11.10.2021

# Political Papers

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Luderer, Gunnar; et al. (2021): Ariadne Report: Germany on its way to net zero 2045 (German)

Luderer, Gunnar; Kost, Christoph; Sörgel, Doninika (Eds.) (2021): Ariadne Report: Deutschland auf dem Weg zur Klimaneutralität 2045. Szenarien und Pfade im Modellvergleich. Kopernikus-Projekt Ariadne. Potsdam. Available online at https://ariadneprojekt.de/publikation/deutschland-auf-dem-weg-zur-klimaneutralitat-2045-szenarienreport/.

German report on possible pathways to net zero in Germany. 

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11.10.2021

# Media

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Video: Recording: Webinar: Negative emissions and net zero: how do technologies for carbon dioxide removal measure up? (CCUS Projects Network)

"The European Union is committed to keeping the average temperature rise to well below 2°C, preferably closer to 1.5°C, which according to the Intergovernmental Panel on Climate Change (IPCC) requires bringing global GHG emissions to net zero by 2050. The IPCC scenarios show that alongside implementing other climate mitigation policies it is essential to remove CO2 from the atmosphere, known as carbon dioxide removal (CDR) which includes negative emission technologies (NETs). Various options are being reviewed and discussed, including both nature-based solutions and CCS-based solutions. The most common CCS-related solutions identified are direct air carbon capture and storage (DACCS) and CCS on energy production from biomass (BECCS). This event will discuss policy mechanisms for the delivery of CDR, storage longevity and the role of offsetting, and present some real project examples and the potential range of biogenic sources that combined with CCS can enable CDR."

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08.10.2021

# Media

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Tech Crunch: Made of Air, a maker of ‘carbon negative’ thermoplastics, locks in $5.8M

"Berlin-based climate tech startup Made of Air has closed a €5 million (~$5.8 million) seed funding round, led by Norwegian sustainability-focused family fund, TD Veen. [...] As the name (kind of) implies, Made of Air (MoA) is producing durable materials for a variety of use cases that make use of (pyrolyzed) wood waste in order to lock up carbon for long periods in the resulting hardened carbon-negative thermoplastic compound. (Which is literally made from biochar and bioplastics)."

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08.10.2021

# New Publications

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Hasegawa, Tomoko; et al. (2021): Land-based implications of early climate actions without global net-negative emissions

Hasegawa, Tomoko; Fujimori, Shinichiro; Frank, Stefan; Humpenöder, Florian; Bertram, Christoph; Després, Jacques et al. (2021): Land-based implications of early climate actions without global net-negative emissions. In Nat Sustain 573, p. 357. DOI: 10.1038/s41893-021-00772-w.

"Delaying climate mitigation action and allowing a temporary overshoot of temperature targets require large-scale carbon dioxide removal (CDR) in the second half of this century that may induce adverse side effects on land, food and ecosystems. Meanwhile, meeting climate goals without global net-negative emissions inevitably needs early and rapid emission reduction measures, which also brings challenges in the near term. Here we identify the implications for land-use and food systems of scenarios that do not depend on land-based CDR technologies. We find that early climate action has multiple benefits and trade-offs, and avoids the need for drastic (mitigation-induced) shifts in land use in the long term. Further long-term benefits are lower food prices, reduced risk of hunger and lower demand for irrigation water. Simultaneously, however, near-term mitigation pressures in the agriculture, forest and land-use sector and the required land area for energy crops increase, resulting in additional risk of food insecurity."

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07.10.2021

# New Publications

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Du, Yang; et al. (2021): Zero- and negative-emissions fossil-fired power plants using CO2 capture by conventional aqueous amines

Du, Yang; Gao, Tianyu; Rochelle, Gary T.; Bhown, Abhoyjit S. (2021): Zero- and negative-emissions fossil-fired power plants using CO2 capture by conventional aqueous amines. In International Journal of Greenhouse Gas Control 111, p. 103473. DOI: 10.1016/j.ijggc.2021.103473.

"This work investigated the technical and economic feasibility of achieving zero and negative CO2 emissions in both pulverized coal (PC) and natural gas combined cycle (NGCC) power plants, using conventional amine scrubbing with 30 wt% aqueous monoethanolamine. In this work, we refer to “zero emissions” when the amount of CO2 in the exhaust flue gas is equal to that in the intake combustion air, and “negative emissions” when the amount of CO2 in the exhaust flue gas is less that in the intake combustion air. Increasing CO2 capture from 90% to that at zero-emissions for fossil-fired power plants can reduce global CO2 emissions by up to ∼1 Gt/y for the current global power generation mix. Even higher CO2 capture leads to negative emissions of the power plant with part of the CO2 from the intake air removed along with the fossil-fuel derived CO2. With an absorber configuration including a simple solvent intercooler, both PC and NGCC power plants can achieve zero-emissions with a ∼5% and ∼13% increase in CO2 avoidance costs, compared with the costs at 90% CO2 capture. The larger cost penalty for NGCC was mainly due to a temperature bulge at the absorber top. Replacing the simple solvent intercooler with a pump-around intercooler was able to reduce this cost penalty to ∼8%. Further decarbonization of flue gases from zero-emissions to direct air capture (DAC)-level of negative emissions (∼100 ppmv of CO2 in exhaust gases) has incremental costs of over $1000/t CO2 avoided for both PC and NGCC."

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06.10.2021

# Political Papers

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Elkerbout, Milan; Bryhn, Julie (2021): Setting the context for an EU policy framework for negative emissions. CEPS

Elkerbout, Milan; Bryhn, Julie (2021): Setting the context for an EU policy framework for negative emissions. CEPS (CEPS Policy Insights, 2021-12). Available online at https://www.ceps.eu/wp-content/uploads/2021/09/PI2021-12_EU-policy-framework-for-negative-emissions.pdf.

"Negative emissions – the removal of carbon dioxide from the atmosphere – will be needed in the EU and globally to reach long-term climate targets. This scoping paper explores the different concepts relevant to discussing negative emissions in an EU policy context, starting with the scientific basis described by the Intergovernmental Panel on Climate Change (IPCC). The paper then discusses different ways negative emissions technologies can be categorised, and the potential trade-offs associated with their deployment. Finally, some political considerations for negative emissions policy are discussed. The paper will form the basis for an upcoming policy paper on how the EU should approach negative emissions in its climate policy framework."

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30.09.2021

# Calls & events

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Call for Submissions: Technological Innovations and Climate Change: Negative Emissions Technologies

"The Environmental Audit Committee is conducting an overarching inquiry looking at technological innovations which could contribute to tackling climate change. The next aspect of the inquiry will look at Negative Emissions Technologies."

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29.09.2021

# Media

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Vice: 'Carbon Footprint' and 'Net Zero' Don't Mean What You Think

"Words that imply strong emission reduction policies have adopted slippery meanings intended to imply companies are doing more to reduce emissions than they actually are."

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27.09.2021

# New Publications

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Abernethy, S.; O'Connor, F. M.; Jones, C. D.; Jackson, R. B. (2021): Methane removal and the proportional reductions in surface temperature and ozone

Abernethy, S.; O'Connor, F. M.; Jones, C. D.; Jackson, R. B. (2021): Methane removal and the proportional reductions in surface temperature and ozone. In Phil. Trans. R. Soc. A 379 (2210), p. 20210104. DOI: 10.1098/rsta.2021.0104.

"Mitigating climate change requires a diverse portfolio of technologies and approaches, including negative emissions or removal of greenhouse gases. Previous literature focuses primarily on carbon dioxide removal, but methane removal may be an important complement to future efforts. Methane removal has at least two key benefits: reducing temperature more rapidly than carbon dioxide removal and improving air quality by reducing surface ozone concentration. While some removal technologies are being developed, modelling of their impacts is limited. Here, we conduct the first simulations using a methane emissions-driven Earth System Model to quantify the climate and air quality co-benefits of methane removal, including different rates and timings of removal. We define a novel metric, the effective cumulative removal, and use it to show that each effective petagram of methane removed causes a mean global surface temperature reduction of 0.21 ± 0.04°C and a mean global surface ozone reduction of 1.0 ± 0.2 parts per billion. Our results demonstrate the effectiveness of methane removal in delaying warming thresholds and reducing peak temperatures, and also allow for direct comparisons between the impacts of methane and carbon dioxide removal that could guide future research and climate policy."

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27.09.2021

# Media

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Taz.de: party programs for the climate. 1,5 degrees? No plan! (German)

German article on party programs for tackling climate change.

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