23.08.2021

# New Publications

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Marchegiani, Davide; Dommenget, Dietmar (2021): Counteracting global warming by using a locally optimized solar radiation management

Marchegiani, Davide; Dommenget, Dietmar (2021): Counteracting global warming by using a locally optimized solar radiation management. In Earth and Space Science. DOI: 10.1002/essoar.10507751.1.

"Here, using the Globally Resolved Energy Balance (GREB) model, we present experiments designed to completely offset global and regional surface temperature response due to CO2 forcing."

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23.08.2021

# New Publications

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Miao, Yihe; et al. (2021): Operating Temperatures Affect Direct Air Capture of CO2 in Polyamine-Loaded Mesoporous Silica

Miao, Yihe; He, Zhijun; Zhu, Xuancan; Izikowitz, David; Li, Jia (2021): Operating Temperatures Affect Direct Air Capture of CO2 in Polyamine-Loaded Mesoporous Silica. In Chemical Engineering Journal, p. 131875. DOI: 10.1016/j.cej.2021.131875.

"Direct air capture (DAC) is a representative negative emission technology that plays a critical role in achieving carbon neutrality. Understanding the CO2 capture performance of DAC materials in a real-world environment is important to optimize the performance of DAC processes, unfortunately, little is known about their capture efficiency under varying operating temperatures. To this end, we investigated the influence of operating temperatures on the DAC performance of the polyamine-loaded mesoporous silica."

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20.08.2021

# New Publications

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Geissler, Caleb H.; Maravelias, Christos T. (2021): Economic, energetic, and environmental analysis of lignocellulosic biorefineries with carbon capture

Geissler, Caleb H.; Maravelias, Christos T. (2021): Economic, energetic, and environmental analysis of lignocellulosic biorefineries with carbon capture. In Applied Energy 302, p. 117539. DOI: 10.1016/j.apenergy.2021.117539.

"Bioenergy with carbon capture and sequestration (BECCS) is a promising method for global warming mitigation. We use a mixed-integer nonlinear programming (MINLP) model to examine the impact of carbon sequestration credits, capture rates, biorefinery capacity, feedstock, and pretreatment selection on the performance of an ethanol biorefinery system."

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20.08.2021

# New Publications

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Burt, Daniel J.; et al. (2021): The Sensitivity of the Marine Carbonate System to Regional Ocean Alkalinity Enhancement

Burt, Daniel J.; Fröb, Friederike; Ilyina, Tatiana (2021): The Sensitivity of the Marine Carbonate System to Regional Ocean Alkalinity Enhancement. In Front. Clim. 3, p. 21. DOI: 10.3389/fclim.2021.624075.

"Ocean Alkalinity Enhancement (OAE) simultaneously mitigates atmospheric concentrations of CO2 and ocean acidification; however, no previous studies have investigated the response of the non-linear marine carbonate system sensitivity to alkalinity enhancement on regional scales. We hypothesise that regional implementations of OAE can sequester more atmospheric CO2 than a global implementation."

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20.08.2021

# New Publications

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Vakilifard, Negar; et al. (2021): The role of enhanced rock weathering deployment with agriculture in limiting future warming and protecting coral reefs

Vakilifard, Negar; Kantzas, Euripides P.; Neil R, Edwards; Holden, Philip B.; Beerling, David J. (2021): The role of enhanced rock weathering deployment with agriculture in limiting future warming and protecting coral reefs. In Environ. Res. Lett. 16 (9), p. 94005. DOI: 10.1088/1748-9326/ac1818.

"Meeting the net-zero carbon emissions commitments of major economies by mid-century requires large-scale deployment of negative emission technologies (NETs). Terrestrial enhanced rock weathering on croplands (ERW) is a NET with co-benefits for agriculture, soils and ocean acidification that creates opportunities for generating income unaffected by diminishing carbon taxes as emissions approach net-zero. Here we show that ERW deployment with croplands to deliver net 2 Gt CO2 yr−1 removal approximately doubles the probability of meeting the Paris 1.5 °C target at 2100 from 23% to 42% in a high mitigation Representative Concentration Pathway 2.6 baseline climate."

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19.08.2021

# New Publications

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Keller, David P.; et al. (2021): Editorial: The Role of Ocean-Based Negative Emission Technologies for Climate Mitigation

Keller, David P.; Brent, Kerryn; Bach, Lennart T.; Rickles, Wilfried (2021): Editorial: The Role of Ocean-Based Negative Emission Technologies for Climate Mitigation. In Front. Clim. 3. DOI: 10.3389/fclim.2021.743816.

"Until now, the majority of NETs research and development has focused on land-based options such as bioenergy with carbon capture and storage (BECCS). However, ocean-based NETs can potentially also play a significant CDR role. Like their terrestrial counterparts, ocean-based NETs seek to accelerate the uptake of atmospheric CO2 by enhancing natural sinks or by engineering the removal and storage of CO2. Currently there are too many knowledge gaps to fully assess the potential, effectiveness, efficiency, risks and co-benefits, and economic costs of most approaches."

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19.08.2021

# New Publications

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Weil, Gabriel (2021): Global Climate Governance in 3D

Weil, Gabriel (2021): Global Climate Governance in 3D. In SSRN Journal 319 (7), p. 339. DOI: 10.2139/ssrn.3788661.

"The characteristics of climate interventions vary across three distinct dimensions, which the mitigation-geoengineering dichotomy fails to capture. First, interventions operate via different mechanisms, such as altering the atmospheric concentration of greenhouse gases or changing the fraction of incoming solar radiation absorbed by the earth. Second, the characteristic duration of interventions varies from days to millennia. Third, interventions differ in terms of leverage — the scale of climate impact achievable with a fixed investment of resources. This article argues that global climate governance would be best served by a unified approach that addresses all climate interventions based on these three dimensions."

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19.08.2021

# New Publications

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Visioni, Daniele; et al. (2021): Reduced poleward transport due to stratospheric heating under geoengineering

Visioni, Daniele; Simpson, Isla Ruth; MacMartin, Douglas G.; Richter, Jadwiga H.; Kravitz, Ben; Lee, Walker (2021): Reduced poleward transport due to stratospheric heating under geoengineering. DOI: 10.1002/essoar.10503509.1.

"Simulating the complex aerosol microphysical processes in a comprehensive Earth System Model can be very computationally intensive and therefore many models utilize a modal approach, where aerosol size distributions are represented by observations-derived lognormal functions. This approach has been shown to yield satisfactory results in a large array of applications, but there may be cases where the simplification in this approach may produce some shortcomings. In this work we show specific conditions under which the current approximations used in modal approaches might yield some incorrect answers. Using results from the Community Earth System Model v1 (CESM1) Geoengineering Large Ensemble (GLENS) project, we analyze the effects in the troposphere of a continuous increasing load of sulfate aerosols in the stratosphere, with the aim of counteracting the surface warming produced by non-mitigated increasing greenhouse gases concentration between 2020–2100."

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19.08.2021

# New Publications

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Manoussi, Vassiliki; Xepapadeas, Anastasios (2021): Cooperation and Competition in Climate Change Policies

Manoussi, Vassiliki; Xepapadeas, Anastasios (2021): Cooperation and Competition in Climate Change Policies. Mitigation and Climate Engineering when Countries are Asymmetric. In Environ Resource Econ. DOI: 10.1007/s10640-015-9956-3.

"Solar Radiation Management (SRM) is regarded as a tool to potentially counteract global warming by increasing planetary albedo. Even though it has shown effective results in offsetting global surface temperature, one of its main limits lies in the persistence of major regional anomalies, for both surface temperature and precipitation. Here, using the Globally Resolved Energy Balance (GREB) model, we present experiments designed to completely offset global and regional surface temperature response due to CO2 forcing."

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16.08.2021

# New Publications

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Anyanwu, John-Timothy; et al. (2022): CO2 capture (including direct air capture) and natural gas desulfurization of amine-grafted hierarchical bimodal silica

Anyanwu, John-Timothy; Wang, Yiren; Yang, Ralph T. (2022): CO2 capture (including direct air capture) and natural gas desulfurization of amine-grafted hierarchical bimodal silica. In Chemical Engineering Journal 427, p. 131561. DOI: 10.1016/j.cej.2021.131561.

"Amine grafting under hydrous conditions is emerging as a promising solution to developing amine grafted adsorbents with high amine loading and superior capture performance. In this study, a hierarchical bimodal mesoporous silica (HBS) that can be easily and cost-effectively synthesized was identified."

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