Climate Change Lesson 6 Indicators of Climate Change SNC2P Nicole Klement.
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Post on 30-Dec-2015
<ul><li><p>Climate Change Lesson 6Indicators of Climate ChangeSNC2P Nicole Klement</p></li><li><p>Before We Move on..</p><p>Let us clarify a few key terms.</p></li><li><p>Climate Change & Global Warming </p><p>are not the same thing</p></li><li><p>Global WarmingRefers to the earths atmospheric temperature increasing</p><p>(linked to increase in the greenhouse gases and a stronger greenhouse effect)</p></li><li><p>Climate change</p><p>Refers not only temperature change over a longer period of time but also changes in precipitation (rain, snow), wind, storms.This concept includes global warming but also MANY OTHER factors. </p></li><li><p>Greenhouse Gases Layer& The Ozone Layer</p><p>are not the same thing</p></li><li><p>Green House Gases Layer The main greenhouse gases in the greenhouse gas layer act as insulators for the planet. Keeping our temperatures moderate constant. ozone water vapour Freon and chlorofluorocarbons (CFCs) methane nitrogen oxide carbon dioxide Notice OZONE is a greenhouse gas. BUT it also forms its own layer</p></li><li><p>Natural OzoneOzone (O3) The ozone layer is just above the troposphere. Separate from the greenhouse gas layer. This layer of Ozone gas acts as the earths sunscreen. </p></li><li><p>Indicators of Climate ChangeLet us now look at the indicators that are used to study this global crisis</p></li><li><p>Indicators of Climate ChangeThe climate of the Earth is constantly altering over time, but the more recent changes are not considered natural changes in the climate. The ice age is an example of a natural change in climate over time. Today's changes are occurring faster and with greater magnitude than previous climate changes. </p></li><li><p>Did you Know?Did you know that since the Industrial Revolution carbon has increased by 30%, methane by 145%, and nitrous oxide by 15%? These are greenhouse gases that trap heat during the greenhouse effect. </p></li><li><p>Indicators of Canadian Climate ChangeIncrease in Temperaturealmost every part of Canada except the Northeast region is warmer at the end of the twentieth century compared to the beginning of the century </p><p>Increase in precipitation-most parts of Canada have become wetter (a 5% to 35% increase in precipitation). more precipitation is falling as rain compared to snow </p></li><li><p>Indicators of Canadian Climate Changesea surface temperatures have risen</p><p>Canada's west coast has rising sea levelsAtlantic, Pacific, Beaufort Sea coastal areas are more vulnerable to flooding and erosion </p></li><li><p>Indicators of Canadian Climate Changeshrinking glaciers - the glaciers on the eastern slopes of the Rocky Mountains have lost 25 to 75% of their mass since 1850Native species at risk- polar bear survival is more difficult on the western side of Hudson Bay - hunting, fishing, and winter travel for humans has become less reliable and more dangerous </p></li><li><p>Indicators of CanadianClimate Changedecrease in sea ice- the area of the Canadian Arctic with permanent sea ice has decreased by a quarter since the end of the 1960s change in migratory patterns- several species of birds are arriving earlier in the spring and leaving later in the fall - some European birds are not migrating </p></li><li><p>Did you know?</p><p>Did you know that Canada has warmed 1o C over the last century? The 1980s and 1990s were the warmest decades in Canada's records. </p></li><li><p>Carbon Dioxide Absoption Labhttp://www.planetseed.com/node/19776</p></li></ul>
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