The Intergovernmental Panel on Climate Change (IPCC) assesses information relevant to the understanding of climate change and explores options for adaptation and mitigation. The IPCC reports communicate uncertainty by using a set of probability terms accompanied by global interpretational guidelines. The judgment literature indicates that there are large differences in the way people understand...

The Community Atmosphere Model (CAM), which serves as the atmosphere component of the Community Climate System Model (CCSM), is currently the most computationally expensive CCSM component in typical configurations. Improving performance scalability in CAM has been a challenge, due largely to algorithmic restrictions necessitated by the polar singularities in its latitude-longitude computational...

The most recent report from the United Nations’ Intergovernmental Panel on Climate Change (IPCC) provided compelling evidence on the effect of human release of greenhouse gases from fossil fuels and deforestation on the global climate change. 1 The IPCC estimate that since the mid-19th century there has been an increase in average temperature of 0.6 C, most of this increase occurring at the end...

In the past several decades, the tropospheric westerly winds in the Southern Hemisphere have been observed to accelerate on the poleward side of the surface wind maximum. This has been attributed to the combined anthropogenic effects of increasing greenhouse gases and decreasing stratospheric ozone and is predicted to continue by the Intergovernmental Panel on Climate Change/Fourth Assessment R...

Abstract The Intergovernmental Panel on Climate Change (IPCC) is the United Nations body responsible for assessing science related to climate change. Sixth Report from IPCC Working Group 1 published in August 2021 paints a very sombre picture future. This report was commented news item by International Science Council (ISC) behalf of its members, which IUPAC founding member.

This chapter should be cited as: Collins, M., R. Knutti, J. Arblaster, J.-L. Dufresne, T. Fichefet, P. Friedlingstein, X. Gao, W.J. Gutowski, T. Johns, G. Krinner, M. Shongwe, C. Tebaldi, A.J. Weaver and M. Wehner, 2013: Long-term Climate Change: Projections, Commitments and Irreversibility. In: Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assess...

Good assessment of environmental issues, such as climate change, requires effective communication of the degree of uncertainty associated with numerous possible outcomes. One strategy that accomplishes this, while responding to people’s difficulty understanding numeric probability estimates, is the use of specific language to describe probability ranges. This is the strategy adopted by the Inte...