GLY 102, Week 1 of notes
GLY 102, Week 1 of notes GLY 102
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This 2 page Class Notes was uploaded by Nicole Shaughnessy on Sunday January 31, 2016. The Class Notes belongs to GLY 102 at University at Buffalo taught by Jason Briner in Spring 2016. Since its upload, it has received 83 views. For similar materials see Climate Change in Geology at University at Buffalo.
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Date Created: 01/31/16
1/26/16 Climate Change- Spring 2016 Earth System Science Atmosphere- contains all the air in Earth’s system Geosphere- rocks, land Biosphere Hydrosphere- water, ice, glaciers, snow 1/28/16 Climate Change Overview 1. What is climate? 2. What is global warming? 3. What are the effects of climate change? What is climate? How does it differ from weather? Climate is long term and weather is short term. Weather= hours to weeks Climate= months to millennia Atmosphere and climate Weather- a description of short term physical conditions of an atmosphere Climate- a description of the long term weather pattern in a particular area Common climate metrics: Temperature Humidity Wind Rainfall What affects air temperature? (at climatic time scales) Unequal amounts of solar radiation Tilted axis results in seasons. Certain times of the year, an area is not facing the sun. The vertical ray of sun imparts more energy per area. An oblique ray imparts less energy. An oblique ray is spread across a larger area and that area receives less energy. Unequal heating of land and water Land has a lower specific heat than water. It takes less energy to heat up land than water. It can get hotter and cool much faster than water. Continental sites have much more drastic changes in temperature and maritime sites have less drastic changes in temperature. Altitude Higher elevations are cooler and lower elevations are warmer. Geography (winds and ocean currents) There is more solar energy at the equator and less solar energy at the poles. At the equator, the air is warmer and wants to rise and bring some of the energy to the poles. This causes atmospheric circulation. Ocean currents are caused by the atmospheric circulation. Sinking cool water and rising warm water help create ocean currents. The Greenhouse Effect The Earth’s atmosphere keeps it around 30 degrees Celcius warmer than it otherwise would be Due to heat-trapping gasses in our atmosphere. The Earth’s Climate system is very complex. What is Global Warming? Surface temperature anomaly- graphs show that temperature began to increase around the 1900’s. This could be caused by the increase of CO2 gasses in our atmosphere There is a strong belief that humans have somewhat of an impact on global warming. 97 out of 100 climate experts think humans are changing global temperature. The media has a large impact on the public’s thoughts and opinions on our influence on climate change. What are the effects of climate change? Changes in sea level, melting glaciers, change in weather patterns, etc. Major effects of global warming are fire, drought, and storminess. Sea level rise: the Cryosphere Changes in ice sheets
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