#blackcarbon — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #blackcarbon, aggregated by home.social.
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#SpaceDatacenters proposed by #Musk and #Bezos ‘catastrophic’ for planet, experts warn
New US petition demands review of plans from #TechCompanies amid fears of #EnvironmentalDestruction
Tom Perkins
Thu 23 Jul 2026Excerpt: "The number of active #satellites in orbit has grown exponentially from about 1,400 in 2015 to about 15,000 currently. As many as 100,000 are expected to be in orbit within the decade, not including the #datacenter networks. As of now, the bulk of the satellites’ pollution is thought to come from #Starlink and Amazon’s '#MegaConstellations' that provide broadband internet made up of about 10,000 satellites.
"Spacecraft can cause problems on their way up and down. Launches emit a range of emissions like #BlackCarbon, #NitrogenOxides, #CarbonMonoxide, #AluminumOxide, #ChlorineGases and, once in orbit, #mercury. When satellites are decommissioned five to 15 years later, they release metals as they vaporize. That’s injecting #pollutants into previously pristine parts of the #stratosphere, a highly sensitive system, and there’s very little understanding of the consequences."
Read more:
https://www.theguardian.com/science/2026/jul/23/space-datacenters-bezos-blue-originArchived version:
https://archive.ph/A9F07#ElonSucks #TechBros #BezosSucks #BigData #Datacenters #WorldPol #USPol #LEO #LowEarthOrbit #KesslerSyndrome #LightPollution
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We have a new publication on the calibration of #BlackCarbon monitors. We have done a systematic evaluation of almost all filter-based absorption photometers (FBAP) available vs. a photo-thermal interferometer (reference instrument).
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The Climate Change Culprits Not Addressed by Global Policy
Record-high global temperatures aren’t driven only by well-known greenhouse gas culprits. These other emissions, unlike carbon dioxide, don’t…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Environment #blackcarbon #BlackSoot #climatechange #globalwarming #Science #soot
https://www.newsbeep.com/us/702863/ -
The Climate Change Culprits Not Addressed by Global Policy
Record-high global temperatures aren’t driven only by well-known greenhouse gas culprits. These other emissions, unlike carbon dioxide, don’t…
#NewsBeep #News #Environment #blackcarbon #BlackSoot #ClimateChange #environment #globalwarming #Science #soot #UK #UnitedKingdom
https://www.newsbeep.com/uk/637466/ -
The Climate Change Culprits Not Addressed by Global Policy
Record-high global temperatures aren’t driven only by well-known greenhouse gas culprits. These other emissions, unlike carbon dioxide, don’t…
#NewsBeep #News #Environment #blackcarbon #BlackSoot #CA #Canada #climatechange #globalwarming #Science #soot
https://www.newsbeep.com/ca/734786/ -
✈️ Contrail cirrus are one of the main issues of aviation emission due to their positive radiative forcing. Researchers have found that sulfur and volatile organic compounds are the main cause of ice crystal formation – rather than soot as previously thought.
https://www.dlr.de/en/latest/news/2026/contrails-beyond-soot
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You can still submit your abstract to the International Aerosol Conference 2026 to take place in Xi'an, China.
Submission deadline has been extended to 15 March 2026 ℹ️
Join our session – B-6: Standardisation and traceability for the measurement of #BlackCarbon by means of optical methods ⚫
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🧑🔬 Our last publication from last year:
We put together tens of studies on the mass absorption cross section (MAC) of atmospheric #BlackCarbon aerosols. Large uncertainties in MAC values are mostly due to artifacts of the measurement techniques.
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Are you attending #EAC2025 next week?
Make sure you don't miss the BC Symposium, where I will be joining a panel of experts to discuss the challenges and perspectives of #BlackCarbon measurements -
We are glad to announce that we will be chairing a session at the 2026 International Aerosol Conference #IAC2026. The session will focus on the #standardisation and traceability of #BlackCarbon measurements using optical methods. I am happy to be doing this with my collaborators, Kostas Eleftheriadis and Yue Liu.
We look forward to receiving your contributions! 📄
http://www.iac2026.cn/?sid=3742&mid=954&v=100#!c/show/a/index/
Image credit: Samule Sun
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Fraser River feels the burn: Wildfires spiking pollutants and altering ocean carbon
#FraserRiver #BC #Canada #Wildfires #WaterPollution #HeavyMetals #ClimateChange #SalishSea #CarbonCycle #OceanHealth #RiverSystems #BlackCarbon #WildfireImpact
https://the-14.com/fraser-river-feels-the-burn-wildfires-spiking-pollutants-and-altering-ocean-carbon/ -
Just arrived to the Schneefernerhaus research station in Bavaria where we will install a couple of instruments to measure #BlackCarbon
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'Clear' demonstration that #Starship is using liquid CH₄ as a fuel (and not liquid H₂), given the black exhaust. #soot #blackcarbon
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The #IconOfTheSeas Is 250,000 Tons Of Floating #Carbon #Emissions Horror
According to the Environmental Protection Agency (#EPA), an average #cruiseship emits more #soot per day than 1 million cars. In fact, cruise ships make up just one percent of the world’s large boats, but account for more than six percent of the world’s #blackcarbon (soot) emissions.
https://jalopnik.com/the-icon-of-the-seas-is-250-000-tons-of-floating-carbon-1851189439 -
🚢 Interesting talk about the impact of #BlackCarbon shipping emissions in the Arctic.
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"The Ethics of Dust was, for me, about human presence made present – about the building rewritten as not only limestone and glass and a wood-beamed roof, or as big abstract nouns like history and tradition and power, but the material traces of millions of bodies, their labours and their livelihoods." https://www.theguardian.com/news/2023/aug/31/empire-of-dust-what-the-tiniest-specks-reveal-about-the-world re: #blackcarbon #Hygiene #microplastics et al.
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#Smoke by #wildfires may also be connected with #"Earth’s radiation budget through absorption of incoming shortwave radiation" with potentially underestimated effects [3]. "Wildfires emit large amounts of #BlackCarbon and light-absorbing organic carbon, known as #BrownCarbon, into the #atmosphere" and [3] suggests that "a type of dark brown carbon contributes three-quarters of the short visible light absorption and half of the long visible light absorption"
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Energy-storing supercapacitor from #cement, water, black carbon
Date: July 31, 2023
Source: MITSummary:
Engineers have created a 'supercapacitor' made of ancient, abundant materials, that can store large amounts of energy. Made of just cement, water, and carbon black (which resembles powdered charcoal), the device could form the basis for inexpensive systems that store intermittently #renewable energy, such as #solar or #wind energy."'The material is fascinating,' Masic says, 'because you have the most-used human-made material in the world, cement, that is combined with carbon black, that is a well-known historical material -- the Dead Sea Scrolls were written with it. You have these at least two-millennia-old materials that when you combine them in a specific manner you come up with a conductive nanocomposite, and that's when things get really interesting.'
"As the mixture sets and cures, he says, 'The water is systematically consumed through cement hydration reactions, and this hydration fundamentally affects nanoparticles of carbon because they are hydrophobic (water repelling).' As the mixture evolves, 'the carbon black is self-assembling into a connected conductive wire,' he says. The process is easily reproducible, with materials that are inexpensive and readily available anywhere in the world. And the amount of carbon needed is very small -- as little as 3 percent by volume of the mix -- to achieve a percolated carbon network, Masic says.
"Supercapacitors made of this material have great potential to aid in the world's transition to renewable energy, Ulm says. The principal sources of emissions-free energy, wind, solar, and #tidal power, all produce their output at variable times that often do not correspond to the peaks in electricity usage, so ways of storing that power are essential. 'There is a huge need for big energy storage,' he says, and existing batteries are too expensive and mostly rely on materials such as #lithium, whose supply is limited, so cheaper alternatives are badly needed. 'That's where our technology is extremely promising, because cement is ubiquitous,' Ulm says.
"The team calculated that a block of nanocarbon-black-doped concrete that is 45 cubic meters (or yards) in size -- equivalent to a cube about 3.5 meters across -- would have enough capacity to store about 10 kilowatt-hours of energy, which is considered the average daily electricity usage for a household. Since the concrete would retain its strength, a house with a foundation made of this material could store a day's worth of energy produced by solar panels or windmills and allow it to be used whenever it's needed. And, supercapacitors can be charged and discharged much more rapidly than batteries.
"There is a tradeoff between the storage capacity of the material and its structural strength, they found. By adding more carbon black, the resulting supercapacitor can store more energy, but the concrete is slightly weaker, and this could be useful for applications where the concrete is not playing a structural role or where the full strength-potential of concrete is not required. For applications such as a foundation, or structural elements of the base of a wind turbine, the 'sweet spot' is around 10 percent carbon black in the mix, they found.
"Another potential application for carbon-cement supercapacitors is for building concrete roadways that could store energy produced by solar panels alongside the road and then deliver that energy to electric vehicles traveling along the road using the same kind of technology used for wirelessly rechargeable phones. A related type of car-recharging system is already being developed by companies in Germany and the Netherlands, but using standard batteries for storage.
"Initial uses of the technology might be for isolated homes or buildings or shelters far from grid power, which could be powered by solar panels attached to the cement supercapacitors, the researchers say."
Full article:
https://www.sciencedaily.com/releases/2023/07/230731151603.htm -
🔥 Interested in long-term #fire reconstructions & #paleoecology? 🔥
Follow this group and mention it in your toots to quickly share content with like-minded folks:
@paleofire#wildfire #disturbance #ecology #geography #pyrogeography #archaeology #palynology #lake #marine #ice #soil #core #sediment #peat #dendrochronology #firescars #reconstruction #forest #proxy #geoscience #charcoal #biomarker #bpca #levoglucosan #pahs #pollen #carbon #blackcarbon #fireregime #holocene #wildfires #paleofire