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Stern Review : ウィキペディア英語版
Stern Review

The Stern Review on the Economics of Climate Change is a 700-page report released for the British government on 30 October 2006 by economist Nicholas Stern, chair of the Grantham Research Institute on Climate Change and the Environment at the London School of Economics (LSE) and also chair of the Centre for Climate Change Economics and Policy (CCCEP) at Leeds University and LSE. The report discusses the effect of global warming on the world economy. Although not the first economic report on climate change, it is significant as the largest and most widely known and discussed report of its kind.〔
The Review states that climate change is the greatest and widest-ranging market failure ever seen, presenting a unique challenge for economics.〔 The Review provides prescriptions including environmental taxes to minimise the economic and social disruptions. The Stern Review's main conclusion is that the benefits of strong, early action on climate change far outweigh the costs of not acting. The Review points to the potential impacts of climate change on water resources, food production, health, and the environment. According to the Review, without action, the overall costs of climate change will be equivalent to losing at least 5% of global gross domestic product (GDP) each year, now and forever. Including a wider range of risks and impacts could increase this to 20% of GDP or more, also indefinitely. Stern believes that 5–6 degrees of temperature increase is "a real possibility."
The Review proposes that one percent of global GDP ''per annum'' is required to be invested to avoid the worst effects of climate change. In June 2008, Stern increased the estimate for the annual cost of achieving stabilisation between 500 and 550 ppm CO2e to 2% of GDP to account for faster than expected climate change.
There has been a mixed reaction to the Stern Review from economists. Several economists have been critical of the Review, for example, a paper by Byatt ''et al.'' (2006) describes the Review as "deeply flawed". Some economists (such as Brad DeLong and John Quiggin) have supported the Review. Others have criticised aspects of Review's analysis, but argued that some of its conclusions might still be justified based on other grounds, e.g., see papers by Martin Weitzman (2007)〔 and Dieter Helm (2008).〔
==Summary of the Review's main conclusions==
The executive summary〔 states:
*The benefits of strong, early action on climate change outweigh the costs.
*The scientific evidence points to increasing risks of serious, irreversible impacts from climate change associated with business-as-usual (BAU) paths for emissions.
*Climate change threatens the basic elements of life for people around the world – access to water, food production, health, and use of land and the environment.
*The impacts of climate change are not evenly distributed – the poorest countries and people will suffer earliest and most. And if and when the damages appear it will be too late to reverse the process. Thus we are forced to look a long way ahead.
* Climate change may initially have small positive effects for a few developed countries, but it is likely to be very damaging for the much higher temperature increases expected by mid-to-late century under BAU scenarios.
*Integrated assessment modelling provides a tool for estimating the total impact on the economy; our estimates suggest that this is likely to be higher than previously suggested.
*Emissions have been, and continue to be, driven by economic growth; yet stabilisation of greenhouse gas concentration in the atmosphere is feasible and consistent with continued growth.
*'Central estimates of the annual costs of achieving stabilisation between 500 and 550ppm CO2e are around 1% of global GDP, if we start to take strong action now. () It would already be very difficult and costly to aim to stabilise at 450ppm CO2e. If we delay, the opportunity to stabilise at 500-550ppm CO2e may slip away.'〔
*The transition to a low-carbon economy will bring challenges for competitiveness but also opportunities for growth. Policies to support the development of a range of low-carbon and high-efficiency technologies are required urgently.
*Establishing a carbon price, through tax, trading or regulation, is an essential foundation for climate change policy. Creating a broadly similar carbon price signal around the world, and using carbon finance to accelerate action in developing countries, are urgent priorities for international co-operation.
*Adaptation policy is crucial for dealing with the unavoidable impacts of climate change, but it has been under-emphasised in many countries.
*An effective response to climate change will depend on creating the conditions for international collective action.
*There is still time to avoid the worst impacts of climate change if strong collective action starts now.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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