Global Warming Flashcards
what happens to sunlight?
half is absorbed by the ground, 20% is absrobed by clouds, and the rest is relected
half is absorbed by the ground, 20% is absrobed by clouds, and the rest is relected
what happens to sunlight?
peak frequency of a blackbody
2897/(temp in K)
2897/(temp in K)
Peak frequency of a Blackbocy
What happens when IR is absorbed
the particle will either re-emit it or release the energy as heat.
the particle will either re-emit it or release the energy as heat.
What happens when IR is absorbed
requirements for IR absorbtion
the molecule must vibrate at the same frequency as the light wave, and some form of dipole must be present.
the molecule must vibrate at the same frequency as the light wave, and some form of dipole must be present.
requirements for IR absorbtion
types of vibrations
changes in bond leingth and changes in bond angle.
changes in bond leingth and changes in bond angle.
Types of Vibrations
Spectral window
Ranges where natural greenhouse gasses (Such as CO2) don’t absorb IR
Ranges where natural greenhouse gasses (Such as CO2) don’t absorb IR
Spectral window
waveleingth to wavenumber.
1/(wavelingth in cm)
1/(wavelingth in cm)
waveleingth to wavenumber
CO2 sinks
the only long term sink is deposition on the seaflloor
the only long term sink is deposition on the seaflloor
CO2 sinks
Global Warming potential (GWP)
Measures how likely that chemical is to cause warming, in multiples of carbon’s effect
Measures how likely that chemical is to cause warming, in multiples of carbon’s effect
Global Warming Potential (GWP)
the most important natural greenhouse gass
water, but it’s not important for most global warming calculations
water, but it’s not important for most global warming calculations
the most important natural greenhouse gass
Methane
a GWP of 23, covers a spectral window
a GWP of 23, covers a spectral window
Methane
major factors in determining the effect of a greenhouse gass.
Does it cover a window? How efficiently does it absorb? How long does it stay in the atmosphere?
Does it cover a window? How efficiently does it absorb? How long does it stay in the atmosphere?
major factors in determining the effect of a greenhouse gass.
