Climate Change

Climate Change - SCI Notes 4/12 Laposata Climate Change PDF...

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SCI Notes 4/12 Laposata Climate Change PDF (Sun and Earth) The Natural Greenhouse Effect o It’s NOT bad Elevates temperature at earth’s surface Makes earth warmer than it would be without it Allows liquid water to persist Water allowed evolution of life o PDF (Earth’s Atmospheric Layers) Wavelength and Radiation o PDF (Wavelength and GH Effect) o PDF (Electromagnetic Radiation) Natural Greenhouse gases o Atmosphere traps long (exit) wavelengths, but not short (entry) wavelengths o Molecules that trap heat in G.H. effect: Water vapor and small droplets 97% natural GH effect “Normal” levels of CO 2 : Majority of remainder PDF (Natural Greenhouse Gases) o So What’s the problem? Human activities affect system Affect system so it traps more heat Raises temps at the earth’s surface
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o What causes this? Increasing CO 2 concentrations in atmosphere Adding other “greenhouse gases” to atmosphere Climate Change o
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Climate Change - SCI Notes 4/12 Laposata Climate Change PDF...

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