Anneke Vries

Who found my other mitten? #OSM26

This work is the second paper of my PhD — huge thanks to my co-authors Lorenz Meire, Kristin Schulz, John Mortensen, Michiel van den Broeke, and Willem Jan van de Berg! 🎓🙌

@jgroceans.bsky.social

#Greenland #Fjords #Oceanography #Glaciology #ClimateScience

Key findings:

🔥 Summer: Most heat flows toward glaciers, concentrated in the upper 150 m thanks to subglacial discharge.
🌀 Winter: Circulation is surprisingly strong but more 3D than in summer.
➡️ Two distinct winter inflow events: one cold & deep, one relatively warm!

What makes the data cool:

1️⃣ Most previous observations are summer-only, when fjords are easiest to access.
2️⃣ Our velocity measurements cover almost the full water column — rare in Greenland fjords.
3️⃣ Combining moorings and monthly transects: a high temporal AND spatial resolution.

Did you know Greenland fjord waters aren’t just heating up in summer… they can stay surprisingly warm in winter too? 🥵🇬🇱

We published a study with a full-year dataset from Greenland fjords, disentangling velocity patterns, heat transport, and mixing across all seasons. ☀️❄️

doi.org/10.1029/2025...

Chart of the study area

Concept diagram showing the main fjord inflow patterns by season

Greenland's fjords are pathways for exchange of heat and freshwater between the continental shelf and outlet glaciers of the Greenland Ice Sheet. Vries et al., present year-round water column velocity observations for Nuup Kangerlua in SW Greenland 🌊

agupubs.onlinelibrary.wiley.com/doi/10.1029/...

📊 We find that the ratio of how much glaciated areas melt versus how much accumulation they receive is a good predictor for how important solid ice discharge as a freshwater source is in a region.

📖 Want to know more? Read here: tc.copernicus.org/articles/19/...

Seasonal and interannual variability in freshwater sources for Greenland's fjords Abstract. The magnitude, source, release location, and timing of freshwater that ends up in the numerous Greenland fjords is of special interest for ice–ocean interactions and ecosystems. In this stud...

🌨️ Before the melt season, seasonal snow melt can actually be the largest source of freshwater.

🧊 In the northwest and southeast of Greenland, solid ice discharge (e.g., calving icebergs) is the biggest contributor throughout the year.

Seasonal and interannual variability in freshwater sources for Greenland's fjords Abstract. The magnitude, source, release location, and timing of freshwater that ends up in the numerous Greenland fjords is of special interest for ice–ocean interactions and ecosystems. In this stud...

🔬 In our research, we quantified and analyzed where the freshwater components entering fjords come from.

❄️ We find that in June-August, meltwater runoff from the ice sheet is the most important source of freshwater in Greenland's fjords (with regional differences).

🌊 Freshwater in Greenland fjords matters for ecosystems, i.e., plankton blooms. Also, fjords can mix freshwater before it is exported to the shelf seas, where it might or might not impact large-scale ocean circulation, such as the Atlantic Meridional Overturning Circulation (AMOC).

Seasonal and interannual variability in freshwater sources for Greenland's fjords Abstract. The magnitude, source, release location, and timing of freshwater that ends up in the numerous Greenland fjords is of special interest for ice–ocean interactions and ecosystems. In this stud...

Last week I published my first PhD paper on the sources of freshwater for Greenland's fjords (tc.copernicus.org/articles/19/...)

Seasonal and interannual variability in freshwater sources for Greenland's fjords Abstract. The magnitude, source, release location, and timing of freshwater that ends up in the numerous Greenland fjords is of special interest for ice–ocean interactions and ecosystems. In this stud...

✨ Very happy to share my first author publication for my PhD was published yesterday! ✨

"Seasonal and interannual variability in freshwater sources for Greenland's fjords" in The Cryosphere (tc.copernicus.org/articles/19/...)

On the train home from Vienna to Utrecht, I'm finishing my map I made during a short course "Scientific Worldbuilding" by @geologytalk.bsky.social at #EGU25.

It was great to 'map out' my PhD so far (: . I'm still looking for a name of this island. Any thoughts?

Can I join too? And do you know of a starterpack for fjords/ Subpolar North Atlantic?

Happy to have presented my poster yesterday at #EGU25 ✨

Missed it? Check it out here!

📊 Also there are some cool posters, and mine 😉, on Monday morning for Session CR2.5.

☕️ Just enough time to pick up your morning coffee and head with a fresh head to Hall X5!

On Monday and Tuesday morning, I'm co-convening a ***NEW*** session on 'Advances at the ice-ocean interface', with orals in room L3 on Tuesday. We have talks on e.g. fjord observations in the Northern Hemisphere and models of fjord, both complex and simple!

@egu.eu @egu-cr.bsky.social #egu25

Dit gaat dus echt helemaal de verkeerde kant op. Een wetenschappelijk instituut dat geen wetenschappelijk onderbouwde antwoorden meer kan/mag geven.

Paniek bij klimaatonderzoek door Trump: 'Alles weer opbouwen duurt 10 jaar' Pagina's op zwart, projecten op pauze en een contactverbod: klimaatwetenschappers verkeren in paniek, met name wat er bij het Amerikaanse weer- en klimaatonderzoeksinstituut NOAA gebeurt.

nos.nl/l/2555921 Paniek bij klimaatonderzoek door Trump: 'Alles weer opbouwen duurt 10 jaar'

🤯 Only one more day to submit to our new session at #EGU25 !

🌊 ❄️Are you working on fjords or marine-terminating glaciers?

✍ 💻 Submit to CR2.6 at EGU2025: Observing and modelling glacier-fjord interactions! 🐳🦐🎣🛶

‼️Deadline? 15 January 2025
✅ When? 27 April–2 May 2025
✅ Where? Vienna or virtual
✅ How? edu.nl/jndhq

#EGU2025
@icymatters.bsky.social