Summary: Climate Change Ecology
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2 Climate System and Climate Change
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What are the dynamic elements?
- hydrology
- movement of gasses (water vapor) -
What consists land surface of?
-Consist of vegetation, soil and rock, human structure and ice -
What do light surfaces do?
- reflect sunlight back into space in wavelengths not trapped by greenhouse gasses
- have a cooling effect -
What do dark surfaces do?
- absorb solar energy and reradiate it as heat that may be trapped by greenhouse gases in the atmosphere -
What is a positive feedback loop in the climate system?
- Increase in average global temperature -> reduce the area of ice and snow by melting -> reducing resultant refelctivity of the planet -> warms further -
What is the hydrolic cycle?
- evaporating rom the oceans, condensing as clouds and then raining out over land to form fresh water that flows to the sea
- Increasing temperature accelerates this cycle -
What were major climate changes associated with?
The periodic formation of supercontinents, glacial episodes and volcanism -
What happens during cold climates?
- There is polar ice and ice on land + the average temperature is low
- low CO2 levels -
What happens during warm climates?
- There is no ice and less polar ice
- high CO2 levels in the atmosphere -
What is the Early Eocene Climatic Optimum?
Longer warmer period after PETM
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