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Global Climate Change

Global climate change is driven primarily by greenhouse gases, especially CO2 emitted from vehicles and power plants. The sun's energy warms the Earth, but increased greenhouse gas concentrations trap heat in the atmosphere, leading to rising temperatures. Factors like Milankovitch cycles, El Niño, and La Niña also contribute to climate variability. The impacts of climate change include extreme weather, water scarcity, and rising sea levels. It's crucial to examine the causes, whether natural or man-made, and to explore solutions that do not harm the economy.

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Global Climate Change

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Presentation Transcript

  1. Global Climate Change • Cause of climate change • Greenhouse gases

  2. Greenhouse Gases • The gases (in particular CO2)are released from cars, trucks, power-plants,… • As the sun shines to the earth, the UV rays bounce back to space and the UV Rays are then trapped in the atmosphere. The atmosphere’s water particles heat up raising the earth’s temperature.

  3. Other sources • Milankovitch Cycles – 3 types of periodic changes in the Earth’s rotation and orbit around the sun.

  4. Milankovitch Cycles

  5. Milankovitch Cycles • Axial Wobble • Variation of tilt • Variation of orbit

  6. El-Nino & La Nina

  7. Thermohaline Circulation • Aka Thermohaline conveyor belt

  8. Impact of Global Climate Change • Too mild winters which can cause water shortages (no snow to melt) • Too hot of summers • Some places will get too cold rather too hot • Glaciers will melt, which could lead to interruption to the Thermohaline Circulator • Water levels could rise • Storms will have greater impact such as Katrina

  9. Climate change? • Must consider both sides of climate change • Is it happening? • Is it man-made or cyclical? • Regardless of belief, can things be reduced without hammering the economy? • Are our alterations causing more problems?

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