iiinova — where your digital self keeps evolving

DTU Cryosphere group @dtucryo.bsky.social · 01/10/2026

Can a satellite built to measure changes in ocean and river water levels also reveal meltwater's hidden pathways deep beneath the Greenland Ice Sheet? ❄️ Happy to share that Senior Researcher Mai Winstrup has received a grant from @VILLUMFONDEN to investigate exactly this!

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DTU Cryosphere group @dtucryo.bsky.social · 25/09/2026

Want to learn how we can connect #EO, in-situ, and modeling data with graphs and data cubes to better understand our ice sheets? 🇬🇱🇦🇶 Then tune in on Monday (28/9), to @esaearth.esa.int's webinar, where @tabea-rettelbach.bsky.social & colleagues will give some cool insights! 🧊 registration link 👇

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DTU Cryosphere group @dtucryo.bsky.social · 24/09/2026

This week we are in Svalbard for #VOCALIS2026, ESA's altimetry Cal/Val workshop (vocalis2026-workshop.noveltis.fr) 🛰️❄️ Kristina Belinska & Stine Kildegaard Rose gave talks on CRISTAL sea ice and Sentinel-3 land ice. Today, @spacehsk.bsky.social opened the final day on uncertainty quantification!

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DTU Cryosphere group @dtucryo.bsky.social · 17/09/2026

Many exciting things this week! @louisesandbergs.bsky.social and @eo4cryo.bsky.social are in Innsbruck at the #ESA Polar Science Cluster Collocation Meeting 2026. 🛰️ Here, we are sharing our project outputs and learning from other initiatives. More info: nikal.eventsair.com/polar-scienc...

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ESA Earth Observation @esaearth.esa.int · 16/09/2026

Nearly 5 decades of satellite data reveal the scale of polar ice loss🧊 Using data from 27 missions, including @esa.int's CryoSat & Copernicus Sentinels, a new study found that Greenland and Antarctica lost 11.3 trillion tonnes of ice since the 1970s: www.esa.int/Applications... 📹Otosaka et al(2026)

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DTU Cryosphere group @dtucryo.bsky.social · 16/09/2026

Welcome, Copernicus Sentinel-3C! 🛰️

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DTU Cryosphere group @dtucryo.bsky.social · 14/09/2026

Last week, our @kirkscanlan.bsky.social attended the @igsoc.bsky.social #Radioglaciology symposium in Tübingen 🇩🇪 Here he presented some the great work coming out of the @esaearth.esa.int #ARCTEX project using 🛰️s to study extreme Arctic events 🤯 Overall a fantastic meeting with amazing research!

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DTU Cryosphere group @dtucryo.bsky.social · 10/09/2026

If you haven't already, check out @nataliahavelund.bsky.social new paper on monthly Greenland Ice Sheet surface elevation changes! 🛰️

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DTU Cryosphere group @dtucryo.bsky.social · 09/09/2026

This week, Sebastian (@eo4cryo.bsky.social) is heading to the International Space Summit in Paris (9-10 Sept), joining a round table on Intelligent Space Science! 🛰️❄️ Talking points: sustaining Europe's full research pipeline, and how #AI can help spot ice-sheet tipping points before they happen ❄️

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DTU Cryosphere group @dtucryo.bsky.social · 31/08/2026

At the @esa.int #PISCO and @snowpi.bsky.social hackathon last week, Anna, Kirk, and Tabea joined 30+ researchers from around the world to dig through gigabytes of #EO and climate model data to tackle some exciting polar questions ❄️ 🧊 Let's dig into a couple below👇

DTU Space team! Both Kirk and Tabea were mentors for two projects and Anna (in the middel) were a participant. Wanna know more about the project they did? Check out the following posts :)

Not all time was spend coding. Some evenings were also spend enjoying the nice settings. Here you see Kirk, Kristiina (DMI) and Tabea enjoying a nice sunset overlooking the water.

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DTU Cryosphere group @dtucryo.bsky.social · 08/06/2026

For the second year, our group has joined the national Vi Cykler Til Arbejde #vcta (We Bike to Work) campaign in the month of May! 🚴‍♂️🚴‍♀️💨💨 Our "Polar Pedalers"❄️🥶 team biked 166 days and 2767 kilometers with Anna and Kirk leading the team in total bike days and bike kilometers!

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DTU Cryosphere group @dtucryo.bsky.social · 03/06/2026

One of the ways we study Greenland Ice Sheet mass balance: tracking annual changes in ice surface elevation using CryoSat-2 and ICESat-2. A popular science piece (in Danish 🇩🇰) out now in @Geoforum issuu.com/geoforum5/do... #PROMICE #PRODEM #Massbalance

issuu.com

GEOFORUM 275

Temanummer om, Kortlægning af land, hav og is i Grønland.

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DTU Cryosphere group @dtucryo.bsky.social · 01/06/2026

The @imaqa.be SILA expedition has completed its 1,700 km ski kite traverse of the Greenland Ice Sheet, reaching Qaanaaq on May 18th 🎉 All four explorers are home safe and the GNSS elevation data collected for DTU Space is on its way. Proud to have supported the science behind this exciting mission.

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DTU Cryosphere group @dtucryo.bsky.social · 29/05/2026

We finished the month of May with a DTU Cryosphere Pétanque (or Boules) Tournament in the sun ☀️🌻 The winning team was "Mass Balance Issues"!

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DTU Cryosphere group @dtucryo.bsky.social · 26/05/2026

Excited to share that the first version of the @esa.int #DTCIceSheets is now available! 🎉 You can now explore this big step toward an interactive #EO-driven #DigitalTwin via the platform and its datasets, modules, and use cases for Greenland and Antarctic ice sheets online on dtc-ice-sheets.org 🌍🧊

dtc-ice-sheets.org

DTC Ice Sheets

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DTU Cryosphere group @dtucryo.bsky.social · 19/05/2026

Greetings from Karthaus. It is always a pleasure to be back in the beautiful setting of the Karthaus summer school. This year, Rasmus is attending the course, and Nanna and Louise are teaching.

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DTU Cryosphere group @dtucryo.bsky.social · 19/05/2026

Kicked off May at #EGU26 in Vienna - a week packed with talks, posters & inspiring discussions. Back in the office full of fresh ideas 💡 - and thanks to sunny weather + rental bikes, the #BikeToWork #VCTA streak rolled on even from Vienna 🚴‍♀️ #PolarPedalers

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DTU Cryosphere group @dtucryo.bsky.social · 06/05/2026

☀️ Spring has finally arrived in Copenhagen ☀️ The team celebrated the good weather by painting flower pots and planting some (small-ish) sunflowers to brighten up our offices during our social event🌻

Flower pots painted by the group! Photo credit: Tabea Rettelbach

Cryo group painting and chatting. Photo credit: Tabea Rettelbach

Set-up of the social event at DTU with Mary Langsdale and Tabea Rettelbach (photographer), preparing the event. Photo credit: Tabea Rettelbach

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DTU Cryosphere group @dtucryo.bsky.social · 04/05/2026

Over the past few weeks, @reneefredensborg.bsky.social and @spacehsk.bsky.social have been hands‑on in the #CEMSIE field campaign — coordinating and contributing to ground-based snow ❄️ and sea ice 🧊 observations, as well as helicopter and airborne operations with #CRISTALair 🛩️❄️🧊

Sampling an ice core. Photo credit: Clement Soriot/University of Manitoba

Corner reflector, terrestrial laser scanner and the AWI IceBird aircraft in the background with the EMbird towed below. Credit: Clement Soriot/University of Manitoba

Scatterometers with the sunset in the background. Photo credits: Clement Soriot/University of Manitoba

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DTU Cryosphere group @dtucryo.bsky.social · 01/05/2026

📢 Want to hear more about the EO-based activities of our group? Meet us at #EGU26 @egu.eu next week, we'll be around with the following presentations and sessions:

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DTU Cryosphere group @dtucryo.bsky.social · 30/04/2026

Introducing #PRODEM‑Xtract: An open‑source tool providing 32 m‑resolution annual ice thickness along Greenland Ice Sheet flux gates ❄️ Applied to major Greenland glaciers, it reveals previously unresolved dynamics, thereby improving estimates of solid ice discharge 🧊 Link: tinyurl.com/PRODEM-Xtract

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DTU Cryosphere group @dtucryo.bsky.social · 29/04/2026

The 2025 European State of the Climate is out now! Europe is the fastest-warming continent, warming more than 2x the global average. Read more and explore climate insights for Europe: climate.copernicus.eu/esotc/2025 Illustrations by: @copernicusecmwf.bsky.social #ESOTC2025 #CopernicusClimate

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DTU Cryosphere group @dtucryo.bsky.social · 27/04/2026

🧊 New paper out from the ESA CCI Sea Ice project led by DTU cryo. Advancing the use of independent, non‑satellite observations to validate satellite‑derived sea‑ice thickness - while tackling representativeness and uncertainty head‑on. 👏 @spacehsk.bsky.social, @reneefredensborg.bsky.social

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DTU Cryosphere group @dtucryo.bsky.social · 22/04/2026

We are a scientific partner of the SILA Greenland Mission 2026 with IMAQA ❄️ Using ski kites, the expedition will traverse the Greenland Ice Sheet from South to North and collect GNSS elevation data on behalf of DTU Space 🔗 www.imaqa.be/sila Sila means both weather and state-of-mind in Kalaallisut 🇬🇱

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DTU Cryosphere group @dtucryo.bsky.social · 13/04/2026

Just before Easter, Stine and Mary attended the 9th Sentinel Validation Team meeting, hosted by @esaearth.esa.int and @eumetsat.int in Frascati, Rome Great discussions on ice sheet products and multi-sensor synergy. We can't wait for the upcoming #Sentinel‑3C launch and tandem phases 🚀🧊 #Sentinel3

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DTU Cryosphere group @dtucryo.bsky.social · 30/03/2026

@louisesandbergs.bsky.social and @nataliahavelund.bsky.social attended the CCI colocation meeting last week. There were many important discussions on the future of the programme. Thanks for having us!

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DTU Cryosphere group @dtucryo.bsky.social · 27/03/2026

Excited to kick off ESA’s HARMONY Validation Concept Consolidation & Verification Methodology project, managed by CLS. Proud to lead land ice calibration & validation planning. DTU team: Kristina, Sebastian & Stine. Harmony (launch in 2029) will advance insights into land deformation & glaciers

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DTU Cryosphere group @dtucryo.bsky.social · 26/03/2026

🚨 Applications open! Join us for The Polar Climate Space: a week‑long #hackathon (24–30 Aug) bringing together #ECRs to tackle #Arctic & #Antarctic challenges using #EO, #climate models, in‑situ data & #ML. More info below! 👉 ECR form: tinyurl.com/ycy57mvj 👉 Senior scientists: tinyurl.com/2p9tv992

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DTU Cryosphere group @dtucryo.bsky.social · 23/03/2026

Big congrats to Anna for defending her PhD on surface mass balance using EO data 👏🎓✨ And of course, the celebration included a proper cake with P H D spelled out on top 🎂 #PhD #PhDDefense #SurfaceMassBalance #EarthObservation #Cryosphere

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DTU Cryosphere group @dtucryo.bsky.social · 18/03/2026

Last week, researchers came together for the Danish Antarctic Science Seminar at @ucph.bsky.social to discuss the most recent studies of Antarctic science! @tabea-rettelbach.bsky.social showed how the @esa.int Digital Twin can be used to explore "what-if" scenarios for the Antarctic Ice Sheet ❄️

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DTU Cryosphere group @dtucryo.bsky.social · 12/03/2026

❄️Theory and practice❄️ (Part 2) This week in Sisimiut we continue our Extreme Climate and Physical Nature course on the Arctic Semester by diving into snow physics. After covering the theory, students headed into the field to explore the snowpack firsthand. #CryoTeaching #ArcticDTU #SnowScien

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DTU Cryosphere group @dtucryo.bsky.social · 10/03/2026

New paper alert! 📄 How do Arctic tundra landscapes develop after a wildfire? 🔥 Using high-resolution lidar DEMs and a space-for-time approach, @tabea-rettelbach.bsky.social examined how ice-wedge polygon terrain in Alaskan permafrost landscapes changes following a fire. doi.org/10.1088/1748...

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DTU Cryosphere group @dtucryo.bsky.social · 04/03/2026

❄️Theory and practice❄️ In Sisimiut, Greenland, we teach a DTU course called Extreme Climate and Physical Nature on the Arctic Semester. Earlier this week 30+ students practiced drilling in the ice on the lake in the center of town after learning the theory last week. #CryoTeaching #ArcticDTU

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DTU Cryosphere group @dtucryo.bsky.social · 23/02/2026

Our PhD Student @mikkelaabykruse.bsky.social is currently getting a taste of what it is like to do fieldwork in the Arctic at The University Centre in Svalbard (UNIS)❄️🥽 🧤 Working on a glacier is no safe or easy task, and UNIS is a great place to learn the ropes of what it means to be a glaciologist!

Mikkel suited up for field work in front of a snowcooter on Svalbard

Northern lights visible over the mountains seen at night from a tent in the field

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DTU Cryosphere group @dtucryo.bsky.social · 04/02/2026

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

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DTU Cryosphere group @dtucryo.bsky.social · 28/01/2026

🍾🥂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! 🏝️

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DTU Cryosphere group @dtucryo.bsky.social · 13/01/2026

📢 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!

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DTU Cryosphere group @dtucryo.bsky.social · 09/01/2026

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

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DTU Cryosphere group @dtucryo.bsky.social · 09/01/2026

🌟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

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Renée M. Fredensborg Hansen @reneefredensborg.bsky.social · 21/12/2025

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 ❄️🛩️🛰️! ➡️

event.fourwaves.com

ArcticNet's Annual Scientific Meeting (ASM) 2025

Join ArcticNet's Annual Scientific Meeting (ASM) 2025, December 15-18, 2025. Learn more on Fourwaves.

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DTU Cryosphere group @dtucryo.bsky.social · 15/12/2025

🌟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.

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DTU Cryosphere group @dtucryo.bsky.social · 09/12/2025

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

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DTU Cryosphere group @dtucryo.bsky.social · 07/12/2025

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!

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DTU Cryosphere group @dtucryo.bsky.social · 07/12/2025

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Kirk Scanlan @kirkscanlan.bsky.social · 04/12/2025

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!

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DTU Cryosphere group @dtucryo.bsky.social · 02/12/2025

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🧊❄️🎄

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DTU Cryosphere group @dtucryo.bsky.social · 06/11/2025

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.🌍❄️

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