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.orghttps://bsky.app/profile/martinstendel.bsky.socialhttps://bsky.app/profile/martinstendel.bsky.social/post/3mpsx43u7uk24 [contains quote post or other embedded content]04 Jul 2026 11:23 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3mpsx43u7uk24https://bsky.app/profile/martinstendel.bsky.social/post/3mpbxlxesec2kArguably, the strongest heatwave ever observed in Europe. The map shows maximum temperatures in Denmark on Saturday, 27 June 2026. New all-time records in Ødum and Odense (37.0°C), shattering the old June record (35.5°C, 1947) as well as the old all-time record (36.4°C, 1975). Map: meteorolog.dk.27 Jun 2026 17:16 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3mpbxlxesec2khttps://bsky.app/profile/martinstendel.bsky.social/post/3mp3zqtxavc22A tropical night (minimum temperature above 20°C) rarely occurs at low altitude stations in central Europe, but for Sněžka / Śnieżka (Schneekoppe), at 1603 m the highest mountain in the Sudetes on the border between Poland and the Czech Republic, it is truly extreme! Forecast by the German model.25 Jun 2026 08:39 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3mp3zqtxavc22https://bsky.app/profile/martinstendel.bsky.social/post/3momxevxhwc2iAnimated forecast from @ecmwf.int showing 500 hPa geopotential anomalies for the next 15 days. Very stable Ω blocking over central Europe with "cold feet" west and east of it. For large parts of Europe this means a strong heat wave over the next two weeks.19 Jun 2026 08:46 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3momxevxhwc2ihttps://bsky.app/profile/martinstendel.bsky.social/post/3mnkj7fiits2oToday 177 years ago Denmark got a democratic constitution. Please, all, remember that we have something worth to defend! Now more than ever. Side note: arguably, Germans don't have many things to be proud of. I NEVER understood why Constitution Day is not a public holiday in Germany.05 Jun 2026 16:02 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3mnkj7fiits2ohttps://bsky.app/profile/martinstendel.bsky.social/post/3mji5ii5v4c2fThere's an easy way to find out if this is blasphemy or not. Crucify him and have a look on the third day.14 Apr 2026 19:47 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3mji5ii5v4c2fhttps://bsky.app/profile/martinstendel.bsky.social/post/3mjfta5vuhk24And the second strongest typhoon so early in the year. [contains quote post or other embedded content]13 Apr 2026 21:38 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3mjfta5vuhk24https://bsky.app/profile/martinstendel.bsky.social/post/3miiw5v3eic2nKann jemand helfen?02 Apr 2026 09:43 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3miiw5v3eic2nhttps://bsky.app/profile/martinstendel.bsky.social/post/3mgzhyrmvd22p3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196442881097566593344612847564823378678316527120190914564856692346034861045432664...14 Mar 2026 12:54 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3mgzhyrmvd22phttps://bsky.app/profile/martinstendel.bsky.social/post/3mf4nrd6kw22rFrom the coming weekend, winter is over in central Europe.18 Feb 2026 08:25 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3mf4nrd6kw22rhttps://bsky.app/profile/martinstendel.bsky.social/post/3mcss6ay6cc25Well, 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.19 Jan 2026 23:27 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3mcss6ay6cc25https://bsky.app/profile/martinstendel.bsky.social/post/3mcpwg3yzuk25En lille griner i en mørk tid18 Jan 2026 20:05 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3mcpwg3yzuk25https://bsky.app/profile/martinstendel.bsky.social/post/3mcoymwwjes25Kalaallit Nunaat Kalaallit pigaat (Greenland is the property of the Greenlanders)18 Jan 2026 11:12 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3mcoymwwjes25https://bsky.app/profile/martinstendel.bsky.social/post/3mbyx6vb7c226Cold winter weather in Europe is coming to an end on Monday.09 Jan 2026 16:47 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3mbyx6vb7c226https://bsky.app/profile/martinstendel.bsky.social/post/3mbwf45p2vk2pMap of the Epstein files08 Jan 2026 16:19 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3mbwf45p2vk2phttps://bsky.app/profile/martinstendel.bsky.social/post/3mblmnt23bs2aDen 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?".04 Jan 2026 09:34 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3mblmnt23bs2ahttps://bsky.app/profile/martinstendel.bsky.social/post/3maaypatfts2xTo cite the president whose name I cannot remember, closing down NCAR will be yet another step towards the United Sh*tholes of America. [contains quote post or other embedded content]18 Dec 2025 10:45 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3maaypatfts2xhttps://bsky.app/profile/martinstendel.bsky.social/post/3ma4bdcx2is23Finally, 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 https://www.carbonbrief.org/guest-post-how-the-greenland-ice-sheet-fared-in-2025/16 Dec 2025 13:37 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3ma4bdcx2is23https://bsky.app/profile/martinstendel.bsky.social/post/3m7utus4rak2jAfrica seen by African journalists. Highly recommended! [contains quote post or other embedded content]13 Dec 2025 14:47 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3m7utus4rak2jhttps://bsky.app/profile/martinstendel.bsky.social/post/3m73mhrrlg22mNew 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. https://polarportal.dk/en/greenland/mass-and-height-change03 Dec 2025 13:58 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3m73mhrrlg22mhttps://bsky.app/profile/martinstendel.bsky.social/post/3m4bccam2xk2yHurricane 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.28 Oct 2025 15:56 +0000at://did:plc:lddziphjhmep6bnsfevnmjps/app.bsky.feed.post/3m4bccam2xk2y