@martinstendel.bsky.social
Senior Researcher, Danish Meteorological Institute Coordinator of PolarPortal (lots of up-to-date Arctic data) and ROPEWALK (huge Danish logbook digitization project) Conveying science to the public. Born @317 ppm. Mastodon @MartinStendel@fediscience.org
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Jeg blev født, da CO₂-koncentrationen var 317 ppm (parts per million). I dag er det 426 ppm.
From the coming weekend, winter is over in central Europe.
Come on. Do you really believe there will be fair midterms?!
Oh, you actually SAW them?
Well, I've seen the aurora in Greenland, Svalbard and Alaska, but never before in Copenhagen (even though I tried at least 30 times). But tonight, I was lucky. Between 22.15 and 22.30 not to the north, but rather almost above me.
These are the icy mountains of Pluto. It took 9 years to get these magnificent images… and 4.8 billion kilometers.
En lille griner i en mørk tid
Kalaallit Nunaat Kalaallit pigaat
(Greenland is the property of the Greenlanders)
If we are lucky.
The #PolarPortal seasonal report for 2024/2025 can now be downloaded. As always, in English, Danish and Greenlandic! See polarportal.dk/en/news/tran....
(Photo credit: @ruthmottram.bsky.social, DMI)
A Black man was killed by ICE (off duty) in Los Angeles on New Year’s Eve. And like Renée Good, he was an American citizen. But most people have not heard about Keith Porter.
I need y’all to realize this. Black people experience this lack of visibility all the time when it comes to being victims.
Cold winter weather in Europe is coming to an end on Monday.
New podcast:
Why does America want Greenland?
Resources, strategy and network cities
with @ruthmottram.bsky.social, @martinstendel.bsky.social, and Greenlander Anne Merrild
open.spotify.com/episode/66gW...
Map of the Epstein files
Den grønlandske regering har ikke brug for rådgivning, heller ikke fra mig.
Men ville man spørge mig alligevel, ville jeg anbefale at parkere en tankvogn fyldt med kerosin midt på runway i Nuuk hver nat. En flyver med marines, og det hele er forbi, før vi kan sige "f*ck, hvad er det?".
To cite the president whose name I cannot remember, closing down NCAR will be yet another step towards the United Sh*tholes of America.
Finally, here it is. Also this year, I have together with @ruthmottram.bsky.social commented on the fate of the Greenland Ice Sheet. Thanks for your patience, @carbonbrief.org. One of the highlights: 2024/25 was the 29th year in a row with net mass loss. See www.carbonbrief.org/guest-post-h...
Africa seen by African journalists. Highly recommended!
Have a safe trip and successful field work!
Thanks to our colleagues from #DTUSpace for preparing and providing the data!
And that's why there will be no midterms.
New GRACE data available on the Polar Portal. From April 2002 to July 2025, the Greenland Ice Sheet has lost roughly 5200 gigatonnes (=km³). This has contributed 1.5 cm to global sea level rise and would be enough to cover Denmark with 121 m of water.
polarportal.dk/en/greenland...
Hurricane Melissa, an extremely dangerous category 5 hurricane with a core pressure of 892 hPa (rank 3) and maximum sustained winds of 295 km/h (also rank 3) just before landfall on Jamaica's south coast. After crossing the island, it will also hit eastern Cuba. Note that one can see "down" the eye.
Not extremely convincing, but I managed to see comet Lemmon. All photos with my Samsung S22, night mode, three minutes exposure.
151 years and almost 9 months of daily maximum temperatures in Copenhagen, 1874-2025!
Green line: daily average
Light blue/orange: 10 and 90 percentiles
Blue/red: absolute lowest and highest maximum
Purple: values for 2025.
Grey: all other years
Warm mid-September exceeding the old record from 1947.
Trump just designated “Antifa” as a terrorist organization, on par with ISIS and Al Qaeda. As a reminder, “antifa” is short for “antifascist”.
They will use this lie to surveil, imprison, and kill Americans on the left.
This may be our Reichstag Fire moment. Wake up.
www.cnn.com/2025/09/17/p...
Mondfinsternis - Lunar eclipse - Måneformørkelse
Things were easier in 1954 when meteorologists still wore ties.
Accumulated surface mass balance (SMB) 1 Sep 2024 to 31 Aug 2025 was 403.8 Gt (=km³), close to the average 1980-2025. SMB is snowfall - runoff, i.e. always positive.
This is NOT the total mass balance TMB, which also includes iceberg calving and which shows ice loss for the 29th year in a row.