Lena Nicola

@ricarda-winkelmann.bsky.social ❄️🧊

📚 Hot off the press: The Polar Early Career World Summit Synthesis Report is now out! Published by @polarsecco.bsky.social and the APECS Directorate.

The voices of 238 early-career polar researchers share priorities for ICARP IV & IPY-5.

zenodo.org/records/1699...

Updated a classic.

❄️ Die POLARSTUNDE geht in eine neue Runde! ❄️
Ab dem 15.10. erwarten Sie spannende Vorträge rund um Polar- und Klimaforschung. 🌍🐧

📩 Anmeldung per Mail an polarstunde@polarforschung.de

@polarforschung.bsky.social

Have you heard of #AntarcticaInSync? A UNESCO-endorsed program for coordinated science in Antarctica & the Southern Ocean (www.antarctica-insync.org). We - APECS - aim to represent us early career scientists in the project 🙌🏼. You can find all FAQs on our new website: apecs-germany.de/antarctica-i...

Did your thesis focus on polar and cryosphere science? Show us what you researched – in a fun and creative video!

🎬 "Explain Your Thesis!" – APECS Germany & DGP’s new video competition
💸 Win up to €300
📅 Submit by October 1, 2025

Check out apecs-germany.de/explain-your... for more information!

Very thankful to my co-authors @pik-potsdam.bsky.social who helped see through this/these project(s) 🙌🙏

Bathymetry-constrained impact of relative sea-level change on basal melting in Antarctica Abstract. Relative sea level (local water depth) on the Antarctic continent is changing through the complex interplay of processes associated with glacial isostatic adjustment (GIA). This involves nea...

Using the same concept, in a follow-up study (Kreuzer et al), we explore how relative sea-level change can affect sub-shelf melting.
🌊 Sea-level shifts can alter ocean access to grounding lines
❄️ But its melt impact is small compared to climate-driven changes.
👉 tc.copernicus.org/articles/19/...

🔍 Several regions show gateway access

📈 We estimate upper bounds on melt rate increases if warm waters follow these paths into the ice-shelf cavities

Also: we update our PICO basin mask to better align with bathymetric access; you can find it in our Zenodo repository!
zenodo.org/records/1567...

Bathymetry-constrained warm-mode melt estimates derived from analysing oceanic gateways in Antarctica Abstract. Melting underneath the floating ice shelves surrounding the Antarctic continent is a key process for the current and future mass loss of the Antarctic Ice Sheet. Troughs and sills on the con...

🧊 New study in The Cryosphere!

We identify oceanic gateways that could channel warm water to Antarctic grounding lines, based on high-res bathymetry. These deep pathways could drive major ice-shelf melt when cavities switch from ‘cold’ to ‘warm’ melt conditions.

📄 doi.org/10.5194/tc-1...

Exciting year ahead for APECS Germany!
We’re happy to introduce our new Chair team for 2025/26: Lukas Monrad-Krohn will serve as Chair, supported by Co-Chairs Lena Nicola and Joana Steffens.
We’re looking forward to a great year with the polar early-career community!❄️☺️

Fig. 1 from paper (visual abstract)

You can now read our assessment, ideas and suggestions in our paper published in Journal of Glaciology, concerning questions such as: What kind of community do we hope to build over the next fifty years? What are current challenges and barriers? 🔍
Link: doi.org/10.1017/jog....

The list of authors include:
@bekkz.bsky.social @hofsteengemarte.bsky.social @florinaroana.bsky.social @nklsrchtr.bsky.social @maxencementhon.bsky.social @icymatters.bsky.social @mikebentley.bsky.social @lokeshjain.bsky.social @fpattyn.bsky.social
... and many more who I couldn't fiind on bluesky!

With the paper, we are not trying to say what everyone in our field agrees on, but rather here is what we, some 42 authors, agree on and what we, with our various kinds of influence, biases and backgrounds, can or could do about it.
Many thanks to my co-authors for their contributions and help 🙏

Fig. 1 from paper (visual abstract)

You can now read our assessment, ideas and suggestions in our paper published in Journal of Glaciology, concerning questions such as: What kind of community do we hope to build over the next fifty years? What are current challenges and barriers? 🔍
Link: doi.org/10.1017/jog....

Next to lectures on e.g. numerical modelling, polar meteorology or ice-ocean interactions, we also had the chance to reflect on how and by whom our science is done, and what role we, predominantly early-career researchers attending the school, play in shaping our community in the future. 💪

Picture of the Italian town of Karthaus

📣 New paper: Where do we want the glaciological
community to be in 2073?
Some context: The Karthaus summer school is an occasion where parts of our research community comes together — In 2023, I was lucky to participate myself and it was the year in which a new workshop was included in the program.

What is SMB? @PolarRES has these fantastic storyboards explaining key parts of the project. I suppose more wil be added later too.

https://polarres.github.io/Storyboards/smb

🚨 New paper alert! 🧪

🔥 How would heat extremes in Europe evolve under long-term net-zero emissions?

Find out in our ERL article, co-written with @andrewkingclimate.bsky.social and Tilo Tiehn

iopscience.iop.org/article/10.1...

Here’s a quick summary (1/n) 🧵

Scientists say next few years vital to securing the future of the West Antarctic Ice Sheet 03.06.2025 – Collapse of the West Antarctic Ice Sheet could be triggered with very little ocean warming above present-day, leading to a devastating four metres of global sea level rise to play out ove...

🚨📢 New Publication Alert

Our new study shows that the #WestAntarctic #IceSheet repeatedly crossed #TippingPoint thresholds in the past, with important implications for its future stability.

Press release: www.pik-potsdam.de/en/news/late...

Study: www.nature.com/articles/s43...

🌊🧊⚒️🧪🥼

⛰️ In a new study in @science.org, we project that 39% of the global glacier mass is committed to be lost irrespective of future warming.

However, a lot can still be saved - see title:
“Glacier preservation doubled by limiting warming to 1.5°C versus 2.7°C”

www.science.org/doi/10.1126/...

[1/n]

Esp northern hemisphere folks please share with your colleagues. It's really great down south and we don't get so many visitors! ❄️🇦🇶

Congratulations, such great news 👏🏼🎉

PROTECT just had its final review meeting, thank you everyone who contributed to the project!!

Discover our most impactful results:
- Scientific articles
- #SeaLevel projection tool
- #Policy briefs for decision makers
- #Educational resources
- #Art exhibition
- Webinars

👉https://protect-slr.eu

Here it is! 🎧🎤
Hat sehr viel Spaß gemacht über unsere Arbeit bei APECS Germany, die deutsche Polarforschung oder die UN Ozeandekade mit @ecop-dach.bsky.social zu quatschen!
(The podcast episode is in German only 🇩🇪🔈)

Lena Nicola & Joana Steffens: Pinguine, Polarforschung und APECS Germany Wellenbrecher · Episode

Listen to the latest episode of the Wellenbrecher podcast with our board members Lena and Joana! 🙂 open.spotify.com/episode/0mOt...

Wie können wir die #Zukunft der #Antarktis besser verstehen?
Zum 30. Jubiläum der @leibniz-gemeinschaft.de befragen wir 30 junge Forschende: @lenanicola.bsky.social promoviert am @pik-potsdam.bsky.social im Fach Klimaphysik.
www.leibniz-magazin.de/alle-artikel...
#30umdie30 #leibnizmagazin

@apecs-germany.bsky.social 🙌🏼

Also excited to meet up with my wonderful co-authors from the Karthaus‘23 batch to catch up and share our publication summarising and reflecting on the first-of-its-kind #EDI workshop from our summer school! 🤝

👉 Thurs, 01.05 14:00, Hall X1, H1.183

meetingorganizer.copernicus.org/EGU25/EGU25-...

All set for the #Train2EGU! Next week I will attend #EGU25 and present some work in progress of my PhD project 🙌🏼
Let’s talk about how we could study the impacts of heatwaves on Antarctic ice dynamics at my poster 🔥🧊

👉 Tues, 29.4, 14:00, Hall X4, X4.20
meetingorganizer.copernicus.org/EGU25/EGU25-...