| 1. |
- Johansson-Stenman, Olof, 1966, et al.
(författare)
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DN Debatt: Det territoriella perspektivet fortfarande viktigast
- 2015
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Ingår i: Dagens Nyheter. - 1101-2447.
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Styrmedel baserade på territorialperspektivet är bättre, för de påverkar både produktionsmetoder och sammansättningen på konsumtion, skriver Olof Johansson-Stenman, Thomas Sterner och Christian Azar.
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| 2. |
- Yeh, Sonia, 1973, et al.
(författare)
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Tradable performance standards in the transportation sector
- 2021
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Ingår i: Energy Economics. - : Elsevier BV. - 0140-9883 .- 1873-6181. ; 102
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Tidskriftsartikel (refereegranskat)abstract
- Performance standards have a long history in environmental policy. A performance standard sets a standard of technology performance but leaves technology choice to producers; it increases the relative costs of technologies with undesirable performance characteristics and lowers the costs of technologies with desirable characteristics. The primary motivations are to promote innovation, to address consumers' undervaluation of efficiency, and to reduce externalities, such as air pollution and the risks of dependence on foreign oil. In the past decade, trading has been incorporated (thus termed as tradable performance standard, TPS) into several U.S. transportation programs: regulations for greenhouse gas emissions from passenger cars and trucks (national), zero-emission vehicle programs (10 states), the Renewable Fuel Standard (national), and low-carbon fuel standards (two states). TPS allows for equalization of marginal costs across eligible technologies and is therefore more efficient than pure regulations. We show that sectoral TPS programs have high credit prices but low price effects on products and provide strong incentives for upstream innovation and technology transformation. Unlike emissions pricing, however, they do not have a strong output effect: consumers do not bear the full cost of the pollution and do not have incentive to reduce consumption of polluting products. Given that the expected carbon price may be too low to substantially affect transportation demand or technology change, combining TPS with a carbon price may be necessary to drive innovation and achieve a sustained low-carbon transformation in the sector.
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| 3. |
- Hänsel, Martin C., et al.
(författare)
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Climate economics support for the UN climate targets
- 2020
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Ingår i: Nature Climate Change. - : Springer Science and Business Media LLC. - 1758-678X .- 1758-6798. ; 10:August 2020
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Tidskriftsartikel (refereegranskat)abstract
- Under the UN Paris Agreement, countries committed to limiting global warming to well below 2 °C and to actively pursue a 1.5 °C limit. Yet, according to the 2018 Economics Nobel laureate William Nordhaus, these targets are economically suboptimal or unattainable and the world community should aim for 3.5 °C in 2100 instead. Here, we show that the UN climate targets may be optimal even in the Dynamic Integrated Climate–Economy (DICE) integrated assessment model, when appropriately updated. Changes to DICE include more accurate calibration of the carbon cycle and energy balance model, and updated climate damage estimates. To determine economically ‘optimal’ climate policy paths, we use the range of expert views on the ethics of intergenerational welfare. When updates from climate science and economics are considered jointly, we find that around three-quarters (or one-third) of expert views on intergenerational welfare translate into economically optimal climate policy paths that are consistent with the 2 °C (or 1.5 °C) target.
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| 4. |
- Silvestro, Daniele, et al.
(författare)
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Improving biodiversity protection through artificial intelligence
- 2022
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Ingår i: Nature Sustainibility. - : Springer Science and Business Media LLC. - 2398-9629.
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Tidskriftsartikel (refereegranskat)abstract
- Over a million species face extinction, highlighting the urgent need for conservation policies that maximize the protection of biodiversity to sustain its manifold contributions to people’s lives. Here we present a novel framework for spatial conservation prioritization based on reinforcement learning that consistently outperforms available state-of-the-art software using simulated and empirical data. Our methodology, conservation area prioritization through artificial intelligence (CAPTAIN), quantifies the trade-off between the costs and benefits of area and biodiversity protection, allowing the exploration of multiple biodiversity metrics. Under a limited budget, our model protects significantly more species from extinction than areas selected randomly or naively (such as based on species richness). CAPTAIN achieves substantially better solutions with empirical data than alternative software, meeting conservation targets more reliably and generating more interpretable prioritization maps. Regular biodiversity monitoring, even with a degree of inaccuracy characteristic of citizen science surveys, further improves biodiversity outcomes. Artificial intelligence holds great promise for improving the conservation and sustainable use of biological and ecosystem values in a rapidly changing and resource-limited world.
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| 5. |
- Sterner, Thomas, 1952
(författare)
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Higher costs of climate change
- 2015
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Ingår i: Nature. - 0028-0836 .- 1476-4687. ; 527, s. 177-178
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 6. |
- Wagner, Gernot, et al.
(författare)
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Energy policy: Push Renewables to spur carbon pricing
- 2015
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Ingår i: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 525:7567, s. 27-29
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Putting a price on carbon dioxide and other greenhouse gases to curb emissions must be the centrepiece of any comprehensive climate-change policy. We know it works: pricing carbon creates broad incentives to cut emissions. Yet the current price of carbon remains much too low relative to the hidden environmental, health and societal costs of burning a tonne of coal or a barrel of oil1. The global average price is below zero, once half a trillion dollars of fossil-fuel subsidies are factored in.
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| 7. |
- Andersson, David, 1979, et al.
(författare)
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Nu krävs kraftfulla åtgärder mot nötkött och flygresor
- 2015
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Ingår i: Dagens Nyheter. - 1101-2447. ; 2015-02-27
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Svenskarnas globala utsläpp från köttkonsumtion och flygresor motsvarar hälften av de totala utsläppen på hemmaplan. I vår rapport till Naturvårdsverket föreslår vi tydliga styrmedel – som nya skatter – för att begränsa konsumtionen på dessa områden, skriver 14 miljö- och energiforskare.
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| 8. |
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| 9. |
- Azar, Christian, 1969, et al.
(författare)
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The social cost of methane
- 2023
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Ingår i: Climatic Change. - 1573-1480 .- 0165-0009. ; 176:6
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Tidskriftsartikel (refereegranskat)abstract
- A rapid and sustained reduction of methane emissions has been proposed recently as a key strategy to meet the climate targets of the Paris Agreement. The social cost of methane (SCM), which expresses the climate damage cost associated with an additional metric ton of methane emitted, is a metric that can be used to design policies to reduce the emissions of this gas. Here, we extend the DICE-2016R2 model so that it includes an improved carbon cycle and energy balance model as well as methane emissions, methane abatement cost, and an atmospheric methane cycle explicitly to be able to provide consistent estimations of the SCM. We estimate the SCM to lie in the range 880–8100 USD/tCH4 in 2020, with a base case estimate of 4000 USD/tCH4. We find our base case estimate to be larger than the average SCM presented in other studies mainly due to the revised damage function we use. We also estimate the social cost of carbon (SCC) and find that SCM estimates are less sensitive to variations in the social discount rate than the SCC due to the relatively short lifetime of methane. Changes in the parameterization of the damage function have similar relative impacts on both SCM and SCC. Furthermore, we evaluate the ratio of SCM to SCC as an alternative metric to GWP-100 of CH4 to facilitate tradeoffs between these two gases. We find this ratio to lie in the range 7–33 in 2020, with a base case estimate of 21, based on an extensive sensitivity analysis with respect to the discount rate, damage cost, and underlying emission scenarios. We also show that the global warming potential (GWP) and the SCM to SCC ratio are almost the same if the inverse of the effective discounting (in the social cost calculations) is equal to the time horizon used to evaluate the GWP. For comparison, the most widely used GWP, i.e., with a time horizon of 100 years, equals 27, hence in the upper range of the ratio we find using the SCM to SCC ratio.
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| 10. |
- Ekbom, Anders, 1963, et al.
(författare)
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Integrating soil science into agricultural production frontiers
- 2013
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Ingår i: Environment and Development Economics. - : Cambridge University Press (CUP). - 1355-770X .- 1469-4395. ; 18, s. 291-308
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Tidskriftsartikel (refereegranskat)abstract
- This paper integrates soil science variables into an economic analysis of agricultural output among small-scale farmers in Kenya's highlands. The integration is valuable because farmers' choice of inputs depends on both the status of the soil and socioeconomic conditions. The study uses a stochastic production frontier in which the individual farm's distance to the frontier depends systematically on individual factors. We show the importance of including key soil properties and find that phosphorus has a negative output elasticity, suggesting that farms may be using the wrong fertilizer mix. Hence, the central policy implication is that while fertilizers are generally beneficial, their application needs to be based on better soil information. This highlights the importance of strengthening agricultural extension, increased access to markets and more diversified supply of production inputs.
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