ENV100H1 Lecture Notes - Lecture 43: Shortwave Radio, Smog, Passive Smoking

• School: UTSG
• Department: School of Environment
• Course: ENV100H1
• Professor: Barbara Murck

Document Summary

Primary pollutants come mainly from burning fossil fuels. Natural, unpolluted rain is a little acidic. Human activity has changed the balance though. Disaster landscape in 70s: mining and refining caused, nickel, nasa sent them to train there as if it was the moon. Superstack to disperse emissions, but pollutants were just moving farther away, going somewhere else. Later company installed scrubbers to clean emissions in the 80s. Longitudinal studies: to understand long-term processes in the environment. Experimental lakes area in ontario: studied lake acidification, unhappy thing because federal government wanted to tear it down, still running though due to ontario government and isd, without federal funding, very important site for research. Industrial sources, smokestacks, etc. producing primary pollutants: sulfur dioxide, nitric oxide. Secondary pollutants: sulfuric acid, nitric acid. Accelerates leaching of base cations from soil: affects how soil can carry out processes like nitrogen fixation. Causes calcium to leach from needles of red spruce.