Sea Level Through a Porthole (2025)
#ArcticCircle #ArcticOcean #Atmospheric/oceanIndicators #Biology #Biomass #Biosphere #CarbonSink #ClimageChange
5 new pictures and 6 new videos from NASA (SVS) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=26&user=OptimusPrimeBot&ilshowall=1&offset=20250328130041
Nancy Université, France recruits a professor in #ForestEcophysiology . Submissions open until 4 April. #TreePhysiology research is about temperate #Forests functioning and how #ClimateChange influences their #CarbonSink capacity.More information about this #JobOffer and the research unit in which he will be based at https://silva.nancy.hub.inrae.fr/nos-offres/cdd-cdi/professeur.e-en-ecophysiologie-forestiere
Please #Share in your #AcademicNetworks
#PlantScience #SciJobs #Vacancy #JobVacancy #JobOpening #JobOpportunity #ResearchJobs #Academia @academicchatter 1/3
"Arctic Climate Collapse! This time it's REALLY flipped!!" - Just have a Think
Finnish forests are shifting from carbon sink to carbon source.
New studies show they’re now emitting more CO₂ than they absorb. Why? Climate change, land use, and ecosystem shifts may be key factors.
What does this mean for carbon neutrality goals? Can better monitoring and policy interventions help?
Read more: https://buff.ly/4hNGl1p
#FYI #PaulBeckwith video lecture and literature review
"Instead of being a strong sink of carbon, pulling vast amounts of CO2 out of the atmosphere, a large chunk of the Arctic region is no longer doing this. Instead, it has become a source of carbon (CO2) which is very concerning."
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
A third of the Arctic’s vast #CarbonSink now a source of #emissions, study reveals
"For millennia, #Arctic land ecosystems have acted as a deep-freeze for the planet’s carbon, holding vast amounts of potential emissions in the permafrost. But ecosystems in the region are increasingly becoming a contributor to global heating as they release more CO2 into the atmosphere with rising temperatures."
Concerning productivity of US Forests : Hoagan et al. found that
"adverse effects of climate change appear to overwhelm any positive drivers in the water-limited forests of the western United States, whereas forest maturation and positive responses to age-independent drivers contribute to eastern US carbon sinks."
This highlights the vulnerability of the #Forests #CarbonSink to #ClimateChange
And what are the predictions for the Eastern #USA in terms of precipitations ?
https://www.pnas.org/doi/abs/10.1073/pnas.2311132121
The Great Dismal Swamp Has Released Millions Of Tons Of Carbon Since The Colonial Era, Research Finds
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https://www.whro.org/environment/2024-11-08/the-great-dismal-swamp-has-released-millions-of-tons-of-carbon-since-the-colonial-era-research-finds <-- shared article
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https://doi.org/10.1029/2024JG008137 <-- shared paper
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#GIS #spatial #mapping #climatechange #GreatDismalSwamp #carbon #NorthCarolina #Virginia #USA #engineering #water #hydrology #swamp #habitat #biodiversity #humanimpacts #carbondioxide #landuse #change #wetlands #peatlands #carbonsink #methane #model #spatialanalysis #spatiotemporal #research #peat #peatswamp #drainage #ditches #engineering #reclamation #peatfire #mitigation #ecosystem #carbonloss #hydrospatial
Welp... "Arctic tundra is now emitting more carbon than it absorbs, US agency says"
Two things about this —
- Under the incoming (Orange Menace) administration will NOAA continue to report on climate change or will it be censored (and all mention of climate change erased)?
- Obviously, losing the Arctic tundra as a carbon sink is very bad.
https://www.theguardian.com/world/2024/dec/10/arctic-tundra-carbon-shift
#ClimateChange #ClimateCrisis #Arctic #NOAA #CarbonSink
Finland underestimated emissions from logging, much sharper cuts needed
#carbonsink #finland #climate #forestindustries
https://yle.fi/a/74-20130076
Important piece in the puzzle #RCPcollapse
https://www.nature.com/articles/s41893-020-00603-4
or https://trophiccascades.forestry.oregonstate.edu/sites/default/files/Hayek2021.pdf ,
"The carbon opportunity cost of animal-sourced food production on land" #Hayek et al 2021
When all animal pasture and crop land currently in use for animal agriculture are rewilded, the process removes a total of
358 to 743 GtCO2 from the atmosphere by year 2050.
-743 Gt CO2, that's the theoretical equivalent of 0.5°C. ^^
The CO2 removal is based on the biomes originally covering the land nowadays in use for animal agriculture.
Ecosystem soil and litter could remove an additional 225GtCO2, "but this estimate is highly uncertain".
Albedo changes were not included in their modelling; but they say, regrowth of temperate forest systems increase temperature locally – but globally, they net cool despite albedo loss.
"Carbon uptake saturates after around 25 years for tropical forests
and around 30 years for temperate forests." Good to know. I had guesstimated this takes 60 years.
From what I can see, they computed only the rewilding process, not the CO2-equivalents GHG emissions like CH4 and NO2.
But reductions in those are maybe balanced by increased microbe activity via changes in hydrological cycle. So I won't bet on additional temperature decrease from them.
My proposed #RCPcollapse scenario research has to include rewilding in all the settlements and agriculture land in the highly tech-dependent societies, and in cities in all societies.
Also, outgassing from land and ocean once CO2 concentration drops reduces the effective atmospheric drawdown from 743Gt to 558Gt CO2.
Still -0.4°C.
-0.4°C within 30 years or so.... from the end to animal agriculture alone.ß!
Shocking. But to remind myself: from 2005 to 2020, global °C rose by 0.4°C.
Unprecedented changes in Antarctica ice prompt researchers to issue emergency statement
Hundreds of polar researchers issue an emergency statement calling for urgent action to deal with the impacts of climate change in Antarctica.
#ThickTrunkTuesday
Gnarly #OldGrowth #GarryOak tree.
I see a wise face on this ancient, majestic garry oak