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Carbon Cycle

1 news articles per week.
48 connected topics.


News and Opinion

Coverage of carbon cycle since June 16, 2021.

Guest post: How the Keeling Curve will need to bend to limit global warming to 1.5C

"...If the Paris Agreement target of limiting global warming to 1. 5C is to be met, this change in direction needs to begin within the next few years and the curve needs to stop rising before the middle of the century..."

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Elon Musk's $100-million Carbon Removal XPrize announces first winners

"...Skyrenu Technologies from Canada's Universite De Sherbrooke and Inrs-Eau Terre Environnement Research Centre hopes to use a direct air capture (DAC) system to solve two problems at once. These reactors are designed to remove CO2 from the ambient air, and the team's version funnels the high-concentration gaseous CO2 into a separate device where it combines with mine tailings to produce carbonated rocks for easy storage. It plans to install these directly at mine waste sites to minimize transport, and its first port of call will be abandoned asbestos mines in Quebec, hoping to reduce health hazards from the residue..."

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Ambitious Urban Sequoia skyscraper designed to clean the air around it

"..."This solution allows us to move beyond net zero to deliver carbon-absorbing buildings, increasing the amount of carbon removed from the atmosphere over time," says SOM. "After 60 years, the prototype would absorb up to 400 percent more carbon than it could have emitted during construction. The captured carbon can be put to use in various industrial applications, completing the carbon cycle and forming the basis of a new carbon-removal economy..."

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Tracked bottom-crawling robot gathers valuable deep-sea data

"...Although the deep ocean floor may seem isolated from life on the rest of the planet, it actually plays a vital role in the global carbon cycle. Scientists are now gaining a better understanding of that role, thanks to a tracked robotic underwater rover. Known as the Benthic Rover II, the deep-sea autonomous vehicle was designed by a team at the Monterey Bay Aquarium Research Institute (MBARI)..."

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Kelp’s Carbon Sink Potential Could Be Blocked by Coastal Darkening Hakai Magazine

"...The scientists found that because of the sunlight-blocking effect of particulate pollution, the darkest site received 63 percent less sunlight than the lightest one. The dearth of light meant that at the darkest site, the kelp’s primary productivity—the rate at which it converts energy from the sun into organic matter—was 95 percent lower. The kelps growing there accumulated two times less biomass..."

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Why the Belowground Ecosystem Matters

"...When it comes to forest ecosystem services, or natural benefits, trees often come to mind first: they provide aesthetics, air and water filtration, and habitat. But many of these processes begin belowground. Forests account for 25 percent of the world’s biomass, and the fine root systems of trees are responsible for 75 percent of forest biomass production..."

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Letter: ‘CO2 falsely accused, once again, by another UN/IPCC report'

"...“The IPCC has relied solely on computer climate models for its 30-year litany of failed doomsday scenarios,” writes Thorpe Watson. Photo: Elena Mozhvilo/Unsplash..."

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Extraordinary carbon emissions from El Nino-induced biomass burning estimated using Japanese aircraft and shipboard observations

"..."Our analysis is the first study that used in-situ high-precision observations for estimating the fire-induced emissions from Equatorial Asia for 2015, which contributes to improving our understanding of biomass burning in this region. It is considered that biomass burning here is dominated by fires in peatland, which has a remarkably high carbon density. Because Equatorial Asia has a significant amount of peatland, the region has a distinct role in the global carbon cycle despite its small terrestrial coverage", Yosuke Niwa (NIES & MRI), the leading author of the study, said..."

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Melting High Mountain Asia glaciers are revealed as a potential source of greenhouse gases

"...According to Dr. Yulan Zhang, the investigator who led the study: "Until now, there were no estimates on the potential climate change caused by greenhouse gas emissions from cryosphere melting in High Mountain Asia. Determining how these data are coupled with biogeochemical models, including feedback between the glacial cryosphere and atmosphere, is required to test the sensitivity of carbon sinks or sources to changes in the terrestrial cryosphere..."

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Arrival of land plants changed Earth's climate control system

"...First author Boriana Kalderon-Asael, a PhD student at Yale University, said: "By measuring lithium isotopes in rocks spanning most of Earth's history, we aimed to investigate if anything had changed in the functioning of the carbon cycle over a large time scale. We found that it had, and this change appears to be linked to the growth of plant life on land and silicon-using animal life in the sea. " In the study, researchers measured lithium isotopes in 600 samples of rock taken from many different locations around the world..."

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Guest post: Why CO2 removal is not equal and opposite to reducing emissions Carbon Brief

"...This can be achieved by enhancing natural carbon “sinks” that remove CO2 from the atmosphere – for example, by planting trees or restoring peatlands and mangrove forests. Other ways to remove CO2 from the atmosphere include capturing CO2 from bioenergy plants or engineered methods that capture CO2 directly from the atmosphere and store it underground or in products..."

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Historical climate effects of permafrost peatland surprise researchers

"...Peatlands are an important ecosystem that contribute to the regulation of the atmospheric carbon cycle. A multidisciplinary group of researchers, led by the University of Helsinki, investigated the climate response of a permafrost peatland located in Russia during the past 3,000 years. Unexpectedly, the group found that a cool climate period, which resulted in the formation of permafrost in northern peatlands, had a positive, or warming, effect on the climate..."

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Recommended Reading

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Podcasts

Recent episodes that mention carbon cycle.

Scott Denning: Semester at Sea | The Global Carbon Cycle | From Geology to Atmospheric Science

Duration: 2:23:11

"...Professor Scott Denning from the Department of Atmospheric Science at Colorado State University joins me to talk about his semester teaching at sea, his research career working on the global carbon cycle (especially the atmospheric and land portions), and his pathway from geology into atmospheric science..."

further listening

Anna Harper: the Land Carbon Cycle

Duration: 1:58:11

"...Lecturer Anna Harper on vegetation, climate change, and her pathway into science..."

further listening

Corinne Le Quéré on the global carbon cycle

Duration: 27:00

"...Throughout the history of planet Earth, the element carbon has cycled between the atmosphere, the oceans and the biosphere..."

further listening

Corinne Le Quéré on the global carbon cycle

Duration: 27:49

"...Throughout the history of planet Earth, the element carbon has cycled between the atmosphere, the oceans and the biosphere..."

further listening


Informative Video

Discussions, Documentaries, and Investigative Reports about carbon cycle.

Underwater robot may unearth climate mysteries

"...Twilight zone animals play a major part in the carbon cycle, bringing organic carbon from surface waters and trapping them deep beneath the tides..."

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The Hydrologic and Carbon Cycles: Always Recycle! - Crash Course Ecology #8

"...The hydrologic cycle describes how water moves on, above, and below the surface of the Earth, driven by energy supplied by the sun and wind..."

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Forest Degradation — Mathias Disney / Serious Science

"...There's an ecosystem service to us selfishly but to all other organisms that depend on them, so there's been a lot of work again in trying to understand how we can map degradation rather than just purely deforestation. ' ..."

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Academic Research

Recent peer-reviewed papers about carbon cycle relevant to the latest news.

Changes in plant debris and carbon stocks across a subalpine forest successional series

"...Conclusions The stock and role of woody debris, particularly coarse woody debris, varied greatly with the forest successional stage and dominated the carbon cycle in the subalpine forest ecosystem..."

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Increasing climate sensitivity of subtropical conifers along an aridity gradient

"...Subtropical forests are an important but still poorly understood component of the global carbon cycle and global biodiversity..."

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Records of volcanism and organic carbon isotopic composition (δ13Corg) linked to changes in atmospheric pCO2 and climate during

"...Results suggest volcanism to be a significant driver for late Pennsylvanian to earliest Cisuralian shifts in global climates from glacial to interglacial through greenhouse gas emissions and changes to the global carbon cycle..."

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Carbon stock and sink economic values of forest ecosystem in the forest industry region of Heilongjiang Province, China

"...The values of forest carbon stock (CSV) and carbon sink (COV) are important topics in the global carbon cycle..."

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Effect of land cover change on total SOC and soil PhytOC accumulation in the karst subtropical forest ecosystem, SW China

"...Conclusions The results of the present study provided scientific bases for further evaluating the carbon sink capacity of soil PhytOC in the karst ecosystem, in SW China, and have important values in the reduction of carbon emission and increase of carbon sink to combat the global warming..."

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Valorization of Waste Biomass in Fermentative Production of Cellulases: A Review

"...The most promising way to achieve the smooth, flexible and sustainable bioeconomy is the utilization of renewable lignocellulosic biomass as a feedstock for the production of fuels, chemicals, enzymes and high-valued products..."

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Impacts of strengthened warming by urban heat island on carbon sequestration of urban ecosystems in a subtropical city of China

"...Urban heat island could strengthen the warming trend of air temperature and cause the change of carbon cycle of urban ecosystems..."

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Characteristics of dissolved organic matter in lakes with different eutrophic levels in southeastern Hubei Province, China

"...This study helps us systematically understand the DOM characteristics, microbial activities, and pollutant transformation in the Changjiang River basin and provides reference to the ecological restoration of aquatic environments..."

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Effects of livestock on nitrogen and carbon cycling in a savanna in Burkina Faso

"...Therefore, our hypothesis that grazing would increase soil 13C and 15N values and plant biomass was only verified for grass 15N..."

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Comparison of tree-ring growth and eddy covariance-based ecosystem productivities in three different-aged pine plantation fores

"...Key message This study utilized dendrochronology and long-term (2003?2017) eddy covariance (EC) carbon flux data to investigate the relationships between tree growth and gross ecosystem productivity (GEPEC) in different-age (15-, 42- and 78-year old) pine plantation forests in the Great Lakes region in eastern North America and found that tree-ring growth in these different-age pine forests was significantly (p?<?0..."

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Beyond trees: Mapping total aboveground biomass density in the Brazilian savanna using high-density UAV-lidar data

"...However, their ability to store and sequester carbon is uncertain due to combined and intermingling effects of anthropogenic activities and climate change, which impact wildfire regimes and vegetation dynamics..."

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Recent progress and perspective of electrochemical CO2 reduction towards C2-C5 products over non-precious metal heterogeneous e

"...Electroreduction of carbon dioxide (CO2ER) into value-added chemical compounds has presented as a promising route for renewable carbon cycle, which alleviates global warming concern..."

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