ENV100Y5 Lecture : pollution

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ENV100Y5 Full Course Notes
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These lectures will help you understand: earth"s atmosphere, weather and atmospheric circulation. Indoor and outdoor air pollution: stratospheric ozone depletion, acidic deposition and its consequences. Outdoor air pollution can affect climate and harm people and ecosystems: air pollutants = gases and particulate material added to the atmosphere. Example; sulphur dioxide: outdoor (ambient) air pollution. Has decreased in recent decades due to government policy and improved technologies in developed countries. Developing countries and urban areas still have significant problems: many pollutants are aerosols, which vary in both time and space (cid:149) (cid:149) (cid:149) (cid:149) Hundreds of millions of tonnes of dust are blown westward across the. Atlantic ocean by trade winds every year: waves breaking. Major source of salt moving from ocean to land-based reservoirs. Fires: pollutes atmosphere with soot and gases, over 60 million hectares of forests and grasslands burn each year (cid:149) (cid:149) (cid:149) (cid:149) (cid:149) (cid:149, fires are made more severe by human action.

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