David L. Roberts

TL;DR: In this paper, the authors examined the anthropogenically forced climate response over the historical period, 1860 to present, and projected response to 2100, using updated emissions scenarios and an improved coupled model (HadCM3) that does not use flux adjustments.

TL;DR: In this article, the authors used a coupled atmosphere/ocean general circulation model to simulate the climatic response to natural and anthropogenic forcings from 1860 to 1997, and found that the early twentieth century warming can best be explained by a combination of warming due to increases in greenhouse gases and natural forcing, some cooling due to other anthropogenic forcing, and a substantial, but not implausible, contribution from internal variability.

TL;DR: In this paper, the effects of anthropogenic sulphate aerosol on cloud albedo and on precipitation efficiency were investigated using a new version of the Hadley Centre climate model.

TL;DR: In this article, the results from a World Climate Research Program workshop on representations of scavenging and deposition processes in global transport models of the atmosphere were reported, and 15 models were evaluated by comparing simulations of radon, lead, sulfur dioxide, and sulfate against each other, and against observations of these constituents.

TL;DR: In this paper, the authors report on results from a World Climate Research Program workshop on representations of scavenging and deposition processes in global transport models of the atmosphere and provide a survey on the simulation diVerences between models.