ENV100Y5 Lecture : env100 note 46.docx

• School: UTM
• Department: Environment
• Course: ENV100Y5
• Professor: murk

Document Summary

The ipcc summarizes evidence of climate change and predicts future impacts. Trend = a pattern that persists within a data set, even after short-term fluctuations and anomalies have been accounted for. Intergovernmental panel on climate change (ipcc: 4th assessment report (2007, consensus of scientific climate research from around the world, trends in surface temperature, precipitation patterns, snow and ice cover, sea levels, storm intensity, and other factors. Ipcc report iv concludes that average surface temperatures have been rising since. 1906, with most of the increase occurring in the last few decades. Most of the observed increase in globally averaged temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations. ipcc iv, 2007, p. 8. Carbon dioxide is the anthropogenic greenhouse gas of primary concern. Not the most potent greenhouse gas, but it is abundant: major contributor to the anthropogenic or enhanced greenhouse effect.