Per rallentare lo scioglimento del #permafrost e ridurre il rilascio di anidride carbonica, l'azienda #ColossalBiosciences vuole ripristinare l'ecosistema della tundra artica.

Per farlo, useranno il genome editing per creare nuove specie di #elefanti resistenti al freddo, modificando il loro #DNA in modo che sia più simile a quello dei #mammut.

È di ieri la notizia della creazione dei primi topi lanosi, un primo passo in questa direzione.

Cosa pensi di questo progetto?

A serious geologic issue is occurring in Canada and Alaska.
https://www.youtube.com/watch?v=Lxfpgqn6NOo
#environment #climatechange #river #permafrost #melting #emergency #canada #alaska #unitedstates #usa

Der #Arktis-Report 2024 zeigt, dass die Region mittlerweile mehr #CO2 abgibt, als sie speichert. Ursachen sind schmelzender #Permafrost, steigende Temperaturen und häufigere #Waldbrände.

Die vergangenen neun Jahre waren die wärmsten seit Beginn der Messungen. Auch die #Tierwelt leidet. Die #Population der #Karibus ist um 65 % zurückgegangen.

Forschende fordern eine stärkere Einbindung indigener Gemeinschaften, um auf die rapide Veränderung zu reagieren.

https://repository.library.noaa.gov/view/noaa/66870

Segment Anything Model Can Not Segment Anything - Assessing AI Foundation Model’s Generalizability In Permafrost Mapping
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https://doi.org/10.3390/rs16050797 <-- shared paper
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#GIS #spatial #mapping #remotesensing #foundationmodel #AI #artificialintelligence #zeroshot #segmentation #GeoAI #spatialanalysis #LargeLanguageModel #LLM #SAM #performance #metrics #permafrost #visionmodel #icewedge #Arctic #warming #climatechange #thawslumps #landform #terrainmapping #EuroCrops #agriculture

As #permafrost melts into Alaska’s rivers, orange is the new blue: “a consequence of global warming as the melting permafrost released high levels of toxic metals into the river channels imparting the orange hues.” @GreenMatters #climatechange
https://www.greenmatters.com/pn/experts-reveal-why-alaskas-rivers-are-turning-bright-orange-and-its-more-serious-than-you-think

Groundwater in the Arctic is delivering more carbon into the ocean than was previously known

A relatively small amount of #groundwater trickling through #Alaska's #tundra is releasing huge quantities of #carbon into the #ocean, where it can contribute to #ClimateChange, according to new research out of The University of Texas at Austin.
As the tundra continues to thaw and the flow of submarine groundwater ratchets up, Demir said that the outflow of carbon from shore to sea could effectively make ocean surface waters a carbon source to the #atmosphere. The #CO2 released via groundwater could also contribute to ocean #acidification.
"The #Arctic coast is changing in front of our eyes," said Bayani Cardenas, a co-author of this study and professor at the Jackson School's Department of Earth and Planetary Sciences. "As #permafrost thaws, it turns into coastal and submarine #aquifers. Even without this thawing, our studies are among the first to directly show the existence of such aquifers."

https://phys.org/news/2025-01-groundwater-arctic-carbon-ocean-previously.html

#ClimateScience
#ClimateCrisis
#Cryosphere

Thanks to @cabinradio for this story. "The #NWT has some giant #carbon sinks – places within the landscape that lock up carbon like the #borealforest, #peatland and #permafrost. How we keep the carbon in those sinks is a big and increasingly important question, not just for the territory but for humanity as a whole." https://cabinradio.ca/220349/news/environment/wildfires/how-do-we-keep-the-nwts-huge-carbon-stores-out-of-the-air/

Permafrost Thaw Threatens Up To 3 Million People In The Arctic
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https://phys.org/news/2025-01-permafrost-threatens-million-people-arctic.html <-- shared technical article
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https://doi.org/10.1038/s43247-024-01883-w <-- shared paper
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#GIS #spatial #mapping #arctic #climatechange #permafrost #thaw #communities #impacts #humanimpacts #infrastructure #risk #hazard #northernhemisphere #global #threat #Sweden #greenland #alaska #yukon #russia #canada #norway #landuse #melting #ecosystems #livelihoods #firstnation #indigenous #inhabitants #population #cost #economics #policymaking #planning #management #spatialanalysis #adapation #transportation #supplies #waterquality #watersecurity #foodsecurity #disease #contaminants #multifactor #analysis #MFA #social #culture #cultural #transdisciplinary #ground #temperature #physicalprocesses #consequences #mobility #supplies #biogeochemical #water #hydrology #engineeringgeology #erosion #ecosystem #FATE

Oceanic Evasion Fuels Arctic Summertime Rebound Of Atmospheric Mercury And Drives Transport To Arctic Terrestrial Ecosystems
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https://doi.org/10.1038/s41467-025-56300-3 <-- shared paper
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#GIS #spatial #mapping #mercury #Hg #contamination #summerrebound #arctic #summertime #atmospheric #transport #contaminate #terrestrial #ecosystems #Hg0 #model #modeling #framework #spatialanalysis #spatiotemporal #concentrations #seaice #atmosphere #river #riverine #GDAS #GEOS #GEOSChem #MERRA2 #GTMM #global #NDVI #remotesensing #cycling #marine #ocean #water #hydrology #seawater #icemelt #anthropogenic #coast #coastal #tundra #permafrost #climatechange #evasion #vegetation #uptake #mitigation

An amazing image shown to us in a talk by Elliott Skierszkan of #CarletonUniversity . He is exploring the mobilization of metals into water from thawing permafrost. The XRF image shows uranium (pink, top right image) concentrated along the wall of a plant stem, found in a fresh core of permafrost mud. This uranium (sourced from bedrock) is then soluble in the pore water when the permafrost melts.

After Millennia As CO₂ Sink, More Than One-Third Of Arctic-Boreal Region Is Now A Source
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https://phys.org/news/2025-01-millennia-arctic-boreal-region-source.html <-- shared technical article
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https://doi.org/10.1038/s41558-024-02234-5 <-- shared paper
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#GIS #spatial #mapping #arctic #boreal #carbonsink #carbonsource #permafrost #melting #tundra #wetlands #forest #co2 #CO₂ #spatialanalysis #climatechange #fire #wildfire #carbon #carbonfootprint #carbondioxide #sampling #monitoring #model #modeling #spatialanalysis #spatiotemporal

"As temperatures get warmer, soils get warmer. In the permafrost, most of the soils have been entirely frozen throughout the full year. But now the temperatures are warmer, there’s more organic matter available for decomposition, and carbon gets released into the atmosphere. This is the permafrost-carbon feedback, which is the key driver here.”

#Arctic #Tundra #GlobalHeating #Carbon #Permafrost

https://www.theguardian.com/environment/2025/jan/21/third-of-arctic-carbon-sink-now-a-source-of-emissions-study?CMP=firstedition_email

"After millennia as a carbon deep-freezer for the , regional hotspots and increasingly frequent wildfires in the northern latitudes have nearly canceled out that critical storage capacity in the permafrost region, according to a new study published in Nature Climate Change". 

#climatechange #wildfires #permafrost
https://www.eurekalert.org/news-releases/1070978

"The Arctic is heating up particularly fast as a result of global warming—with serious consequences. The widespread permafrost in this region, where soils currently store twice as much carbon as the atmosphere, is thawing. Scientists are using increasingly detailed climate models to investigate what this means for the global climate and which striking feedbacks need to be taken into account".
#arctic #permafrost #climatechange #globalwarming

https://phys.org/news/2025-01-permafrost-climate-arctic-response-global.html

Permafrost in climate change: Models predict #Arctic 's response to global warming

When the #permafrost thaws, microorganisms begin to break down the material. This produces greenhouse gases: #CarbonDioxide (#CO2) or #methane, (#CH4) which has about 28 times the warming effect of CO2 on a time horizon of 100 years. These gases also escape from the ponds and lakes, where a lot of #carbon is decomposed as well.

https://phys.org/news/2025-01-permafrost-climate-arctic-response-global.html

#Cryosphere
#ClimateChange
#TippingPoint
#GlobalWarming

"The physical processes, hazards and societal consequences associated with permafrost thaw constitute risks that are perceived differently across the Arctic depending on the local context and place-dependent specificities. Understanding the complex nature of these risks is essential to support the resilience and adaptive capacity of Arctic communities."

https://phys.org/news/2025-01-permafrost-threatens-million-people-arctic.html

Este es el cráter Batagaika, en la República de Sakha (Rusia), el más grande causado por el colapso del suelo tras el deshielo del permafrost.

Su historia marca la famosa sinergia entre cambio climático y actividad humana en la que una desencadena el potencial de la otra.

¿Cómo?

Explicación

A 25-Year-Old #Insight About the First Billion Years of the #Cosmos : Medium

#NASA Helps Find #Thawing #Permafrost Adds to Near-Term #GlobalWarming : NASA

#Salt #Batteries are finally shaping up – that's good for the #Planet : New Sci

Check our latest #KnowledgeLinks

https://knowledgezone.co.in/resources/bookmarks