Global Warming Potential Flashcards
effect of H20 and CO2
increase humidity and global temp
effect of greenhouse gasses
has a high heat capacity and insulates greenhouse
what is the greenhouse gas effect
where the gasses absorb IR and releases it as energy
what property of gasses affect IR absorption
it is based on its ability to vibrate due to a dipole moment
what is radiative forcing
measure of the absorption of IR
what are the 4 factors on how a gas affects global warming
- radiative concentration (trace vs. substantial)
2.what wavelength it absorbs (short wl = higher e) - strength of the absorption
- lifetime of the molecule
CFCs dissociation of C-X is done through
UV rays
CF bond property
absorbs IR and contributes to global warming
What do hydrofluoroethers do
they degrade in degradation products
what do alkenes degrade into
tropospheric aldehydes with are dangerous to breathe in
What contributes to faster degradation (ie. lower GWP)
pi bonds are weaker so they easily break and degrades faster
what is the reason for replacing CFCs
they reduce GWP and adding CH bonds (stronger than CF)
What is the future process of approving CFCs replacements
- make different lengths
- test which one is better
- estimate/predict the ODP & GWP
- new class of CFC??
