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The United Kingdom is today better adapted to climate risks as a result of a sustained programme of research completed by the School into the impacts of climate change on ecological, social and infrastructural systems. This work has had significant and continuing impact on the design and implementation of UK (and international) climate adaptation strategies and policies, especially with regard to flooding, the built environment and water and coastal management. Decision-support tools (such as climate scenarios and options appraisal) and direct policy advice produced by the School have been used by numerous public and private sector organisations to inform and guide their adaptation strategies and investments.
A comparative methodology to assess the impact of climate change in different countries, implemented by Gosling for a report commissioned by the UK Department of Energy and Climate Change (DECC), informed EU negotiations at the 2011 UN climate change conference in Durban, South Africa. The conference concluded with the Durban Platform for Enhanced Action - a `road map' by which global legal agreement on climate change is to be implemented no later than 2015. For the first time, government ministers and their advisers attending an international conference were able to compare the impact of climate change in different countries, including those where scientific institutions have limited research capacity.
Hope's research in developing the PAGE2002 model of climate change has been used extensively by government agencies in the UK and US, as well as the IMF and the international community in order to improve their calculations for global carbon emissions and setting carbon emissions targets. The model was used in the UK government's Eliasch Review, in order to calculate the costs and benefits of actions to reduce global deforestation; by the US Environmental Protection Agency, in order to calculate the marginal impact of one tonne of CO2 emissions; and the IMF, whose calculations using the PAGE2002 model form the basis for their guidance on carbon pricing.
Information on the potential impacts of climate change across the world, and on the effects of policies designed to reduce emissions, is fundamental to inform the development of climate mitigation and adaptation policy. Research conducted at the Unit has been critical to the establishment of a target 80% cut in UK carbon emissions by 2050, as enforced by the Climate Change Act (2008), and provided an affirmation of the relevance of the 2f0b0C global mean temperature rise target central to national and international climate mitigation policy. Research into the global consequences of climate change, particularly for water resources and river flooding, has been used by the Department for Energy and Climate Change (DECC) to assess the impacts of un-mitigated climate change and the effects of different mitigation policy options.
The US government's announcement of an increase in the `social cost of carbon' (SCC) from $24 to $38 a tonne has been made on the basis of research by Richard Tol, of the University of Sussex. Regulation based on the new SCC (a measure of the damage of releasing an additional tonne of carbon into the atmosphere) initially applies to microwave ovens, where it is anticipated to save US consumers billions on their energy bills over coming decades and prevent 38 million tonnes of CO2 emissions. From June 2013, the new SCC applies to any new or revised regulation by any branch of the US government and will eventually affect a wide range of products and investments, including cars, white goods and power plants.
Tol, who works as an adviser to the US Environmental Protection Agency (EPA), has been instrumental in helping the agency to understand the economic impacts of climate change and the methods and assumptions that underpin SCC estimates. The US government's estimates of the SCC are widely used by other decision-makers in the private sector, banks and NGOs and in other countries.
Significant climate change is forecast for the Middle East by the end of this century, leading to — amongst other things — greater water scarcity and falling agricultural productivity. LSE research resulted in the development of the Palestinian Authority's first climate change adaptation strategy. This in turn led to the creation of a Palestinian national committee on climate change and, with the implementation of specific recommendations from this research, the strengthening of climate change planning within the Palestinian Authority. The research also shifted regional priorities for the United Nations Development Programme (UNDP), which subsequently included climate change in its 2011-2013 Strategic Framework as a policy priority for development work in the occupied Palestinian territory.
Exeter's Centre for Energy and the Environment has created novel probabilistic weather files for 50 locations across the UK, consisting of hourly weather conditions over a year, which have been used by the construction industry to test resilience of building designs to climate change. They have already had significant economic impact through their use in more than £3bn worth of infrastructure projects, for example, Great Ormond Street Hospital, Leeds Arena, and the Zero Carbon Passivhaus School. The weather files are widely available to professionals and endorsed by internationally leading building simulation software providers such as Integrated Environmental Solutions.
Research at the University of Exeter identifying potential climate tipping points and developing early warning methods for them has changed the framework for climate change discussion. Concepts introduced by Professor Tim Lenton and colleagues have infiltrated into climate change discussions among policy-makers, economists, business leaders, the media, and international social welfare organisations. Thorough analyses of abrupt, high impact, and uncertain probability events, including estimates of their proximity, has informed government debate and influenced policy around the world. It has also prompted the insurance and reinsurance industry to reconsider their risk portfolios and take into account tipping point events.
UK upland peatlands constitute the world's greatest area of blanket bog, an endangered biome, and are the UK's largest natural habitat, carbon store, and pure water resource. The multi-institutional project "Climate Change Impacts on UK Upland Soils" identified models to predict the response of blanket bog to climatic and environmental changes and drew the attention of diverse stakeholders to the challenge of conserving these peatlands in a warming climate. The results have had impact on public policy and the environment by stimulating and informing debate. Since 2011, they have been (i) used by local and national agencies such as the Forestry Commission, (ii) included in the UK Climate Change Risk Assessment, (iii) cited by the International Union for Conservation of Nature (IUCN) Commission of Enquiry on Peatlands, and (iv) used in evidence for policy making by Defra and the Scottish Parliament.
Knowledge of the changing global temperature has contributed to an international political agreement being reached about the over-arching objective of climate change mitigation policies. The School's scientists have made a crucial contribution to one of only three datasets that reveal changes to the world's average temperature over the last 150 years. These data have been central to each of the five Assessment Reports of the UN's Intergovernmental Panel on Climate Change (IPCC), upon which successive rounds of international climate change negotiations relied and which led, in 2009, to the adoption of limiting global warming to 2 degrees Celsius as an agreed international policy goal.