Our graphic shows Arctic sea-ice ridges aren’t just rubble—they’re biomass hotspots.
In summer, they can hold up to ~80–100% of ice-algal biomass despite covering much less area. Their complex structure creates diverse microhabitats for microbial life.
doi.org/10.1038/s432...
🎨 Frida Cnossen
A new EO manuscript is now available as a preprint on EGUsphere and open for discussion.
Koo, Y., Meier, W. N., and Stewart, J. S.: Uncertainty assessment of Antarctic sea ice motion product at the National Snow and Ice Data Center (NSIDC), EGUsphere [preprint], doi.org/10.5194/egus..., 2026.
Ein »dreckiger« Eisberg entpuppt sich als echte Insel: Deutsche Forschende haben im Weddellmeer ein 130 Meter langes Eiland entdeckt. Bislang ist es namenlos und in keiner Seekarte vermerkt.
Open for discussion
Shukla, S., Wouters, B., Veldhuijsen, S., de Roda Husman, S., Li, W., and Lhermitte, S.: A Physics-based Framework to Infer Firn Properties on Antarctic Ice Shelves from ASCAT Observations, EGUsphere [preprint], doi.org/10.5194/egus..., 2026.
New paper alert: 🌍🛰️
Y. Zhou et al., "Satellite Microwave Radiometry at L-Band for Monitoring Earth’s Essential Climate Variables: From Fundamental Physics to Sixteen Years of Global Climate Observations and Beyond," in IEEE Geoscience and Remote Sensing Magazine
ieeexplore.ieee.org/document/114...
My next 'climate viz of the month' blog is out, which provides some more background on new data challenges for sea-ice thickness/volume monitoring & summarizes the recent annual maximum sea-ice extent in the Arctic (record low): zacklabe.com/climate-viz-...
#SciComm #DataViz #OpenScience #OpenData
i don't agree that NASA is spreading disinformation. My amazing colleagues at NASA Earth science have worked so hard in such challenging times to keep this up. I want to thank them for their courage and grit. science.nasa.gov/climate-chan...
We are recruiting an Earth Observation System Architect at ESTEC. The role will prepare for the emerging AI/ML paradigm reshaping operational NWP and ocean prediction. What is the EO architecture to support these approaches?
Apply here: jobs.esa.int/job/Noordwij...
Closing date: 8 April 2026.
Im Interview spricht Prof. Hajo Eicken, neuer Leiter des @awi.de, über seine Vision einer ganzheitlichen Polarforschung – und warum wir dabei auch neue Perspektiven einbeziehen müssen.
Ganzes Interview: www.helmholtz.de/newsroom/art... #Polarforschung #Klimawandel #IndigenesWissen
How thick is the sea ice we are breaking with RV Kronprins Haakon? To get a good and continuous measurement of the sea ice thickness, we have now deployed an electromagnetic transmitter-receiver antenna from the ship’s bow. Read more: instagram.com/p/DWGznZwiB-J
📸 K. Kovacs, P. Itkin (NPI)
Today SMOS has surpassed ERS-2 to become the longest-operating ESA Earth observation satellite in orbit 🛰️🌍
16.38 years in space, congratulations 🎉
#Polar5 on the runway in Longyearbyen with the crew getting ready for the flight.
It's day 4 of #COMPEX and we already had two successful flights: one to Northwest with clouds over ice and one to Southeast sampling the contrast between clouds over the ocean and ice. 🧪 #remotesensing #AC3 #Svalbard
@unicologne.bsky.social @unileipzig.bsky.social @awi.de @esa.int
🚨 Zoom Talk 🚨
Thu 19th 4pm CET I present the results of the strain (tinyurl.com/2b6wxx5r) drain (arxiv.org/abs/2511.04820) & PISS (arxiv.org/abs/2601.07563) papers at the Peer-Community In Webinar series.
Info: peercommunityin.org/pci-webinar-...
Let's debate the future of publishing together!
NISAR SAR image over Antarctica.
Stunning and beautiful image from NISAR collected over Antarctica.
Taken from the recording of the recent town hall and data webinar. This is a great resource! Congratulations and thanks to ISRO and NASA!
youtu.be/7tJJmNg8qyE
Image description: orange buttons with "Open Access" text. Text reads: ''25 years of interactive open access publishing: An interview with current and former EGU Publications Committee chairs Barbara Ervens and Ulrich Pöschl''. Read Now.
This year, we celebrate 25 years of interactive #OpenAccess #publishing, with 20 interactive open access journals, more than 50,000 high-quality peer reviewed #scientific articles published, and 250,000 interactive comments and replies from the scientific community!
🧵Read more: egu.eu/3Z82VX
The world is getting hotter faster — its pace nearly doubled in the past decade
www.nature.com/articles/d41...
Greetings from Kyiv.
I came to the railway station to visit an exhibition — and instead saw this:
a concert by the State Emergency Service of Ukraine.
Wow. I want you to hear this.
Watch the livestream from R/V Sonne now!
MBARI scientists and engineers have joined an expedition led by the @marumunibremen.bsky.social to study the cold seeps offshore of Southern California.
www.youtube.com/live/IrJ1kVs...
Time series graph showing the Baltic Sea annual maximum ice extent in 1900-2026.
The sea ice extent in the Baltic Sea probably reached its maximum on 20 February 2026, when the extent was 181,000 km².
Based on the maximum, this was the most widespread ice cover in the Baltic Sea since 2011, and overall the 5th harshest ice winter in the 21st century.
The AMSR2 data since 2012 agrees upon the maximum. What is your data source for the long time period?
seaice.de/nh_Baltic_se...
Womöglich fällt es Merz und Reiche ja auf, wenn sie nun die Kriegsnachrichten vom Golf lesen, wie oft darin das Wortpaar "Öl und Gas" auftaucht. Huch, genau das Zeug, das sie die Deutschen noch viel länger verheizen lassen wollen! … – Mein Kommentar für @zeit.de
www.zeit.de/wissen/2026-...
Spotted them penguins 🤩
And here is the current position and track of RV Polarstern.
seaice.de/AMSR2_SIC-LE... (daily-updated)
By the way, you can currently spot a few penguins on the live camera from RV Polarstern. 🐧❄️😍 (Feb 24, 14:06)
The Panomax camera provides a high-resolution, interactive 360° view directly from the ship.
awi.panomax.com/180
#Antarctic 🌊
New paper alert 🪐🌍🧊🛰️
Bonnefoy, L. E., Prigent, C., Picard, G., Soriot, C., Le Gall, A., Kilic, L., and Jimenez, C.: Active-passive microwave scattering in the Antarctica wind-glazed region: an analog for icy moons of Saturn, The Cryosphere, 20, 1297–1314, doi.org/10.5194/tc-2..., 2026.
Photo showing a tall, jagged ice front of the Ronne Ice Shelf in West Antarctica rising above the calm surface of the Weddell Sea. Credit: Torsten Albrecht / PIK.
🔔🚨 New Publication Alert!
Research has shown that the Antarctic Ice Sheet is a climate tipping element.
We found: it’s not one — it’s many.
📄 Paper (open access): www.nature.com/articles/s41...
📢 Press release: www.pik-potsdam.de/en/news/late...
Tread below 🧵👇
