Results 41 to 50 of about 1,437,244 (260)

Microbial ecosystem responses to alkalinity enhancement in the North Atlantic Subtropical Gyre

Frontiers in Climate, 2022
In addition to reducing carbon dioxide (CO2) emissions, actively removing CO2 from the atmosphere is widely considered necessary to keep global warming well below 2°C.
Adam V. Subhas, Lukas Marx, Sarah Reynolds, Anita Flohr, Edward W. Mawji, Peter J. Brown, B. B. Cael   +6 more
doaj   +1 more source

Laboratory experiments in ocean alkalinity enhancement research

State of the Planet, 2023
Abstract. Recent concern about the consequences of continuing increases in atmospheric CO2 as a key heat-trapping agent (USGCRP, 2017; IPCC, 2021) have prompted ocean experts to come together to discuss how to provide science-based solutions. Ocean alkalinity enhancement (OAE) is being considered not only as a ocean carbon dioxide removal (CDR ...
Maria D. Iglesias-Rodríguez, Rosalind E. M. Rickaby, Arvind Singh, James A. Gately   +3 more
openaire   +2 more sources

Subsurface dissolution reduces the efficiency of mineral-based open-ocean alkalinity enhancement [PDF]

Biogeosciences
Carbon dioxide removal (CDR) from the atmosphere will likely be required to offset hard-to-abate emissions and limit global warming to well below 2 °C, in line with the Paris Agreement. Among proposed CDR strategies, ocean alkalinity enhancement (OAE) is
F. A. Burger, F. A. Burger, U. Hofmann Elizondo, U. Hofmann Elizondo, H. Grosselindemann, H. Grosselindemann, T. L. Frölicher, T. L. Frölicher   +7 more
doaj   +1 more source

Pathways for marine carbon dioxide removal using electrochemical acid-base generation

Frontiers in Climate
Research over the past decade has resulted in various methods for removing CO2 from the atmosphere using seawater and electrochemically generated acids and bases.
Matthew D. Eisaman, Matthew D. Eisaman
doaj   +1 more source

Phytoplankton response to increased nickel in the context of ocean alkalinity enhancement

Biogeosciences, 2023
Abstract. Ocean alkalinity enhancement (OAE) is considered one of the most promising approaches to actively remove carbon dioxide (CO2) from the atmosphere by accelerating the natural process of rock weathering. This approach involves introducing alkaline substances sourced from natural mineral deposits, such as olivine, basalt, and carbonates or ...
Xiaoke Xin, Giulia Faucher, Ulf Riebesell   +2 more
openaire   +4 more sources

Assessing the Impacts of Simulated Ocean Alkalinity Enhancement on Viability and Growth of Cultures of Near-Shore Species of Phytoplankton

, 2023
Over the past 250 years, atmospheric carbon dioxide concentrations have risen steadily from 277 ppm to 405 ppm, leading to the exacerbation of the effects of climate change.
Oberlander, Jessica
core  

Ionic Gating of Liquid‐Crystal‐Like Pteridine Assemblies Enables Tunable Light Scattering

Advanced Materials, EarlyView.
Tunable optical properties emerge through developmentally regulated ionic gating, which transforms disordered, ultraviolet (UV)‐absorbing organelles into concentrically ordered, liquid‐crystal‐like light scatterers. By integrating analyses of pteridine composition, potassium‐dependent assembly, hierarchical ultrastructure, and optical behavior, the ...
Sourabh Bera, Zohar Eyal, Yael Noy, Yuval Barzilay, Siddharth Sahoo, Srikant Moharana, Avi Baram, Tali Lerer‐Goldshtein, Neta Varsano, Bar Bader, Lothar Houben, Uwe Heinig, Iddo Pinkas, Moshe Goldsmith, Tamar Unger, Shira Albeck, Andrea Sorrentino, Maxim Itkin, Sergey Malitsky, Ziv Porat, Ido Hadar, Venkata Jayasurya Yallapragada, Dvir Gur   +22 more
wiley   +1 more source

Iron‐Mediated Release of Aged Dissolved Organic Carbon From Waterlogged Peatland Under Warming

Advanced Science, EarlyView.
This study conducts a five‐year in situ warming experiment in high‐altitude peatlands to examine dissolved organic carbon (DOC) release. The study shows that warming promotes the release of plant‐derived modern DOC in drained peatlands, but amplifies aquatic export of century‐old DOC from waterlogged peatlands via Fe‐mediated DOC mobilization—a ...
Guohua Dai, Zhiying Yang, Zongguang Liu, Wanjia Hu, Lixiao Ma, Enze Kang, Wanqing Luo, Yunpeng Zhao, Chengzhu Liu, Juan Jia, Ting Liu, Chen He, Quan Shi, Jianliang Liu, Yongheng Gao, Huai Chen, Hailong Zhang, Meixun Zhao, Xiaojuan Feng   +18 more
wiley   +1 more source

Site selection for ocean alkalinity enhancement informed by passive tracer simulations

Communications Earth & Environment
Ocean alkalinity enhancement is a marine-based carbon dioxide removal strategy that involves adding alkaline material to the surface ocean to boost carbon uptake and storage.
Yiming Guo, Ke Chen, Adam V. Subhas, Jennie E. Rheuban, Zhaohui Aleck Wang, Daniel C. McCorkle, Anna Michel, Heather H. Kim   +7 more
doaj   +1 more source

Deep Learning‐Driven Discovery and Engineering of an Efficient PETase for Depolymerization and Detoxification of PET Microplastics Under Physiological Conditions

Advanced Science, EarlyView.
A deep learning–driven pipeline mining 246 million protein sequences uncovers AhPETase, an evolutionarily distinct PET hydrolase. Engineered variant AhPETaseM1 degrades post‐consumer PET microplastics under physiological conditions and reverses microplasticinduced cytotoxicity in human lung and colon cells, establishing enzymatic microplastic ...
Yuxuan Wang, Shijie He, Yuheng Chang, Sheng Mao, Jianan Canal Li, Binbin Chen, Hongxun Gao, Mingchun Xu, Chenxu Liu, Yajie Wang   +9 more
wiley   +1 more source