The Canadian Centre for Climate Modelling and Analysis third generation atmospheric general circulation model (AGCM3) is described. The discussion summarizes the details of the complete physics package emphasizing the changes made relative to the second generation version of the model. AGCM3 is the underlying model for applications which include the IPCC fourth assessment, coupled atmosphere-oc...

We conducted detailed resurveys of a montane mammal, Urocitellus beldingi, to examine the effects of climate change on persistence along the trailing edge of its range. Of 74 California sites where U. beldingi were historically recorded (1902-1966), 42 per cent were extirpated, with no evidence for colonization of previously unoccupied sites. Increases in both precipitation and temperature pred...

F. St-Hilaire, J. Wu, N. T. Roulet, S. Frolking, P. M. Lafleur, E. R. Humphreys, and V. Arora Department of Geography, McGill University, 805 Sherbrooke Street West, Montreal, QC H3A 2K6, Canada The Global Environment and Climate Change Centre, McGill Univ., Montreal, QC, Canada McGill School of Environment, McGill University, Montreal QC, Canada Institute for the Study of Earth, Oceans, and Sp...

A GCM cloud microphysics parameterization is tested and improved using the CCCMA single-column model with cloud properties obtained at the Surface Heat Budget of the Arctic Ocean experiment (SHEBA) during the period of November 1997 to September 1998. The ECMWF reanalysis water vapor profile is scaled with rawinsonde data so that the new relative humidity profiles are compatible with rawinsonde...

El modelado de escenarios cambios climáticos utilizando sistemas información geográfica para estimar la resiliencia cobertura vegetal es una herramienta útil proyectar impactos futuros e implementar estrategias conservación o manejo. En el presente trabajo asociamos espacialmente biodiversidad del Suroeste México con su capacidad adaptarse a los efectos cambio climático. Para analizar esta asoc...

Abstract. The Canadian Earth System Model version 5 (CanESM5) developed at Environment and Climate Change Canada's Centre for Modelling Analysis (CCCma) is participating in phase 6 of the Coupled Intercomparison Project (CMIP6). A 40-member ensemble CanESM5 retrospective decadal forecasts (or hindcasts) integrated 10 years from realistic initial states once a year during 1961 to present using p...

The Arctic Oscillation (AO) and the Antarctic Oscillation (AAO) are the leading modes of high-latitude variability in each hemisphere as characterized by the first EOF of mean sea-level pressure. Observations suggest a recent positive trend in the AO and it is speculated that this may be related to global warming. The CCCma coupled general circulation model control simulation exhibits a robust ...

Background: Agriculture is the most susceptible sector to climate change related hazards in Ethiopia. Any minor change in temperature from the normal conditions imposes a severe challenge on the agricultural dependent people of Ethiopia. This research work, entitled ‘Ethiopian Summer Temperature from the Global Circulation Model Output Data and its Outlooks’ has been conducted to fill such know...

[1] The use of a more physically based parametrisation scheme for sub-grid scale ocean mixing produces a more spatially uniform surface warming in the Southern Hemisphere in transient global warming simulations of the CCCma climate model than when an older scheme is used. Here we examine the effect of this different warming pattern on the tropospheric circulation response, by comparing simulati...