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CarbonBrief: Analysis: How ‘carbon-cycle feedbacks’ could make global warming worse

"Scientists making climate-change projections have to deal with a number of uncertainties."

10.03.2020

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The Guardian: Trees on commercial UK plantations 'not helping climate crisis'

"Exclusive: carbon from most harvested wood soon ends up back in atmosphere, says study"

24.02.2020

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Video: SciShow: The Most Incredible Snowfall on Earth Occurs Deep Underwater

"Deep in the ocean, fluffy bits of organic matter fall like snow. But this marine snow isn’t just pretty; it’s an essential part of our ocean food webs and our global climate!"

06.01.2020

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Suarez, Celina A. (2019): Earth Catastrophes and Their Impact on the Carbon Cycle

Suarez, Celina A. (2019): Earth Catastrophes and Their Impact on the Carbon Cycle. Elements. October 2, 2019. http://elementsmagazine.org/2019/10/02/earth-catastrophes-impact-carbon-cycle/.

"This issue will focus on the origins of carbon on Earth, the roles played by large-scale catastrophic carbon perturbations in mass extinctions, the movement and distribution of carbon in large igneous provinces, and the role carbon plays in icehouse–greenhouse climate transitions in deep time."

13.05.2019

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The Nation: How Carbon Farming Can Help Stop Climate Change in Its Tracks

"New agricultural methods offer hope of restoring ecological balance."

08.10.2018

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Kovenock, M.; et al. (2018): Leaf Trait Acclimation Amplifies Simulated Climate Warming in Response to Elevated Carbon Dioxide

Kovenock, M.; Swann, A. (2018): Leaf Trait Acclimation Amplifies Simulated Climate Warming in Response to Elevated Carbon Dioxide. In: Global Biogeochem. Cycles 165 (2), S. 351. DOI: 10.1029/2018GB005883.

"Here we show that one leaf trait acclimation in response to elevated carbon dioxide—a one‐third increase in leaf mass per area—significantly impacts climate and carbon cycling in Earth system model experiments. Global net primary productivity decreases (−5.8 PgC/year, 95% confidence interval [CI_95%] −5.5 to −6.0), representing a decreased carbon dioxide sink of similar magnitude to current annual fossil fuel emissions (8 PgC/year)."

03.09.2018

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Humphrey, V.; et al. (2018): Sensitivity of atmospheric CO2 growth rate to observed changes in terrestrial water storage

Humphrey, V.; Zscheischler, J.; Ciais, P.; Gudmundsson, L.; Sitch, S.; Seneviratne, S. I. (2018): Sensitivity of atmospheric CO2 growth rate to observed changes in terrestrial water storage. In: Nature 560 (7720), S. 628–631. DOI: 10.1038/s41586-018-0424-4.

"We show that the CO₂ growth rate is strongly sensitive to observed changes in terrestrial water storage, drier years being associated with faster atmospheric CO₂ growth. We demonstrate that this global relationship is independent of known temperature effects and is underestimated in current carbon cycle models. Our results indicate that interannual fluctuations in terrestrial water storage strongly affect the terrestrial carbon sink and highlight the importance of the interactions between the water and carbon cycles."

16.07.2018

# Calls & events

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Call for Abstracts: Carbon: Challenges and Opportunities for the 21st Century (AGU 2018)

Deadline: 01. August 2018

"Carbon is an integral building block of life on Earth and has fueled unprecedented economic and societal progress. But with progress has come significant increases in atmospheric carbon dioxide and methane, causing warming and other health and environmental impacts. While efforts to reduce reliance on carbon-based fuels proceed, there is also growing attention to ways to remove carbon from the atmosphere, reliably sequester it, and develop commercial uses for it. Recent National Academies’ reports address scientific and technical issues related to methane emissions monitoring, measurement, and verification; a range of carbon dioxide removal and storage approaches; and utilization of carbon waste streams. This session will expand on these topics, inviting presentations that discuss the challenges and opportunities associated with evolving approaches to manage carbon."

07.02.2018

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Cao, Long (2018): The Effects of Solar Radiation Management on the Carbon Cycle

Cao, Long (2018): The Effects of Solar Radiation Management on the Carbon Cycle. In Curr Clim Change Rep 8 (2), p. 605. DOI: 10.1007/s40641-018-0088-z.

"The effect of solar geoengineering on terrestrial primary productivity is typically much smaller than that of CO₂ fertilization. Changes in the partitioning between direct and diffuse radiation in response to stratospheric aerosol injection could substantially alter modeled plant productivity. Inclusion of the nitrogen cycle would further modify the terrestrial response to solar geoengineering."

17.12.2017

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Cao, Long; Jiang, Jiu (2017): Simulated effect of carbon cycle feedback on climate response to solar geoengineering

Cao, Long; Jiang, Jiu (2017): Simulated effect of carbon cycle feedback on climate response to solar geoengineering. In Geophys. Res. Lett. DOI: 10.1002/2017GL076546.

"Here we use an Earth system model to investigate interactive feedbacks between solar geoengineering, global carbon cycle, and climate change. We design idealized sunshade geoengineering simulations to prevent global warming from exceeding 2°C above pre-industrial under a CO₂ emission scenario with emission mitigation starting from mid-of-century."