Lightnews — Scholar-powered news

Dr Heïdi Sevestre @drheidisevestre.bsky.social · 10d

8/ This is the heart of why we go. To share the wonder, to inspire, and to show that science belongs to everyone. 🌍❄️

Dr Heïdi Sevestre @drheidisevestre.bsky.social · 10d

7/ 👉 Teachers, parents, curious minds: sign up now & be part of the journey. Link here: 8e999342.sibforms.com/serve/MUIFAH...

Inscriptions UNDER ANTARTICA

8e999342.sibforms.com

1 3

Dr Heïdi Sevestre @drheidisevestre.bsky.social · 10d

6/ None of this would be possible without our partners:
@unesco.org
, Fondation Etrillard, Fondation Alphonse Weicker. 🙏

1

Dr Heïdi Sevestre @drheidisevestre.bsky.social · 10d

5/ But this program is not just about receiving content. It’s about exchange.
💬 Schools will send us questions directly.
🎥 We’ll host live calls from Antarctica.
🐧 Paco the penguin will guide the youngest explorers!

1

Dr Heïdi Sevestre @drheidisevestre.bsky.social · 10d

4/ 📚 Every week (from Nov 12), a digital workbook will land in inboxes worldwide — stories, games & activities linking geography, history, climate & biodiversity to our mission.

1 1

Dr Heïdi Sevestre @drheidisevestre.bsky.social · 10d

3/ That’s why, with Temoins Polaires, we’re launching the ❄️ Under Antarctica Educational Program ❄️. For 3 months, children, teachers & families will follow us for free as we kite-ski across the ice.

1

Dr Heïdi Sevestre @drheidisevestre.bsky.social · 10d

2/ One of the main reasons
Matthieu Tordeur and I are undertaking this enormous expedition is not just for science, but to open its doors to young people everywhere. To spark curiosity & rebuild trust in science.

1

Dr Heïdi Sevestre @drheidisevestre.bsky.social · 10d

1/ ❄️ Antarctica is calling — and we want to bring the next generation with us.

1 11

Reposted by Dr Heïdi Sevestre

Valérie Masson-Delmotte @valmasdel.bsky.social · Jun 19

Bonjour,

Avec 60 scientifiques de 54 institutions et 17 pays, nous avons réactualisé le suivi des indicateurs clés du changement climatique et de l'influence humaine jusqu'à fin 2024,
1/...

7 330 470

Reposted by Dr Heïdi Sevestre

Zack Labe @zacklabe.com · May 7

My collection of monthly #Arctic temperature graphics have just been updated through April 2025: zacklabe.com/arctic-tempe...

#DataViz #SciComm #OpenScience #OpenData

Graph showing monthly-mean Arctic mean near-surface air temperatures for 2025 using a red line. There is a strong seasonal cycle, with a peak during the boreal summer season. There is a long-term warming trend. The other years from 1940 to 2024 are shown with sequential coloring for blue to white. Data is from ECMWF ERA5 reanalysis. The graphic is updated through April 2025.

8 59

Dr Heïdi Sevestre @drheidisevestre.bsky.social · May 7

thanks so much Bethan!!

1

Reposted by Dr Heïdi Sevestre

Valérie Masson-Delmotte @valmasdel.bsky.social · May 5

Quel devrait être le scénario de montée du niveau de la mer pour guider l'adaptation du littoral 🇫🇷 de manière cohérente avec la trajectoire de référence pour l'adaptation au changement climatique anticipant 3°C de réchauffement mondial soit 4°C en France d'ici 2100 ?

1/...

5 80 160

Reposted by Dr Heïdi Sevestre

Zack Labe @zacklabe.com · Mar 24

Now looking at a spatial view of temperature anomalies during the December to February 2025 period again highlights the relative Arctic warmth and lack of cold departures to be found anywhere outside of the central Pacific.

Data information at (NASA/GISS GISTEMPv4): data.giss.nasa.gov/gistemp/faq/

Global map showing surface air temperature anomalies for the December 2024 to February 2025 period. Most all areas are warmer than average, except for La Nina. Anomalies are calculated in reference to a 1951-1980 climate baseline using GISTEMPv4.

2 60 140

Dr Heïdi Sevestre @drheidisevestre.bsky.social · Mar 24

Please do join us if you are interested James!! Would be so nice to have you :))

1

Dr Heïdi Sevestre @drheidisevestre.bsky.social · Mar 24

We are also looking for dedicated local volunteers to join us leading to UNOC3 and also to join the Cryosphere Pavilion team in Nice. If you know students and young professionals who would be interested, please share this opportunity with them!

docs.google.com/document/d/1...

Call for volunteers UNOC3

Call for Volunteers for the Cryosphere Pavilion UNOC3 conference Are you a young professional, university student, or early-career scientist passionate about climate change and the cryosphere? This is...

docs.google.com

3

Dr Heïdi Sevestre @drheidisevestre.bsky.social · Mar 24

We invite scientists, youth, indigenous representatives, artists, explorers, story tellers, NGOs, policy makers to propose side events that contribute to a diverse and inspiring program. Collaborative and creative sessions are strongly encouraged!

docs.google.com/document/d/1...

1 3

Dr Heïdi Sevestre @drheidisevestre.bsky.social · Mar 24

The 400m2 Pavilion will be located within the Green Zone space at the Palais des Expositions, Nice. The Pavilion can host an audience up to 80 participants per session. The Green Zone does not require special accreditation and is accessible to the general public.

docs.google.com/document/d/1...

Call for side events ENG

Call for Side Event Applications: The Cryosphere Pavilion at UNOC3 in Nice, France We are thrilled to announce that the Cryosphere Pavilion side event application process for UNOC3 in Nice, France (2n...

docs.google.com

1

Dr Heïdi Sevestre @drheidisevestre.bsky.social · Mar 24

We seek to highlight the people dedicated to the study, exploration and preservation of the cryosphere while inspiring the need for in its preservation.

The Cryosphere Pavilion aims to celebrate the International Year of Glaciers Preservation 2025 and the Decade of Action for Cryospheric Sciences.

1

Dr Heïdi Sevestre @drheidisevestre.bsky.social · Mar 24

We are thrilled to announce that the Cryosphere Pavilion side event application process for UN Ocean Conference in Nice is now open!

▶️ docs.google.com/document/d/1...

The Pavilion funded by the Fondation Albédo pour la Cryosphère is on a mission to bring the cryosphere’s message to the world.

2 2 11

Dr Heïdi Sevestre @drheidisevestre.bsky.social · Feb 27

Rain in the northernmost city on Earth. This month temperatures have been almost always above normal.

The Arctic is becoming totally unrecognisable.

And in the meantime #BP and #Equinor are doubling down on fossil fuels.

Profits over people. Profits over a liveable Earth.

2 30 35

Reposted by Dr Heïdi Sevestre

Ariel Waldman @arielwaldman.com · Feb 23

Stand Up For Science protest happening on Friday, March 7.

Happening in many cities across the U.S.

Details: standupforscience2025.org

STAND UP FOR SCIENCE

March 7, 2025. Washington DC and Nationwide. Because Science is for everyone.

standupforscience2025.org

35 61

Dr Heïdi Sevestre @drheidisevestre.bsky.social · Feb 11

1000000000% agree.

Jeremy Bassis @bassisjeremy.bsky.social · Feb 10

I can't believe I keep getting asked about this. We already know that geoengineering will not play any meaningful role as a climate solution and is extremely risky.

Scientists have some out-of-the-box ideas to save the ice caps

Scientists say glacier engineering could be a potential stopgap as the Earth passes a critical climate milestone. Others aren’t as convinced

www.independent.co.uk

15

Reposted by Dr Heïdi Sevestre

Zack Labe @zacklabe.com · Feb 9

A look at how #Arctic sea ice responded to the recent southerly flow of excessive heat and moisture. This same event resulted in the sudden anomalous temperature spike around the North Pole...

Data is from the 3-km AWI SIC-LEADS algorithm using AMSR2 satellite.

3 33 110

Dr Heïdi Sevestre @drheidisevestre.bsky.social · Feb 6

4/4
Massive thanks to the brilliant team behind this project:

🎬 Directors: Lucile Fonseca & Tristan Boudazin
🎞️ Editing: Tristan Boudazin
🎨 Motion Design: Ophélie Cohen, Nicolas Urbaniak
🎶 Sound: Virieux Labodesondes Ludovic

Special thanks to my brother Mael Sevestre & his dream team! 💙

4

Dr Heïdi Sevestre @drheidisevestre.bsky.social · Feb 6

3/4
Now, we’re bringing this adventure to you through a 13-minute film—a deep dive into the heart of the Greenland Ice Sheet, where exploration, science, and sustainability meet.

🎥 A film by imagerie-films.fr, produced by Airbus Solutions and 90 degrees south.

1 6