It's an interesting topic. I took few courses in EAS (Earth and Atomospheric Sciences) about weather and climate etc and a few in Chemistry and the enviornment. All my EAS professors were ranting about how if we don't stop the CO2, NOx, SOx etc. emissions, we're going to die. Increased flooding from polar ice caps melting, areas once fertile will die and then the storms will become so insane it's hard to even fathom it.
The chemistry courses were a lot more conserved. While this possibly could happen they of course took a more scientific approach. Aerosol increases can cause increase in temperature through the net chain reactions and melting of polar ice caps can cause a change in albedo... etc. Then they go on to say while this does increase the temperature of the earth as some models have seen, it is not to say that this is not part of the global scale. Temperatures do fluctuate by a fair degree. Also, while we do have more CO2 emissions, the amount of CO2 sinks have also increased. Regardless, we're not sure if this increase in Global warming gases will do anything at all... but it's better to play it safe than sorry.
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