DTU Cryosphere group
@dtucryo.bsky.social
The Cryosphere Research Group at DTU Space 🌍❄️ | Geodesy & Earth Observation Department |
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DTU Cryosphere group
@dtucryo.bsky.social
· Sep 26
We’re the Cryosphere Research Group at DTU Space, studying the polar regions using satellite remote sensing. We monitor and map changes in snow & ice, assess polar climate change impacts, and provide data to imporve polar climate models. Follow for polar science insights! ❄️#Cryosphere #PolarResearch
One year into the ESA Digital Twin (DT) Earth Ice Sheets project ❄️@eo4cryo.bsky.social and @tabea-rettelbach.bsky.social with other @esa.int DTs at the science meeting in Frascati to present the pre-operational dtc-ice-sheets.org & new ideas for holistic data cubes 🛰️🌐 #DigitalTwinEarth #IceSheets
February 4, 2026 at 10:50 AM
One year into the ESA Digital Twin (DT) Earth Ice Sheets project ❄️@eo4cryo.bsky.social and @tabea-rettelbach.bsky.social with other @esa.int DTs at the science meeting in Frascati to present the pre-operational dtc-ice-sheets.org & new ideas for holistic data cubes 🛰️🌐 #DigitalTwinEarth #IceSheets
🍾🥂One of our most exciting pieces of news this month must be the hand-in of Anna Puggaard's PhD thesis on "Earth observation for surface mass balance" on January 15, celebrated with cake and bubbles! We look forward to seeing her in the office as a postdoc in February, after a well-deserved break! 🏝️
January 28, 2026 at 2:09 PM
🍾🥂One of our most exciting pieces of news this month must be the hand-in of Anna Puggaard's PhD thesis on "Earth observation for surface mass balance" on January 15, celebrated with cake and bubbles! We look forward to seeing her in the office as a postdoc in February, after a well-deserved break! 🏝️
New paper hot off the press in #IEEE JSTARS from our very own @kirkscanlan.bsky.social rkscanlan.bsky.social and @eo4cryo.bsky.social along with @anja-ruti.bsky.social l from #GEUS 🔥🔥 Find it here ieeexplore.ieee.org/document/113...
Spatiotemporal Heterogeneity in Greenland Firn From the Synthesis of Satellite Radar Altimetry and Passive Microwave Measurements
The spatiotemporal properties of the Greenland Ice Sheet firn layer are an important factor when assessing overall ice sheet mass balance and internal meltwater storage capacity. Increasingly a target...
ieeexplore.ieee.org
January 23, 2026 at 2:05 PM
New paper hot off the press in #IEEE JSTARS from our very own @kirkscanlan.bsky.social rkscanlan.bsky.social and @eo4cryo.bsky.social along with @anja-ruti.bsky.social l from #GEUS 🔥🔥 Find it here ieeexplore.ieee.org/document/113...
📢 Going to #EGU26? Do you work with #radars on icy and rocky surfaces? ➡️Look no further!
Submit an abstract to this session, convened by our @kirkscanlan.bsky.social and @reneefredensborg.bsky.social with Hameed Moqadam! The deadline is fast approaching ⌛ - submit by 15 January 2026 at 13:00 CET!
Submit an abstract to this session, convened by our @kirkscanlan.bsky.social and @reneefredensborg.bsky.social with Hameed Moqadam! The deadline is fast approaching ⌛ - submit by 15 January 2026 at 13:00 CET!
Heading to #EGU26 and use #radar to study terrestrial and planetary surfaces (both icy and rocky 🤯)? Have we got the session for you!
Consider submitting an abstract to #EGU26 CR6.3 by January 15 2026.
Read more about the session here www.egu26.eu/session/56853
Hope to see you there!
Consider submitting an abstract to #EGU26 CR6.3 by January 15 2026.
Read more about the session here www.egu26.eu/session/56853
Hope to see you there!
January 13, 2026 at 3:01 PM
📢 Going to #EGU26? Do you work with #radars on icy and rocky surfaces? ➡️Look no further!
Submit an abstract to this session, convened by our @kirkscanlan.bsky.social and @reneefredensborg.bsky.social with Hameed Moqadam! The deadline is fast approaching ⌛ - submit by 15 January 2026 at 13:00 CET!
Submit an abstract to this session, convened by our @kirkscanlan.bsky.social and @reneefredensborg.bsky.social with Hameed Moqadam! The deadline is fast approaching ⌛ - submit by 15 January 2026 at 13:00 CET!
Great to be at the 2026 Greenland Ice Sheet Seminar at the Niels Bohr Institute with cryosphere colleagues.
Photo: @kirkscanlan.bsky.social presenting for DTU Space.
#GreenlandIceSheet #Cryosphere #DTUSpace
Photo: @kirkscanlan.bsky.social presenting for DTU Space.
#GreenlandIceSheet #Cryosphere #DTUSpace
January 9, 2026 at 7:35 PM
Great to be at the 2026 Greenland Ice Sheet Seminar at the Niels Bohr Institute with cryosphere colleagues.
Photo: @kirkscanlan.bsky.social presenting for DTU Space.
#GreenlandIceSheet #Cryosphere #DTUSpace
Photo: @kirkscanlan.bsky.social presenting for DTU Space.
#GreenlandIceSheet #Cryosphere #DTUSpace
🌟Meet our Group🌟
@mikkelaabykruse.bsky.social is a PhD student in the Cryo Group. He uses satellite remote sensing to study lakes hidden beneath the Greenland Ice Sheet 🛰️🧊🌊 Some of these lakes can contain and later release enormous amounts of meltwater. #Cryosphere #RemoteSensing #Greenland
@mikkelaabykruse.bsky.social is a PhD student in the Cryo Group. He uses satellite remote sensing to study lakes hidden beneath the Greenland Ice Sheet 🛰️🧊🌊 Some of these lakes can contain and later release enormous amounts of meltwater. #Cryosphere #RemoteSensing #Greenland
January 9, 2026 at 3:29 PM
🌟Meet our Group🌟
@mikkelaabykruse.bsky.social is a PhD student in the Cryo Group. He uses satellite remote sensing to study lakes hidden beneath the Greenland Ice Sheet 🛰️🧊🌊 Some of these lakes can contain and later release enormous amounts of meltwater. #Cryosphere #RemoteSensing #Greenland
@mikkelaabykruse.bsky.social is a PhD student in the Cryo Group. He uses satellite remote sensing to study lakes hidden beneath the Greenland Ice Sheet 🛰️🧊🌊 Some of these lakes can contain and later release enormous amounts of meltwater. #Cryosphere #RemoteSensing #Greenland
Reposted by DTU Cryosphere group
To round off the year and just before Christmas, I had the amazing opportunity of spending the last week in Calgary, Alberta, meeting my colleagues at @ucalgary.bsky.social while participating in the ArcticNet's Annual Science Meeting #ASM25, and presenting my #MEOPAR funded project #SNOWMASS ❄️🛩️🛰️! ➡️
ArcticNet's Annual Scientific Meeting (ASM) 2025
Join ArcticNet's Annual Scientific Meeting (ASM) 2025, December 15-18, 2025. Learn more on Fourwaves.
event.fourwaves.com
December 21, 2025 at 2:51 PM
To round off the year and just before Christmas, I had the amazing opportunity of spending the last week in Calgary, Alberta, meeting my colleagues at @ucalgary.bsky.social while participating in the ArcticNet's Annual Science Meeting #ASM25, and presenting my #MEOPAR funded project #SNOWMASS ❄️🛩️🛰️! ➡️
🌟Meet our Group🌟
Sebastian B. Simonsen (@eo4cryo.bsky.social) is a senior researcher using satellite altimetry to study ice sheets, sea-level change, snow, and ice dynamics. Lately focused on data-driven models and digital twins. PI for Digital Twin Ice Sheets. Also involved in C3S and CCI.
Sebastian B. Simonsen (@eo4cryo.bsky.social) is a senior researcher using satellite altimetry to study ice sheets, sea-level change, snow, and ice dynamics. Lately focused on data-driven models and digital twins. PI for Digital Twin Ice Sheets. Also involved in C3S and CCI.
December 15, 2025 at 2:27 PM
🌟Meet our Group🌟
Sebastian B. Simonsen (@eo4cryo.bsky.social) is a senior researcher using satellite altimetry to study ice sheets, sea-level change, snow, and ice dynamics. Lately focused on data-driven models and digital twins. PI for Digital Twin Ice Sheets. Also involved in C3S and CCI.
Sebastian B. Simonsen (@eo4cryo.bsky.social) is a senior researcher using satellite altimetry to study ice sheets, sea-level change, snow, and ice dynamics. Lately focused on data-driven models and digital twins. PI for Digital Twin Ice Sheets. Also involved in C3S and CCI.
Our colleague @tabea-rettelbach.bsky.social is developing dynamic data cubes for #EO data over ice sheets (literally 🧊). The goal is to make complex geospatial datasets easier to find, access, and use for e.g. modelers. #datacubes @icelink-project.bsky.social #PISCO #DTC_icesheets
December 9, 2025 at 5:16 PM
Our colleague @tabea-rettelbach.bsky.social is developing dynamic data cubes for #EO data over ice sheets (literally 🧊). The goal is to make complex geospatial datasets easier to find, access, and use for e.g. modelers. #datacubes @icelink-project.bsky.social #PISCO #DTC_icesheets
Reposted by DTU Cryosphere group
We have provided new Greenland Ice Sheet mass loss estimates to @polarportal.bsky.social. These are derived from the #GRACE and #GRACE-FO missions, and show that since the launch of GRACE in 2002, the ice sheet has lost approximately 5200 gigatonnes of ice!
New GRACE data available on the Polar Portal. From April 2002 to July 2025, the Greenland Ice Sheet has lost roughly 5200 gigatonnes (=km³). This has contributed 1.5 cm to global sea level rise and would be enough to cover Denmark with 121 m of water.
polarportal.dk/en/greenland...
polarportal.dk/en/greenland...
December 7, 2025 at 8:41 PM
We have provided new Greenland Ice Sheet mass loss estimates to @polarportal.bsky.social. These are derived from the #GRACE and #GRACE-FO missions, and show that since the launch of GRACE in 2002, the ice sheet has lost approximately 5200 gigatonnes of ice!
We have provided new Greenland Ice Sheet mass loss estimates to @polarportal.bsky.social. These are derived from the #GRACE and #GRACE-FO missions, and show that since the launch of GRACE in 2002, the ice sheet has lost approximately 5200 gigatonnes of ice!
New GRACE data available on the Polar Portal. From April 2002 to July 2025, the Greenland Ice Sheet has lost roughly 5200 gigatonnes (=km³). This has contributed 1.5 cm to global sea level rise and would be enough to cover Denmark with 121 m of water.
polarportal.dk/en/greenland...
polarportal.dk/en/greenland...
December 7, 2025 at 8:41 PM
We have provided new Greenland Ice Sheet mass loss estimates to @polarportal.bsky.social. These are derived from the #GRACE and #GRACE-FO missions, and show that since the launch of GRACE in 2002, the ice sheet has lost approximately 5200 gigatonnes of ice!
Reposted by DTU Cryosphere group
Heading to #EGU26 and use #radar to study terrestrial and planetary surfaces (both icy and rocky 🤯)? Have we got the session for you!
Consider submitting an abstract to #EGU26 CR6.3 by January 15 2026.
Read more about the session here www.egu26.eu/session/56853
Hope to see you there!
Consider submitting an abstract to #EGU26 CR6.3 by January 15 2026.
Read more about the session here www.egu26.eu/session/56853
Hope to see you there!
December 4, 2025 at 1:58 PM
Heading to #EGU26 and use #radar to study terrestrial and planetary surfaces (both icy and rocky 🤯)? Have we got the session for you!
Consider submitting an abstract to #EGU26 CR6.3 by January 15 2026.
Read more about the session here www.egu26.eu/session/56853
Hope to see you there!
Consider submitting an abstract to #EGU26 CR6.3 by January 15 2026.
Read more about the session here www.egu26.eu/session/56853
Hope to see you there!
It may be difficult for the untrained eye to see - but we were of course dressed in the colors of glaciers at last weeks Christmas party at DTU Space🧊❄️🎄
December 2, 2025 at 8:54 AM
It may be difficult for the untrained eye to see - but we were of course dressed in the colors of glaciers at last weeks Christmas party at DTU Space🧊❄️🎄
Rasmus and @tabea-rettelbach.bsky.social are in Budapest this week at HungaroMet for the PISCO & @polarres.bsky.social hackathon! 🇭🇺
With 20 other students and instructors, they’re exploring projects that combine climate model outputs with in-situ and EO data to better understand our Polar regions.🌍❄️
With 20 other students and instructors, they’re exploring projects that combine climate model outputs with in-situ and EO data to better understand our Polar regions.🌍❄️
November 6, 2025 at 1:01 PM
Rasmus and @tabea-rettelbach.bsky.social are in Budapest this week at HungaroMet for the PISCO & @polarres.bsky.social hackathon! 🇭🇺
With 20 other students and instructors, they’re exploring projects that combine climate model outputs with in-situ and EO data to better understand our Polar regions.🌍❄️
With 20 other students and instructors, they’re exploring projects that combine climate model outputs with in-situ and EO data to better understand our Polar regions.🌍❄️
Last week we attended DTU Project Day and had great conversations with many interested students about potential new projects 🛰️❄️
#DTU #ProjectDay #StudentProjects #Research #Cryosphere #RemoteSensing #IceSheets
#DTU #ProjectDay #StudentProjects #Research #Cryosphere #RemoteSensing #IceSheets
November 3, 2025 at 8:13 AM
Last week we attended DTU Project Day and had great conversations with many interested students about potential new projects 🛰️❄️
#DTU #ProjectDay #StudentProjects #Research #Cryosphere #RemoteSensing #IceSheets
#DTU #ProjectDay #StudentProjects #Research #Cryosphere #RemoteSensing #IceSheets
We’re attending the IGS Nordic Branch Meeting 2025 in Copenhagen, at GEUS. Great to meet colleagues, hear exciting talks, and spark new discussions on ice, climate and modelling ❄️🧊📊
#Cryosphere #Glaciology #ClimateScience #IceSheet #PolarResearch #NordicScience #IGS2025
#Cryosphere #Glaciology #ClimateScience #IceSheet #PolarResearch #NordicScience #IGS2025
October 31, 2025 at 7:46 AM
We’re attending the IGS Nordic Branch Meeting 2025 in Copenhagen, at GEUS. Great to meet colleagues, hear exciting talks, and spark new discussions on ice, climate and modelling ❄️🧊📊
#Cryosphere #Glaciology #ClimateScience #IceSheet #PolarResearch #NordicScience #IGS2025
#Cryosphere #Glaciology #ClimateScience #IceSheet #PolarResearch #NordicScience #IGS2025
DTU Space was at the Danish Climate Science Symposium 2025 🇩🇰
We’re shared a handful of posters and a talk by Sebastian B. Simonsen: “From Satellites to Digital Twins – Monitoring the Greenland Ice Sheet.” Great discussions on climate, ice, and models! ❄️
#DTUSpace #Greenland #Cryosphere #DMI
We’re shared a handful of posters and a talk by Sebastian B. Simonsen: “From Satellites to Digital Twins – Monitoring the Greenland Ice Sheet.” Great discussions on climate, ice, and models! ❄️
#DTUSpace #Greenland #Cryosphere #DMI
October 27, 2025 at 8:26 AM
DTU Space was at the Danish Climate Science Symposium 2025 🇩🇰
We’re shared a handful of posters and a talk by Sebastian B. Simonsen: “From Satellites to Digital Twins – Monitoring the Greenland Ice Sheet.” Great discussions on climate, ice, and models! ❄️
#DTUSpace #Greenland #Cryosphere #DMI
We’re shared a handful of posters and a talk by Sebastian B. Simonsen: “From Satellites to Digital Twins – Monitoring the Greenland Ice Sheet.” Great discussions on climate, ice, and models! ❄️
#DTUSpace #Greenland #Cryosphere #DMI
Reposted by DTU Cryosphere group
Our office is now ready for Halloween 🎃 🎃
October 20, 2025 at 7:55 PM
Our office is now ready for Halloween 🎃 🎃
📢 New publication! Ahead of #ESA #CRISTAL, we explore dual-frequency #altimetry for estimating 🧊 snow depth over sea ice.
🛩️ Part 1: Airborne multi-freq altimetry → snow depth 👉 tc.copernicus.org/articles/19/...
🛰️ Part 2: Compare w/ CryoSat-2 & ICESat-2 #CRYO2ICE 👉 tc.copernicus.org/articles/19/...
🛩️ Part 1: Airborne multi-freq altimetry → snow depth 👉 tc.copernicus.org/articles/19/...
🛰️ Part 2: Compare w/ CryoSat-2 & ICESat-2 #CRYO2ICE 👉 tc.copernicus.org/articles/19/...
Multi-frequency altimetry snow depth estimates over heterogeneous snow-covered Antarctic summer sea ice – Part 1: C∕S-, Ku-, and Ka-band airborne observations
Abstract. The recent alignment of CryoSat-2 to maximise orbital coincidence with the Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) over the Southern Ocean and Antarctica in July 2022, known as...
tc.copernicus.org
October 20, 2025 at 8:37 AM
📢 New publication! Ahead of #ESA #CRISTAL, we explore dual-frequency #altimetry for estimating 🧊 snow depth over sea ice.
🛩️ Part 1: Airborne multi-freq altimetry → snow depth 👉 tc.copernicus.org/articles/19/...
🛰️ Part 2: Compare w/ CryoSat-2 & ICESat-2 #CRYO2ICE 👉 tc.copernicus.org/articles/19/...
🛩️ Part 1: Airborne multi-freq altimetry → snow depth 👉 tc.copernicus.org/articles/19/...
🛰️ Part 2: Compare w/ CryoSat-2 & ICESat-2 #CRYO2ICE 👉 tc.copernicus.org/articles/19/...
We are proud to be contributors to a chapter on Arctic land ice and its changes in the #AMAP Assessment Report 2026!❄️
#AMAP (Arctic Monitoring and Assessment Programme) is the working group under the #ArcticCouncil that produces science-based assessments to inform policy and decision-making ❄️
#AMAP (Arctic Monitoring and Assessment Programme) is the working group under the #ArcticCouncil that produces science-based assessments to inform policy and decision-making ❄️
October 6, 2025 at 7:36 AM
We are proud to be contributors to a chapter on Arctic land ice and its changes in the #AMAP Assessment Report 2026!❄️
#AMAP (Arctic Monitoring and Assessment Programme) is the working group under the #ArcticCouncil that produces science-based assessments to inform policy and decision-making ❄️
#AMAP (Arctic Monitoring and Assessment Programme) is the working group under the #ArcticCouncil that produces science-based assessments to inform policy and decision-making ❄️
Antarctica is undergoing “greenlandification,” with ice loss processes mirroring Greenland ❄️🌍 New paper out in Nature Geoscience with DTU Space contributions on key signs: doi.org/10.1038/s415... #ClimateChange #Antarctica #Greenlandification
The Greenlandification of Antarctica - Nature Geoscience
Climate and ice sheet processes in Antarctica increasingly reflect those observed earlier in Greenland. Applying process insights from Greenland can improve projections of future Antarctic ice and climate behaviour.
doi.org
October 3, 2025 at 12:11 PM
Antarctica is undergoing “greenlandification,” with ice loss processes mirroring Greenland ❄️🌍 New paper out in Nature Geoscience with DTU Space contributions on key signs: doi.org/10.1038/s415... #ClimateChange #Antarctica #Greenlandification
🌍✨Great energy at DTU Space with a visit from Unge GIS Brugere!
Yesterday, we welcomed GIS users to #DTUSpace. The visit focused on spatial data from #EarthObservations and methods for tackling geospatial challenges, highlighting the importance of precise geospatial data in the Arctic and beyond 🌍❄️
Yesterday, we welcomed GIS users to #DTUSpace. The visit focused on spatial data from #EarthObservations and methods for tackling geospatial challenges, highlighting the importance of precise geospatial data in the Arctic and beyond 🌍❄️
October 1, 2025 at 8:50 AM
🌍✨Great energy at DTU Space with a visit from Unge GIS Brugere!
Yesterday, we welcomed GIS users to #DTUSpace. The visit focused on spatial data from #EarthObservations and methods for tackling geospatial challenges, highlighting the importance of precise geospatial data in the Arctic and beyond 🌍❄️
Yesterday, we welcomed GIS users to #DTUSpace. The visit focused on spatial data from #EarthObservations and methods for tackling geospatial challenges, highlighting the importance of precise geospatial data in the Arctic and beyond 🌍❄️
Last week, @reneefredensborg.bsky.social, Kristina Belinska and Stine Rose enjoyed the Mediterranean sun ☀️ in Crete while presenting results from @esa.int projects #S3MPC #St3tART-FO #IN-PROVA #CCI on calibration and validation of satellite altimetry during the calval4altcrete2025.eu ➡️
2nd International Review Workshop on Satellite Altimetry Cal/Val & Metrology
2nd International Review Workshop on Satellite Altimetry Cal/Val & Metrology The 2nd International Review on Satellite Altimetry Calibration/Validation (Cal/Val) and Metrology is to be held in Chania,...
calval4altcrete2025.eu
September 29, 2025 at 7:58 AM
Last week, @reneefredensborg.bsky.social, Kristina Belinska and Stine Rose enjoyed the Mediterranean sun ☀️ in Crete while presenting results from @esa.int projects #S3MPC #St3tART-FO #IN-PROVA #CCI on calibration and validation of satellite altimetry during the calval4altcrete2025.eu ➡️
Congratulations to Behzad Forouzi Feshalami for defending his PhD thesis: "Numerical modeling of wave-induced erosion of floating icebergs" - a valuable contribution to improving our understanding of ice–ocean interactions! 🌊🧊
In collaboration with #NTNU, supervised by @spacehsk.bsky.social 🎓
In collaboration with #NTNU, supervised by @spacehsk.bsky.social 🎓
September 26, 2025 at 12:58 PM
Congratulations to Behzad Forouzi Feshalami for defending his PhD thesis: "Numerical modeling of wave-induced erosion of floating icebergs" - a valuable contribution to improving our understanding of ice–ocean interactions! 🌊🧊
In collaboration with #NTNU, supervised by @spacehsk.bsky.social 🎓
In collaboration with #NTNU, supervised by @spacehsk.bsky.social 🎓
Last week, @eo4cryo.bsky.social and @spacehsk.bsky.social were in Iceland and NE Greenland on an airborne #FieldCampaign sampling key data over #SeaIce and #LandIce with a brand-new instrument #CRISTALair🛩
Cutting-edge science in action, unlocking insights for future satellites🛰 #EarthObservation
Cutting-edge science in action, unlocking insights for future satellites🛰 #EarthObservation
September 22, 2025 at 11:35 AM
Last week, @eo4cryo.bsky.social and @spacehsk.bsky.social were in Iceland and NE Greenland on an airborne #FieldCampaign sampling key data over #SeaIce and #LandIce with a brand-new instrument #CRISTALair🛩
Cutting-edge science in action, unlocking insights for future satellites🛰 #EarthObservation
Cutting-edge science in action, unlocking insights for future satellites🛰 #EarthObservation