The Intergovernmental Panel on Climate Change (IPCC) has recently released its Third Assessment Report (TAR), in which new projections are given for global-mean warming in the absence of policies to limit climate change. The full warming range over 1990 to 2100, 1.4 degrees to 5.8 degrees C, is substantially higher than the range given previously in the IPCC Second Assessment Report. Here we in...

This article is one of several in this special double-issue that reports the views of “users” of IPCC reports. I am a user in the sense that I advise the policy-making community and rely on the IPCC reports to provide me with authoritative views on the state of the science. My principal recommendation for making the IPCC more helpful to the policymaking community is to strive in the Fifth Asses...

Sea-level rise (SLR) from global warming may have severe consequences for coastal cities, particularly when combined with predicted increases in the strength of tidal surges. Predicting the regional impact of SLR flooding is strongly dependent on the modelling approach and accuracy of topographic data. Here, the areas under risk of sea water flooding for London boroughs were quantified based on...

Psychological science can be used to inform climate graph design, resulting in more meaningful and useful graphs for communication, especially with non-scientists. In this study, we redesigned from the Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report (AR5) compared participant attention perceptions between original novel designs pre-/post-surveys, eye-tracking, usability...

Supporting material prepared for consideration by the Intergovernmental Panel on Climate Change. This supporting material has not been subject to formal IPCC review process. Preface The Intergovernmental Panel on Climate Change (IPCC) completed its Second Assessment Report in 1995. The IPCC has three Working Groups that focus on different aspects of climate change, viz. natural science, impacts...

as a direct consequence of warmer temperatures, the hydrologic cycle will undergo significant impact with accompanying changes in the rates of precipitation and evaporation. climate change will cause changes in climate variable such as precipitation, temperature, sunshine hours, wind speed and etc. so as a result of climate variable change, the related variable such as potential evapotranspirat...

Abstract. The occurrence of climate warming is unequivocal, and is expected to be experienced through increases in the magnitude and frequency of extreme events, including flooding. This paper presents an analysis of the implications of climate change on the future flood hazard in the Beijiang River basin in South China, using a variable infiltration capacity (VIC) model. Uncertainty is conside...

Methane lies at the nexus of climate and air quality, being both a major anthropogenic greenhouse gas—causing about one-half of the warming of carbon dioxide—and a precursor of tropospheric ozone pollution. Over the industrial era, atmospheric methane abundances rose from about 720 parts per billion (ppb) (10 mole fraction) to over 1,850 ppb today. Humans have driven this change largely through...

The Intergovernmental Panel on Climate Change (IPCC) has successfully produced four assessment reports since 1990 along with a number of special reports and greenhouse gas inventory guidelines. It has very rigorous and robust procedures and guidelines for preparing the assessment reports largely based on synthesis of peer-reviewed and published scientific literature. IPCC has attracted controve...