The Earth System Modelling Group (ESMG) is part of the Department of Atmospheric and Oceanic Sciences, in Burnside Hall of McGill University, situated in downtown Montreal, QC, Canada. The group is under the direction of Lawrence A. Mysak, who is also a member of the Global and Environmental Climate Change Centre, the successor of the Centre for Climate and Global Change Research.

The main goal of the research in the ESMG is to develop and apply reduced complexity models of the Earth system to better understand decadal and longer term climate variability and change. Analysis of climate data and data-model intercomparison studies are also important activities of the ESMG. For further information, see Research.

The Arctic Research Consortium of the U.S. (ARCUS), based in Fairbanks, Alaska, was formed in 1988 as a nonprofit member consortium of educational and scientific institutions that have a substantial commitment to arctic research. ARCUS facilitates discussion of important arctic research initiatives, produces science reports with research community recommendations for arctic science priorities, and distributes information resources to the arctic research community. ARCUS activities are funded through member dues and contracts and grants with federal and private entities.

Founded within the College of Earth and Mineral Sciences in 1986, the Earth System Science Center (ESSC) maintains a mission to describe, model, and understand the Earth's climate system. ESSC is one of seven centers supported by the Earth & Environmental Systems Institute.

The climate can be viewed as a complex interacting set of components including the oceans, atmosphere, cryosphere, and biosphere. Within the ESSC, we are engaged in studies that aim to understand both these individual components, and the interactions between them.

RealClimate is a commentary site on climate science by working climate scientists for the interested public and journalists. We aim to provide a quick response to developing stories and provide the context sometimes missing in mainstream commentary. The discussion here is restricted to scientific topics and will not get involved in any political or economic implications of the science. All posts are signed by the author(s), except ‘group’ posts which are collective efforts from the whole team. This is a moderated forum.

WCRP improves climate predictions and our understanding of human influence on climate through observations & modelling of the Earth system and the policy-relevant assessment of climate conditions
Significant progress in understanding and projecting climate change has been made over the last decade. However, large uncertainties remain, particularly in the determination of the rate of climate change, the impacts on regional scales where society and environment are most vulnerable and the occurrence of extremes. Reduction of these uncertainties requires filling significant gaps in observational programmes and understanding, and improved models for projection of climate change, both globally and regionally. This information is critical to enable individual nations to plan for and adapt effectively to climate and global change.