Carol Morris, Catherine Price, Brigitte Nerlich IN: Environmental Communication, https://doi.org/10.1080/17524032.2024.2357318
This article examines societal debate and discussion around biochar as represented in the UK print news media and reflects on its implications for the democratic governance of novel technologies.
zeit.de, 29.Mai 2024, 13:46 Uhr
“CO₂ unter der Erde zu speichern, ist in Deutschland derzeit verboten. Das Kabinett hat ein Gesetz gebilligt, das es erlaubt. Die Pläne betreffen vor allem die Nordsee.”
Sean Fettrow, Andrew Wozniak, Holly A. Michael, and Angelia L. Seyfferth IN: Biogeosciences, https://doi.org/10.5194/bg-21-2367-2024
Tidal marshes often contain multiple species of cordgrass due to variations in hydrology and soil biogeochemistry caused by microtopography and distance from tidal creeks, creating distinct subsites. The overarching objective was to observe how soil C concentration and dissolved organic carbon (DOC) vary across four plant phenophases and across three subsites categorized by unique vegetation and hydrology. The authors also investigated the dominant biogeochemical controls on the spatiotemporal variability of soil C and DOC concentrations.
Yinghuan Xie, Paul Spence, Stuart Corney, Veronica Tamsitt, Hannah R. S. Dawson, Christina Schmidt, Lennart T. Bach IN: Geophysical Research Letter, https://doi.org/10.1029/2023GL106342
Antarctic Bottom Water (AABW) transports surface nutrients deep into the ocean, sequestering them for centuries. Enhancing its biological carbon fixation could augment carbon sinks and reduce atmospheric CO2. Yet, it is uncertain if AABW receives enough light for significant photosynthesis before subducting.
Serena De Marco, Stefano Caserini, Thorben Amann, Mario Grosso IN: Environmental Research Letters, DOI 10.1088/1748-9326/ad4efb
Based on a literature review, surface mining, comminution, their related sub-stages, and long-haul transportation have carefully been surveyed to elucidate the order of magnitude of the energy demand, the technical challenges posed by each operation, and the potential energy-savings achievable by applying opportune strategies. This work confirms the significant energy-saving opportunities in fine and ultrafine grinding (one of the most energy-consuming activities along the raw material supply chain) as underlined by previous studies, and, in addition, it focuses on limestone and olivine-rich rocks providing new outcomes, it analyses data from a climate change perspective and extends calculations and discussion to transportation.
Yi Leng, Wei Li, Philippe Ciais, Minxuan Sun, Lei Zhu, Chao Yue, Jinfeng Chang, Yitong Yao, Yuan Zhang, Jiaxin Zhou, Zhao Li, Xuhui Wang, Yi Xi, Shushi Peng IN: One Earth, 7, 5, https://doi.org/10.1016/j.oneear.2024.04.011
Forecasting ahead to the year 2100, the work presented in this article shows that forest aging and the slowdown of atmospheric CO2 growth will reduce China’s land-based carbon sink by up to 1.1 Tg of carbon per year. Considering the commitment to achieving carbon neutrality by 2060, China needs to recognize the limitations of forests as a climate mitigation tool and promote stringent emission reductions in other sectors.
Alice E. Budai, Daniel P. Rasse, Thomas Cottis, Erik J. Joner, Vegard Martinsen, Adam O’Toole, Hugh Riley, Synnøve Rivedal, Ievina Sturite, Gunnhild Søgaard, Simon Weldon, Samson Øpstad IN: European Journal of Soil Science, https://doi.org/10.1111/ejss.13493
In Norway, where soils have relatively high carbon content because of the cold climate, adapting management practices that prevent the loss of carbon to the atmosphere in response to climate change is also important. This work presents an overview of the potential for carbon sequestration in Norway from a wide range of agricultural management practices and provides recommendations based on certainty in the reported potential, availability of the technology, and likelihood for implementation by farmers.
Lei He, Siyuan Ye, Hongming Yuan, Changbin Yu, Xigui Ding, Guangming Zhao, Shaofeng Pei, Jin Wang, Shixiong Yang, Xueyang Yu, Hans Brix, Edward A. Laws IN: Palaeogeography, Palaeoclimatology, Palaeoecology, 648, 112286, https://doi.org/10.1016/j.palaeo.2024.112286
To assess the capacity of coastal regions to uptake and bury carbon, a wetland restoration project was carried out in the degraded coastal wetlands of the Liaohe Delta between 2011 and 2013. A 13.33-ha degraded salt marsh was selected to create two enhanced carbon sink experimental areas, one dominated by Phragmites australis and the other dominated by Suaeda salsa. Improvements to the wetland matrix, hydrological processes, and vegetation colonization were designed and constructed.
Lauren J. Barrett, Samantha Rush, Penny Vlahos, ACS Publications, June 2024
The reader is introduced to the underlying physics of Earth’s energy systems, an outline of the global carbon cycle and its effects on climate over various timescales, and the theory of CDR. Understanding the natural relationship between carbon cycles and global climate is essential to CDR, as most technologies strive to accelerate the long-term carbon storage mechanisms provided in nature. To that end, a bottom-up understanding of atmospheric energy budgets from greenhouse gases to millennial-scale carbon cycling is provided.
Steven Bryant IN: Sustainability in the Oil and Gas Sector, 2024, https://doi.org/10.1007/978-3-031-51586-6_7
Every year in which targets for elimination and avoidance are not reached adds yet more carbon that must be removed from the atmosphere. The transportation sector is particularly challenged in this regard. It is impractical to avoid emissions from myriad vehicles, and difficult to eliminate emissions for some modes of transport. In this context, carbon-negative crude oil can play a valuable role. While nature-based solutions offer a route to CDR, engineered and natural/engineered hybrid NETs are likely to be necessary to accomplish CDR at scale. Unfortunately, few rapidly scalable options for NETs exist. Thus, the idea of coupling established, already scaled technologies for injecting and producing fluids in subsurface hydrocarbon reservoirs, such as CO2 enhanced oil recovery, with rapidly growing technologies to remove CO2 from the atmosphere, such as direct air capture, is timely. We describe how to operate this coupled process so that more carbon is removed from the atmosphere than is emitted during the production, processing, and combustion of oil. We discuss advantages and drawbacks of carbon-negative crude oil relative to other forms of CDR and to other paths to decarbonizing transportation, ranging from capital efficiency and speed of implementation to social desirability and technology lock-in.
