base of the Antarctic ice sheet — the first project of its kind.
This research will refine climate models and help predict future melt, protecting coastal communities.
b.gatech.edu/3LyaveA
This research will refine climate models and help predict future melt, protecting coastal communities.
b.gatech.edu/3LyaveA
Winnie Chu Awarded NSF CAREER Grant to Create First-Ever Map of Antarctic Ice Sheet Base Temperatures
b.gatech.edu
November 11, 2025 at 2:04 PM
Congratulations to @winnie-polargeo.bsky.social for earning an NSF CAREER grant to map temperatures at the base of the Antarctic ice sheet — the first project of its kind.
This research will refine climate models and help predict future melt, protecting coastal communities.
b.gatech.edu/3LyaveA
This research will refine climate models and help predict future melt, protecting coastal communities.
b.gatech.edu/3LyaveA
Reposted by Alex Robel
6,000,000 year old ice & plenty of wind and cold! What folks go through for old ice.
Team is headed back to Allan Hills now, follow more at COLDEX.org
Support via the incredible National Science Foundation and US Antarctic Program.
PNAS 6Myr results: www.pnas.org/doi/10.1073/...
Team is headed back to Allan Hills now, follow more at COLDEX.org
Support via the incredible National Science Foundation and US Antarctic Program.
PNAS 6Myr results: www.pnas.org/doi/10.1073/...
November 5, 2025 at 3:29 PM
6,000,000 year old ice & plenty of wind and cold! What folks go through for old ice.
Team is headed back to Allan Hills now, follow more at COLDEX.org
Support via the incredible National Science Foundation and US Antarctic Program.
PNAS 6Myr results: www.pnas.org/doi/10.1073/...
Team is headed back to Allan Hills now, follow more at COLDEX.org
Support via the incredible National Science Foundation and US Antarctic Program.
PNAS 6Myr results: www.pnas.org/doi/10.1073/...
A new and improved parameterization of the subgrid-scale effects of icebergs will enable realistic simulations of the future of the ocean around ice sheets. Led by postdoc Paul Summers and in collab with Rebecca Jackson, as part of the GLACIOME project! tc.copernicus.org/articles/19/...
Sub-grid parameterization of iceberg drag in a coupled iceberg–ocean model
Abstract. Ocean conditions in fjords play a key role in the accelerating ice mass loss of Greenland's marine-terminating glaciers. Ice mélange and icebergs have been shown to impact fjord circulation,...
tc.copernicus.org
October 31, 2025 at 12:55 PM
A new and improved parameterization of the subgrid-scale effects of icebergs will enable realistic simulations of the future of the ocean around ice sheets. Led by postdoc Paul Summers and in collab with Rebecca Jackson, as part of the GLACIOME project! tc.copernicus.org/articles/19/...
Reposted by Alex Robel
🌊🧊🇦🇶
I am happy and proud to present our #platformist team effort out in @nature.com!
www.nature.com/articles/s41...
We examine if, when, and why #Antarctic #ice shelves will no longer be viable, at the latest, due to changes in #atmosphere and #ocean conditions.
A little 🧵 for the experts...
1/7
I am happy and proud to present our #platformist team effort out in @nature.com!
www.nature.com/articles/s41...
We examine if, when, and why #Antarctic #ice shelves will no longer be viable, at the latest, due to changes in #atmosphere and #ocean conditions.
A little 🧵 for the experts...
1/7
Ocean warming threatens the viability of 60% of Antarctic ice shelves - Nature
The viability of Antarctic ice shelves under low rates and high rates of global warming is modelled to estimate when it will become unfeasible for the ice shelves to maintain their present-day shape.
www.nature.com
October 29, 2025 at 4:41 PM
🌊🧊🇦🇶
I am happy and proud to present our #platformist team effort out in @nature.com!
www.nature.com/articles/s41...
We examine if, when, and why #Antarctic #ice shelves will no longer be viable, at the latest, due to changes in #atmosphere and #ocean conditions.
A little 🧵 for the experts...
1/7
I am happy and proud to present our #platformist team effort out in @nature.com!
www.nature.com/articles/s41...
We examine if, when, and why #Antarctic #ice shelves will no longer be viable, at the latest, due to changes in #atmosphere and #ocean conditions.
A little 🧵 for the experts...
1/7
Reposted by Alex Robel
PNAS: Six-million-year-old ice discovered in Antarctica offers unprecedented window into a warmer Earth via our NSF COLDEX & US Antarctic Program. ❄️ www.pnas.org/doi/10.1073/...
October 28, 2025 at 9:44 PM
PNAS: Six-million-year-old ice discovered in Antarctica offers unprecedented window into a warmer Earth via our NSF COLDEX & US Antarctic Program. ❄️ www.pnas.org/doi/10.1073/...
A great explainer on @dgrau13.bsky.social’s recent paper finding simple equations describing the size of melt lakes on ice sheets doi.org/10.1038/s414...
October 27, 2025 at 10:20 PM
A great explainer on @dgrau13.bsky.social’s recent paper finding simple equations describing the size of melt lakes on ice sheets doi.org/10.1038/s414...
Reposted by Alex Robel
Career update: I’m excited & honored to be @igsoc.bsky.social's new Secretary General! I’m particularly excited to return to my roots as a glaciologist in this community-facing role. As I’m getting up to speed, feel free to reach out & see you at IGS meetings and publishing in IGS journals soon?!
October 27, 2025 at 12:27 PM
Career update: I’m excited & honored to be @igsoc.bsky.social's new Secretary General! I’m particularly excited to return to my roots as a glaciologist in this community-facing role. As I’m getting up to speed, feel free to reach out & see you at IGS meetings and publishing in IGS journals soon?!
Reposted by Alex Robel
Icebergs are big. Researchers made mini versions in a lab to better understand what moves them.
eos.org/articles/mel...
eos.org/articles/mel...
Melting Cylinders of Ice Reveal an Iceberg’s Tipping Point - Eos
New lab experiments on cylinders of pure ice shed light on how icebergs flip over as they melt, demonstrating the link between a warming ocean and small-scale events that can have rippling consequence...
eos.org
October 24, 2025 at 9:37 PM
Icebergs are big. Researchers made mini versions in a lab to better understand what moves them.
eos.org/articles/mel...
eos.org/articles/mel...
Reposted by Alex Robel
New paper drop led by former postdoc Jacob Adler now at ASU. www.nature.com/articles/s43...
Pressure, temperature, & composition affect the transport and morphology of sedimentary flows on Mars - in space and time!
☠️ beware of using earth analogs to interpret Hesperian and Amazonian deposits☠️
Pressure, temperature, & composition affect the transport and morphology of sedimentary flows on Mars - in space and time!
☠️ beware of using earth analogs to interpret Hesperian and Amazonian deposits☠️
Microclimate governs the morphology of sediment flows on Mars - Communications Earth & Environment
Gravitational flow deposits on Earth may not be meaningful analogues for those on Mars or other planetary bodies according to laboratory experiments conducted at Mars-like temperatures and pressures w...
www.nature.com
October 24, 2025 at 7:12 PM
New paper drop led by former postdoc Jacob Adler now at ASU. www.nature.com/articles/s43...
Pressure, temperature, & composition affect the transport and morphology of sedimentary flows on Mars - in space and time!
☠️ beware of using earth analogs to interpret Hesperian and Amazonian deposits☠️
Pressure, temperature, & composition affect the transport and morphology of sedimentary flows on Mars - in space and time!
☠️ beware of using earth analogs to interpret Hesperian and Amazonian deposits☠️
A great piece on work being done around flood prediction and resilience at GT making the connection with fundamental glacier physics 🌊🐝
Georgia Tech researchers are developing solutions to monitor and forecast flooding, as well as restore ecosystems to prevent future flooding. These efforts support communities’ resilience in the face of climate change and keep the U.S. secure. b.gatech.edu/47BcWW0 f
October 21, 2025 at 8:07 PM
A great piece on work being done around flood prediction and resilience at GT making the connection with fundamental glacier physics 🌊🐝
Reposted by Alex Robel
I was interviewed for this great piece about sea level rise.
Solid reporting here on the scientific controversy, but I like that Evan ended with my bigger picture quote that a lot of the controversy doesn't really matter because by 2100, we will be talking about a radically different coastline.
Solid reporting here on the scientific controversy, but I like that Evan ended with my bigger picture quote that a lot of the controversy doesn't really matter because by 2100, we will be talking about a radically different coastline.
How Soon Will the Seas Rise? | Quanta Magazine
The uniquely vulnerable West Antarctic Ice Sheet holds enough water to raise global sea levels by 5 meters. But when that will happen — and how fast — is anything but settled.
www.quantamagazine.org
October 20, 2025 at 8:59 PM
I was interviewed for this great piece about sea level rise.
Solid reporting here on the scientific controversy, but I like that Evan ended with my bigger picture quote that a lot of the controversy doesn't really matter because by 2100, we will be talking about a radically different coastline.
Solid reporting here on the scientific controversy, but I like that Evan ended with my bigger picture quote that a lot of the controversy doesn't really matter because by 2100, we will be talking about a radically different coastline.
Reposted by Alex Robel
🚨 New paper alert!
Research by postdoc Maaike Izeboud from the bglacier group in Nature Climate Change 🎉
Using 20 years of satellite data, she mapped Antarctic ice shelf fractures and showed how damage rises under high emissions but stabilises in low-emission futures
www.nature.com/articles/s41...
Research by postdoc Maaike Izeboud from the bglacier group in Nature Climate Change 🎉
Using 20 years of satellite data, she mapped Antarctic ice shelf fractures and showed how damage rises under high emissions but stabilises in low-emission futures
www.nature.com/articles/s41...
Damage development on Antarctic ice shelves sensitive to climate warming - Nature Climate Change
Damages such as crevasses or cracks can be early indicators of ice shelf weakening. Here, the authors quantify changes in damage structures in Antarctic ice sheets, which show sensitivity to warming
www.nature.com
October 17, 2025 at 1:27 PM
🚨 New paper alert!
Research by postdoc Maaike Izeboud from the bglacier group in Nature Climate Change 🎉
Using 20 years of satellite data, she mapped Antarctic ice shelf fractures and showed how damage rises under high emissions but stabilises in low-emission futures
www.nature.com/articles/s41...
Research by postdoc Maaike Izeboud from the bglacier group in Nature Climate Change 🎉
Using 20 years of satellite data, she mapped Antarctic ice shelf fractures and showed how damage rises under high emissions but stabilises in low-emission futures
www.nature.com/articles/s41...
Reposted by Alex Robel
We have a new paper out! Work with @leighstearns.bsky.social, @laserglaciers.bsky.social, and Sid Shankar studying the potential of new ICEYE SAR satellite imagery to study the dynamic behaviour of ice mélange around the margins of the Greenland Ice Sheet.
Read more here: tinyurl.com/mtc94juu
Read more here: tinyurl.com/mtc94juu
October 14, 2025 at 7:25 PM
We have a new paper out! Work with @leighstearns.bsky.social, @laserglaciers.bsky.social, and Sid Shankar studying the potential of new ICEYE SAR satellite imagery to study the dynamic behaviour of ice mélange around the margins of the Greenland Ice Sheet.
Read more here: tinyurl.com/mtc94juu
Read more here: tinyurl.com/mtc94juu
Reposted by Alex Robel
🌊🌊JOB ALERT!! Are you an ice sheet modeler looking for a postdoc that does not rely on federal funding? Come join our research team at University of Wisconsin-Madison to study the physical and human dynamics of sea-level rise. www.linkedin.com/posts/andrea...
Job ad for postdoctoral research in ice sheet modeling | Andrea Dutton
🌊 🌊 JOB ALERT!! Looking for a postdoc that does not rely on federal funding?? Looking to live in a city that is routinely ranked as one of the best cities to live in across the entire U.S.? Come jo...
www.linkedin.com
October 10, 2025 at 11:14 PM
🌊🌊JOB ALERT!! Are you an ice sheet modeler looking for a postdoc that does not rely on federal funding? Come join our research team at University of Wisconsin-Madison to study the physical and human dynamics of sea-level rise. www.linkedin.com/posts/andrea...
Reposted by Alex Robel
We’ve made our results into an interactive map showing which infrastructure across the Global South is exposed to rising seas. It shows how exposure varies with topography & development + what’s possible to protect with swift action.
sea-level-submergence.projects.earthengine.app/view/sea-lev...
sea-level-submergence.projects.earthengine.app/view/sea-lev...
October 9, 2025 at 8:11 PM
We’ve made our results into an interactive map showing which infrastructure across the Global South is exposed to rising seas. It shows how exposure varies with topography & development + what’s possible to protect with swift action.
sea-level-submergence.projects.earthengine.app/view/sea-lev...
sea-level-submergence.projects.earthengine.app/view/sea-lev...
Reposted by Alex Robel
Tidewater glacier calving events inspire awe and remind us to be humble. Turns out they also stir up fjord waters and amplify melt. New paper "Calving as a Source of Acute and Persistent Kinetic Energy to Enhance Submarine Melting..." ❤️glaciology agupubs.onlinelibrary.wiley.com/doi/10.1029/...
October 9, 2025 at 5:53 AM
Tidewater glacier calving events inspire awe and remind us to be humble. Turns out they also stir up fjord waters and amplify melt. New paper "Calving as a Source of Acute and Persistent Kinetic Energy to Enhance Submarine Melting..." ❤️glaciology agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Presenting Dr. Ziad Rashed!! 🧊❄️🍾🎉
October 2, 2025 at 7:26 PM
Presenting Dr. Ziad Rashed!! 🧊❄️🍾🎉
Reposted by Alex Robel
Equally as important, please check out the accompanying AWS public dataset for all the cloud-optimized point cloud files and COGs in this S3 bucket (s3://atlas-lidar-helheim/).
An 8-year record of daily and sub-daily ATLAS elevations and velocities when operational. The first of its kind!
An 8-year record of daily and sub-daily ATLAS elevations and velocities when operational. The first of its kind!
October 1, 2025 at 11:53 PM
Equally as important, please check out the accompanying AWS public dataset for all the cloud-optimized point cloud files and COGs in this S3 bucket (s3://atlas-lidar-helheim/).
An 8-year record of daily and sub-daily ATLAS elevations and velocities when operational. The first of its kind!
An 8-year record of daily and sub-daily ATLAS elevations and velocities when operational. The first of its kind!