💧🌏 Greg CocksJan 29
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
Denise GutzmerOct 15

Australia's rainforests are the first to switch from carbon sink to carbon source, study warns

The trunks and branches of trees in Australia's tropical rainforests—also known as woody biomass—have become a net source of carbon dioxide to the atmosphere, according to a new international study.

According to the team behind the Nature study, which includes experts from The Australian National University (ANU), Australia's wet tropics are the first globally to show this response to climate change. The rising temperature, air dryness and droughts caused by human-driven climate change are likely the major culprits.

#Rainforest #Australia #carbonsink #carbonsource #drought

https://phys.org/news/2025-10-australia-rainforests-carbon-source.html

Australia's rainforests are the first to switch from carbon sink to carbon source, study warns

The trunks and branches of trees in Australia's tropical rainforests—also known as woody biomass—have become a net source of carbon dioxide to the atmosphere, according to a new international study.

Phys.org
PLOS BiologyJul 31, 2025
What is the role of extracellular polymeric substances (EPS) in carbon exchange among microbial species? This study shows that #EPS, formed via #chitin degradation, drives #MicrobialDiversity by acting as a sequentially degraded #CarbonSource @PLOSBiology https://plos.io/3J9kbuu
Ivi ChocJan 24, 2025

#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."

https://www.youtube.com/watch?v=QE8waSYHFL4

#climate #ClimateScience #climatechange #ClimateEmergency #ClimateCrisis #ClimateBreakdown #climatecatastrophe #globalWarming #globalHeating #CarbonSink #CarbonSource #Arctic #BorealRegion

One-third of Arctic Boreal Region is Now a SOURCE of Carbon instead of a SINK

YouTube
💧🌏 Greg CocksJan 23, 2025

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

After millennia as CO₂ sink, more than one-third of Arctic-boreal region is now a source

After millennia as a carbon deep-freezer for the planet, 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 study published in Nature Climate Change.

Phys.org
💧🌏 Greg CocksFeb 14, 2024
Trends In Satellite Earth Observation For Permafrost Related Analyses—A Review
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https://doi.org/10.3390/rs13061217 <-- shared review paper
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#GIS #spatial #mapping #satellite #remotesensing #permafrost #degradation #thaw #thermokarst #climatechange #Arctic #environment #risk #hazard #erosion #coastline #coastal #engineeringgeology #geomorphology #geomorphometry #massmovement #hillslope #dynamics #hydrology #water #literaturereview #reviewpapers #researchreview #spatialanalysis #spatiotemporal #change #greenhousegas #emissions #carbonemissions #carbonsource #merlin #sentinel #earthobservation
Trends in Satellite Earth Observation for Permafrost Related Analyses—A Review

Climate change and associated Arctic amplification cause a degradation of permafrost which in turn has major implications for the environment. The potential turnover of frozen ground from a carbon sink to a carbon source, eroding coastlines, landslides, amplified surface deformation and endangerment of human infrastructure are some of the consequences connected with thawing permafrost. Satellite remote sensing is hereby a powerful tool to identify and monitor these features and processes on a spatially explicit, cheap, operational, long-term basis and up to circum-Arctic scale. By filtering after a selection of relevant keywords, a total of 325 articles from 30 international journals published during the last two decades were analyzed based on study location, spatio-temporal resolution of applied remote sensing data, platform, sensor combination and studied environmental focus for a comprehensive overview of past achievements, current efforts, together with future challenges and opportunities. The temporal development of publication frequency, utilized platforms/sensors and the addressed environmental topic is thereby highlighted. The total number of publications more than doubled since 2015. Distinct geographical study hot spots were revealed, while at the same time large portions of the continuous permafrost zone are still only sparsely covered by satellite remote sensing investigations. Moreover, studies related to Arctic greenhouse gas emissions in the context of permafrost degradation appear heavily underrepresented. New tools (e.g., Google Earth Engine (GEE)), methodologies (e.g., deep learning or data fusion etc.) and satellite data (e.g., the Methane Remote Sensing LiDAR Mission (Merlin) and the Sentinel-fleet) will thereby enable future studies to further investigate the distribution of permafrost, its thermal state and its implications on the environment such as thermokarst features and greenhouse gas emission rates on increasingly larger spatial and temporal scales.

MDPI
Ruth MottramAug 25, 2023

Beautifully illustrated but devastating piece on the transition of the #Amazon rainforest from carbon sink to carbon emitter from @nature

#ClimateChange #Carbon #CarbonSink #CarbonSource #Tropical forest #Rainforest #ClimateDiary

https://www.nature.com/immersive/d41586-023-02599-1/index.html

"We are killing this ecosystem": the scientists tracking the Amazon's fading health

Climate change, deforestation and other human threats are driving the rainforest towards a tipping point of sustainability. Researchers are racing to chart the Amazon’s future.