#tundra — Public Fediverse posts

Mapping Snow On Northern Winter Roads - A Dual-Frequency Polarimetric Radar Approach For Snow Characterization Over Land, Lake And Sea Ice
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https://doi.org/10.5194/tc-20-4367-2026 <-- shared paper
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H/T @Monojit Saha | Geospatial Analysis | Remote Sensing | Satellite Altimetry | Cryosphere
“Winter roads are essential transportation links for many remote northern communities, but their safety and reliability depend strongly on snow conditions and ice growth. In this study [link above], [the authors] evaluated a fully polarimetric, dual-frequency Ku- and Ka-band radar approach for retrieving snow depth across landfast sea ice, lake ice, and tundra.
Using field measurements near Churchill, Manitoba, and Resolute Bay, Nunavut [Canada], [they] found that the approach produced snow-depth retrieval bias and error within 3 cm over landfast ice, with encouraging Ku-band performance over frozen ground as well. [They] also developed an interface-detection approach for lake ice that can retrieve both snow depth and ice thickness - a promising direction for characterizing conditions relevant to winter-road planning and safety…”
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“Winter roads are lifelines for remote northern communities. Built over land, lakes, rivers, and sea ice, these travel routes are increasingly vulnerable to warming temperatures and variable precipitation. To ensure safety and adapt to these changes, operators require high-resolution monitoring of snow depth across these diverse surfaces, as natural snow accumulation dictates ice growth rates, route viability and road stability. This study extends our polarimetric radar method, previously demonstrated on pack ice, to landfast sea ice, tundra, and frozen lakes and assesses how well we can retrieve snow depth over these surfaces. Results indicate consistency with earlier sea ice analyses, maintaining a mean snow depth retrieval bias and error within 3 cm over the landfast ice. Promising performance is also found over frozen ground using Ku-band (mean biases less than 6 cm). To address the specific challenge of lake ice, which includes strong returns from the ice/water interface, we present a new interface-detection technique that simultaneously retrieves snow depth and ice thickness. While current validation focuses on undisturbed snow, this approach could provide a path forward for characterizing the cryospheric environment in a way that can directly support the optimization of winter roads…”
#Cryosphere #RemoteSensing #Snow #SeaIce #LakeIce #WinterRoads #characterisation #ArcticResearch #EarthObservation #PolarScience #maintainence #ploughing #winter #roads #transportation #northern #communities #mines #FirstNation #canada #remotesensing #polarimetric #radar #snowdepth #ice #landfastice #iceroad #tundra #Churchill #Manitoba #ResoluteBay #Nunavut #monitoring #planning #safety #trucking #freight

Who is served by this stupid #CarneyCon road across the #tundra through #caribou habitat? Not local people. Not Northern people? Maybe not even #Canadians. https://www.cbc.ca/news/canada/north/new-film-on-nunavut-megaproject-raises-concerns-about-caribou-and-the-people-who-hunt-them-9.7265941

#cdnpoli #corporateCapture #mining

Large-scale #TextureTuesday with an aerial view of frozen lakes and landscape of the north-eastern Canadian tundra, photographed during an intercontinental flight from Frankfurt in Germany to Seattle, Washington.

Best viewed large!

From my series "Over Ice & Mountains", on my website: https://www.alex-kunz.com/over-ice-mountains/

#LandscapePhotography #Aerial #Tundra #Texture #FromThePlane #FineArtPhotography #Landscape #Photography #Canada #Ice #Frozen #FrozenLandscape #AerialPhotography

Well, that's unusual (Toyota Tundra recall)

https://www.nhtsa.gov/?nhtsaId=26V320000

#toyota #recall #tundra

Sylarna the mountains next to Sylarna the fjällstation. Been there in worse weather.

#jämtland #hikingSweden #tundra #mountains

💁🏻‍♀️ ICYMI: 🦆❄️ Adult male King Eiders stand out with their powder-blue heads and orange shields.

These #ducks travel over 14,000 km (9,000 mi) annually and dive deep into freezing #Arctic waters for food. Protecting their Alaskan breeding grounds remains urgent as habitats face changes from development.

👉 Learn more: https://seethis.tv/post/king-eider-ducks-alaska-arctic-video?utm_source=mastodon&utm_medium=social&utm_campaign=new_content&utm_content=king-eiders

#alaska #animals #birds #conservation #ornithology #ecology #fossilfuels #government #law #habitats #migration #russia #tundra #usa #wetlands #tksst #video

🦆❄️ Adult male King Eiders stand out with their powder-blue heads and orange shields.

These #ducks travel over 14,000 km (9,000 mi) annually and dive deep into freezing #Arctic waters for food. Protecting their Alaskan breeding grounds remains urgent as habitats face changes from development.

👉 Learn more: https://seethis.tv/post/king-eider-ducks-alaska-arctic-video?utm_source=mastodon&utm_medium=social&utm_campaign=new_content&utm_content=king-eiders

#alaska #animals #birds #conservation #ornithology #ecology #fossilfuels #government #law #habitats #migration #russia #tundra #usa #wetlands #tksst #video

From WWF Canada on Bluesky:

Every year, migratory tundra caribou travel hundreds — sometimes thousands — of kilometres across the Arctic. These are the longest known terrestrial migrations on Earth. But the conditions that once made those journeys so effective are changing.

🔗 Read the full opinion piece.
https://nunavutnews.com/2026/04/08/opinion-canadas-migratory-caribou-are-under-threat-will-we-act-before-its-too-late/

#caribou #climatechange #arctic #environment #nunavut #canada #tundra #animals #endangered #climate #animals #politics #canpoli #quebec #ontario #migration

#UHH:
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Studie mit Hilfe von Klimasimulationen

Menschengemachter Klimawandel befeuert Mega-Brände in der Arktis
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".. Die extremen Feuerjahre von 2019 bis 2021 sind auf den menschengemachten Klimawandel zurückzuführen. .."

https://www.uni-hamburg.de/newsroom/presse/2026/pm11.html

26.3.2026

#Arktis #Arktisbrände #Brand #CO2 #Erde #Feuer #Klima #Klimakrise #Klimawandel #Taiga #Torf #Tundra

Here's some green (and red and brown) for St. Patrick's Day! A photo of mine of Mountain Cranberry, Crowberry, Alpine Bearberry, & Spruce Cone, Whitefish Lake, Northwest Territories, Canada. ©Carl R. Englander

#StPatricksDay #ThrowbackThursday #Tundra #NaturePhotography #Nature #Naturalist #Conservation #Outdoors #Photography #Biodiversity #Film #Velvia #Canada #Inuit #NWT #Barrenlands #Dene #Environment #Ecosystem #Ecology #Plants #PhotographersOfMastodon

❄️👅 From caribou to #Arctic #foxes, surviving the far north requires more than just thick fur.

Scientists are looking at the specialized #biology of the "#tundra tongue," a high-heat-exchange adaptation that keeps vital tissues warm and functional even when licking salt or eating frozen vegetation in sub-zero temperatures.

👉 https://arstechnica.com/science/2026/03/exploring-the-science-of-tundra-tongue/

#wildlife #science #nature #zoology #evolution #physics #animals

A perfect rainbow halo, caused by ice crystals floating in the atmosphere - a phenomenon that happens when it’s extremely cold. It was -50c in this scene #tundra #rainbow

I 25.000 laghi che costellano l’altopiano di Putorana, tetto irraggiungibile della Siberia
https://www.jacoporanieri.com/blog/?p=44000

#luoghi #dalmondo #viaggi #altopiano #paesaggio #russia #eurasia #geologia #esplorazione #laghi #fiumi #montagne #siberia #solitudine #natura #ecologia #animali #ecosistema #tundra #taiga #settentrione #artico

Integrating Characteristic Arctic Vegetation In A Land Surface Model Improves Representation Of Carbon Dynamics Across A Tundra Landscape
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https://doi.org/10.1029/2025JG009039 <-- shared paper
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[ https://doi.org/10.3390/land14091839 <-- shared paper ]
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#tundra #arctic #vegetation #spatialanalysis #arcticwarming #warming #climate #carbon #carbonsink #carbonsource #carbondynamics #carboncycle #EnergyExascale #earthsystemmodels #ESM #model #modeling #plant #functional #PFT #Alaska #Seward #Peninsula #casestudy #biomass #ecosystem #remotesensing #scaling #drone #aircraft #insitu #GIS #spatial #sampling #earthsystem

TUNDRA: Laugh Until It Hurts "TUNDRA is history's most successful self-syndicated newspaper comic strip and is seen in over 600 newspapers around the world." Sale: $4.99 to $1.99 by Chad Carpenter Rating: 4.6/5 (241 Reviews) #Tundra #Comics #GraphicNovels #Cartoons #Humor #Books #Kindle #BookSky

TUNDRA: Laugh Until It Hurts