Climate change
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Abstract
ide (C02), methane (CH4) and nitrous oxide (N20). The nature of the effect, and possible anthropogenic influences on it, have been the subject of much debate over the last few years. The likelihood and extent of anthropogenic changes were considered by the Intergovernmental Panel on Climate Change (IPCC, 1990) in its first assessment report, and a supplementary report in 1992 (Houghton et al, 1992). This led to the ratification of a Framework Convention on Climate Change (1992). The UK government’s response was set out in Climate Change: The UK Programme (1994). It is generally accepted that human activities have increased atmospheric levels of these gases, and that this could pose a threat to the stability of the global climate, although the extent of such changes is still uncertain.