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| Open AccessIntegrating science and the arts to deglobalise climate change adaptation
Setting goals that are context-specific, relevant, and collectively shared is critical in adaptation. As necessary elements in target setting, imaginaries for adaptation and the language connected to them remain vague. Visuals produced through art-science collaborations can be great allies to (de)construct imaginaries and deglobalise discourses of adaptation.
- Marta Olazabal
- , Maria Loroño-Leturiondo
- & Josune Urrutia
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Article
| Open AccessIncrease in concerns about climate change following climate strikes and civil disobedience in Germany
Climate movements aim to raise public awareness of climate change through protests, but their efficacy is debated. Here, the authors show that concerns about climate change increased in Germany after climate strikes and non-violent acts of civil disobedience.
- Johannes Brehm
- & Henri Gruhl
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Perspective
| Open AccessEngineering biology and climate change mitigation: Policy considerations
Engineering biology is a dynamic field that uses gene editing, synthesis, assembly, and engineering to design new or modified biological systems. Here the authors discuss the policy considerations and interventions needed to support a role for engineering biology in climate change mitigation.
- Jonathan Symons
- , Thomas A. Dixon
- & Isak S. Pretorius
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| Open AccessThe atlas of unburnable oil for supply-side climate policies
The global atlas of unburnable oil shows that the most socio-environmentally sensitive areas, such as protected areas or biodiversity hotspots, need to be kept entirely off-limits to oil extraction in order to keep global warming under 1.5 °C.
- Lorenzo Pellegrini
- , Murat Arsel
- & Martí Orta-Martínez
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Article
| Open AccessTrade-offs in land-based carbon removal measures under 1.5 °C and 2 °C futures
This study demonstrates how land-based carbon removals and the market-mediated responses are sensitive to mitigation policy strength and scope, illustrating that, despite trade-offs, both forestation and BECCS are integral to cost-effective 2 °C pathways.
- Xin Zhao
- , Bryan K. Mignone
- & Haewon C. McJeon
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| Open AccessLimited impact of hydrogen co-firing on prolonging fossil-based power generation under low emissions scenarios
Effects of hydrogen and ammonia co-firing with fossil power generation on decarbonization scenario are assessed. Co-fired generation is limited to <1% because of higher cost of hydrogen. It will not delay the phase-out of fossil-based generators.
- Ken Oshiro
- & Shinichiro Fujimori
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Article
| Open AccessCCl4 emissions in eastern China during 2021–2022 and exploration of potential new sources
The Montreal Protocol globally phased out ozone-layer depleting CCl4 by 2010. However, atmospheric measurements show eastern China emitted ~7.6 gigagrams/year in 2021–2022. Further, industrial sources of ongoing CCL4 emissions are identified.
- Bowei Li
- , Jiahuan Huang
- & Xuekun Fang
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| Open AccessExploring negative emission potential of biochar to achieve carbon neutrality goal in China
Authors analyze the potential of biochar in China, revealing it could sequester up to 0.92 billion tons of CO2 per year with an average net cost of US$90 per ton of CO2 in a sustainable manner, supporting carbon neutrality goal by 2060.
- Xu Deng
- , Fei Teng
- & Pan Wang
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| Open AccessGreenhouse gas emissions from US irrigation pumping and implications for climate-smart irrigation policy
This study demonstrates the energy use of US pump irrigation produced 12.6 million tonnes CO2e in 2018, with spatial variability modulated by water source and fuel choice. These county-level estimates can inform strategic irrigation expansion and emissions reduction efforts.
- Avery W. Driscoll
- , Richard T. Conant
- & Nathaniel D. Mueller
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Article
| Open AccessModelling six sustainable development transformations in Australia and their accelerators, impediments, enablers, and interlinkages
Global research has identified six critical transformations to achieve the Sustainable Development Goals by 2030. Here, Allen et al model all six transformations in a national context and discuss implications for accelerating progress on the goals.
- Cameron Allen
- , Annabel Biddulph
- & Shirin Malekpour
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| Open AccessApproaching national climate targets in China considering the challenge of regional inequality
Aggressive or uniform actions on climate targets may exacerbate regional inequality and induce economic losses in China. The proposed collaborative strategy for carbon neutrality can avoid up to 1.54% of GDP losses while 90% of provinces would gain.
- Biying Yu
- , Zihao Zhao
- & Hua Liao
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Article
| Open AccessProjecting future carbon emissions from cement production in developing countries
The rapid deployment of low-carbon measures is urgently needed to reduce cement emissions as cement CO2 emissions from developing countries will almost deplete the remaining cement emissions budget within climate targets.
- Danyang Cheng
- , David M. Reiner
- & Dabo Guan
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Article
| Open AccessDeploying green hydrogen to decarbonize China’s coal chemical sector
The coal chemical sector uses coal to produce chemicals and emits substantial greenhouse gases, which are hard to abate by electrification alone. Deploying green H2 for China’s coal chemical plants can reduce ~50% of emissions at a low cost.
- Yang Guo
- , Liqun Peng
- & Denise L. Mauzerall
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Article
| Open AccessThe social costs of tropical cyclones
The estimates of the societal costs of carbon currently used for policy evaluations may be too low due to an insufficient representation of tropical cyclone damage. Accounting for them substantially increases the estimated benefits of climate change mitigation measures.
- Hazem Krichene
- , Thomas Vogt
- & Christian Otto
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Article
| Open AccessDecarbonization potential of electrifying 50% of U.S. light-duty vehicle sales by 2030
Electric vehicle sales goals alone will not achieve light duty vehicle emissions targets. Other actions including decarbonizing the electric grid, mode shifting, vehicle downsizing, reducing travel demand, and accelerating fleet turnover, are needed.
- Maxwell Woody
- , Gregory A. Keoleian
- & Parth Vaishnav
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Article
| Open AccessCircular wood use can accelerate global decarbonisation but requires cross-sectoral coordination
Cascading and especially circular wood uses enhance climate-change mitigation achieved by forestry. In combination, these measures could cumulatively mitigate 258.8 million tonnes CO2e by 2050 in the UK but implementation barriers must be overcome.
- Eilidh J. Forster
- , John R. Healey
- & David Styles
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Article
| Open AccessConcentration of asset owners exposed to power sector stranded assets may trigger climate policy resistance
Von Dulong analyzes owners and incidence of asset stranding in the power sector globally. She shows that Asia-Pacific, Europe, and the US are highly exposed to stranded assets, especially coal plants and explores the linkages between asset stranding and climate policy resistance.
- Angelika von Dulong
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| Open AccessAchieving decent living standards in emerging economies challenges national mitigation goals for CO2 emissions
Achieving decent living standards for global emerging economies is estimated to lead to an additional 8.6 Gt of CO2 emission with more than half of emerging economies emitting additional CO2 more than the value of their emission reduction commitments
- Jingwen Huo
- , Jing Meng
- & Dabo Guan
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| Open AccessCosts and health benefits of the rural energy transition to carbon neutrality in China
Electric cooking and air-to-air heat pump adoption in China advances carbon neutrality and the rural energy transition, with the transformation costs offset by monetized health benefits in most provinces.
- Teng Ma
- , Silu Zhang
- & Yang Xie
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| Open AccessGlobal fossil fuel reduction pathways under different climate mitigation strategies and ambitions
An analysis of the IPCC AR6 scenarios database explores how quickly coal, oil, and gas production and use should be reduced in line with net-zero goals, and points to the need to adopt phase-out benchmarks alongside other climate mitigation targets.
- Ploy Achakulwisut
- , Peter Erickson
- & Steve Pye
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| Open AccessHow climate policy commitments influence energy systems and the economies of US states
In the US, states vary in their efforts to address climate change. Stronger state climate policies reduce CO2 emissions without harming the economy, but these reductions are unlikely to meet the goals in the Paris Climate Accord.
- Parrish Bergquist
- & Christopher Warshaw
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| Open AccessThe narrowing gap in developed and developing country emission intensities reduces global trade’s carbon leakage
International trade redistributes production activities to regions with varying emission intensities. This study finds that the convergence of emission intensities between the global South - North and changes in trade patterns have resulted in declining net emissions in trade in the past decade.
- Jing Meng
- , Jingwen Huo
- & Kuishuang Feng
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| Open AccessA research and development investment strategy to achieve the Paris climate agreement
Timely R&D investment in green technologies lowers mitigation costs with positive employment effects. Carbon revenues are sufficient to finance the additional R&D investment and generate economic benefits.
- Lara Aleluia Reis
- , Zoi Vrontisi
- & Massimo Tavoni
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| Open AccessHidden delays of climate mitigation benefits in the race for electric vehicle deployment
The climate benefits of battery electric vehicles relative to internal combustion engine vehicles are favorable but usually delayed. The authors show the delay threshold in China and call for more attention to the temporal characteristics of climate benefits.
- Yue Ren
- , Xin Sun
- & Xinzhu Zheng
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| Open AccessValue chain carbon footprints of Chinese listed companies
A paper led by Prof. Zhang evaluates the value chain carbon footprints of Chinese listed companies. The results could encourage collaborative climate actions along value chains and help investors understand the environmental impacts of their investment.
- Zengkai Zhang
- , Jiaoyan Li
- & Dabo Guan
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| Open AccessOvercoming global inequality is critical for land-based mitigation in line with the Paris Agreement
In a world of deepening inequalities, climate polices might be feasible in high-income countries only. Here the authors find that overcoming global inequality through sustainable socio-economic development is critical for land-based mitigation in line with the Paris Agreement.
- Florian Humpenöder
- , Alexander Popp
- & Quentin Lejeune
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Comment
| Open AccessChallenging the financial capture of urban greening
Financing of urban greening has traditionally prioritized economic growth. Here the authors argue for action to ensure more socially just green financing.
- Melissa García-Lamarca
- , Isabelle Anguelovski
- & Kayin Venner
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| Open AccessImproving public support for climate action through multilateralism
A new study reports survey-experimental results suggesting that multilateral approaches to climate action increase domestic carbon tax approval. The appeal of multilateralism reflects improved sustainability beliefs about effectiveness, fairness, and reciprocity.
- Michael M. Bechtel
- , Kenneth F. Scheve
- & Elisabeth van Lieshout
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| Open AccessUS cities increasingly integrate justice into climate planning and create policy tools for climate justice
Climate justice is rising: large cities in the U.S. are increasingly integrating justice into their climate mitigation plans and pioneer cities are developing tools to operationalize just climate policies on the ground.
- Claudia V. Diezmartínez
- & Anne G. Short Gianotti
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| Open AccessComparing the levelized cost of electric vehicle charging options in Europe
Charging costs are important for the diffusion of electric vehicles as required to decarbonize transport. Here, the authors show large variance of electrical vehicle charging costs across 30 European countries and charging options, suggesting different policy options to reduce charging costs.
- Lukas Lanz
- , Bessie Noll
- & Bjarne Steffen
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| Open AccessCo-benefits of CO2 emission reduction from China’s clean air actions between 2013-2020
China’s clean air action stimulated a net accumulative reduction of 2.43 Gt CO2 emission from 2013-2020. Phase-out and upgrades of outdated, polluting, and inefficient combustion facilities have promoted the transition of the country’s energy system.
- Qinren Shi
- , Bo Zheng
- & Qiang Zhang
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Article
| Open AccessIncreased energy use for adaptation significantly impacts mitigation pathways
A new study characterizes adaptation in mitigation pathways, and shows that climate adaptation can lead to higher energy demand, power system costs and carbon prices, with mitigation’s benefits compensating decarbonization costs.
- Francesco Pietro Colelli
- , Johannes Emmerling
- & Enrica De Cian
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| Open AccessAmericans experience a false social reality by underestimating popular climate policy support by nearly half
A new study finds that Americans underestimate how many are concerned about climate change as well as support for major climate policies by nearly half, with climate policy supporters significantly outnumbering non-supporters.
- Gregg Sparkman
- , Nathan Geiger
- & Elke U. Weber
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| Open AccessEfficient use of cement and concrete to reduce reliance on supply-side technologies for net-zero emissions
A new study finds supply-side efforts alone are unlikely to lead to net-zero emissions across the cement and concrete cycle by 2050, advocating for more efficient use of cement and concrete in the built environment and more strategic options for decarbonization.
- Takuma Watari
- , Zhi Cao
- & Keisuke Nansai
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| Open AccessContrasting suitability and ambition in regional carbon mitigation
New study finds geographical mismatch in cross-regional ranking between cost and benefit of carbon mitigation, as well as spatial mismatch between relative suitability of mitigation and mitigation ambition of emitters.
- Yu Liu
- , Mingxi Du
- & Klaus Hubacek
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| Open AccessGreen gentrification in European and North American cities
The relationship between new greenspaces and gentrification is an important one for urbanization. Here the authors show a positive relationship for at least one decade between greening in the 1990s–2000s and gentrification that occurred between 2000–2016 in 17 of 28 studied cities in North America and Europe.
- Isabelle Anguelovski
- , James J. T. Connolly
- & Joaquin Martinez Minaya
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| Open AccessCross-cutting scenarios and strategies for designing decarbonization pathways in the transport sector toward carbon neutrality
New study shows how region-specific policy under the Avoid–Shift–Improve framework may aid in realizing a deep decarbonization in the transport sector and assist in achieving China’s carbon neutrality goals.
- Runsen Zhang
- & Tatsuya Hanaoka
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| Open AccessCOVID-19, Green Deal and recovery plan permanently change emissions and prices in EU ETS Phase IV
This paper finds that the EU’s 2030 reduction target of -55% might correspond to EU ETS allowance prices between 45 and 94 e/ton CO2 today, while the invalidation rule reduces carbon emissions to 14.2 to 18.3 GtCO2 over the EU ETS’ remaining lifetime.
- Kenneth Bruninx
- & Marten Ovaere
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| Open AccessConsistent cooling benefits of silvopasture in the tropics
A new study shows that tropical silvopasture systems can provide significant cooling services for local communities, and identifies where these silvopasture systems can most effectively counteract global climate change to help communities adapt to warming.
- Lucas R. Vargas Zeppetello
- , Susan C. Cook-Patton
- & Yuta J. Masuda
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| Open AccessVegetation-based climate mitigation in a warmer and greener World
Vegetation changes have been suggested as a climate mitigation option, but the numerous feedbacks between vegetation and climate are not well understood. Here, the authors show that greening leads to surface cooling in many areas, but the size of the effect depends on the background climate.
- Ramdane Alkama
- , Giovanni Forzieri
- & Alessandro Cescatti
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| Open AccessCarbon tax acceptability with information provision and mixed revenue uses
Public acceptability of carbon taxation is vital for its implementation. Here, the authors show that spending all revenues on climate projects, rather than mixing them, is the most acceptable policy, while information provision only increases acceptability for a carbon tax with unspecified revenues.
- Sara Maestre-Andrés
- , Stefan Drews
- & Jeroen van den Bergh
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| Open AccessLocation-specific co-benefits of carbon emissions reduction from coal-fired power plants in China
Spatially nuanced policies are necessary for maximising co-benefits of carbon-emissions reduction from coal-fired power plants. Here the authors present an approach integrating costs of CO2 and air pollution emissions to better understand social costs of electricity generation from coal burning in China.
- Pu Wang
- , Cheng-Kuan Lin
- & Tong Wu
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| Open AccessGlobal roll-out of comprehensive policy measures may aid in bridging emissions gap
Comprehensive policy measures are needed to close the emissions gap between Nationally Determined Contributions and emissions goals of the Paris Agreement. Here the authors present a Bridge scenario that may aid in closing the emissions gap by 2030.
- Heleen L. van Soest
- , Lara Aleluia Reis
- & Detlef P. van Vuuren
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| Open AccessHarmonizing corporate carbon footprints
Current carbon accounting and reporting practices remain unsystematic and incomparable, particularly for emissions along the value chain (scope 3). Here the authors present a framework to harmonize scope 3 emissions by accounting for reporting inconsistency, boundary incompleteness, and activity exclusion.
- Lena Klaaßen
- & Christian Stoll
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Article
| Open AccessThe mortality cost of carbon
Climate change is expected to have impacts on human mortality, e.g. through increases in heat waves. Here, the author proposes a new metric to account for excess deaths from additional CO2 emissions, which allows to assess the mortality impacts of marginal emissions and leads to a substantial increase in the social costs of carbon.
- R. Daniel Bressler
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Article
| Open AccessHigher cost of finance exacerbates a climate investment trap in developing economies
Access to low cost finance is vital for developing economies’ transition to green energy. Here the authors show how modelled decarbonization pathways for developing economies are disproportionately impacted by different weighted average cost of capital (WACC) assumptions.
- Nadia Ameli
- , Olivier Dessens
- & Michael Grubb
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| Open AccessCommercial afforestation can deliver effective climate change mitigation under multiple decarbonisation pathways
Afforestation is an important greenhouse gas (GHG) mitigation strategy but the efficacy of commercial (harvested) forestry is disputed. Here the authors apply dynamic life cycle assessment to show that new commercial conifer forests can achieve up to 269% more GHG mitigation than semi-natural forests, over 100 years.
- Eilidh J. Forster
- , John R. Healey
- & David Styles
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Article
| Open AccessCombining ambitious climate policies with efforts to eradicate poverty
Ambitious climate policies can negatively impact the global poor by affecting income, food and energy prices. Here, the authors quantify this effect, and show that it can be compensated by national redistribution of the carbon pricing revenues in combination with international climate finance.
- Bjoern Soergel
- , Elmar Kriegler
- & Alexander Popp
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Perspective
| Open AccessA policy roadmap for negative emissions using direct air capture
Negative emission technologies are central to avoiding catastrophic climate change. Deploying engineered solutions such as direct air capture requires a policy sequencing strategy that focuses on “incentives + mandates” in early adopters, while creating positive spillovers that incentivize follower countries to take policy action.
- Jonas Meckling
- & Eric Biber