[url=http://www.worldclimatereport.com/index.php/2009/04/30/what-you-cant-do-about-global-warming/#more-376]Someone at World Climate Report[/url] said:
...It takes ~14,138mmt of CO2 emissions to raise the atmospheric CO2 concentration by ~1 ppm and it takes ~125 ppm to raise the global temperature ~1ºC. So multiplying ~14,138mmt/pmm by ~125ppm/ºC gives us ~1,767,250mmt/ºC.
That’s our magic number—1,767,250....
now, whenever you are presented with an emissions savings that some action to save the planet from global warming is supposed to produce, you can actually see how much of a difference it will really make. Just take the emissions savings (in units of mmt of CO2) and divide it by 1,767,250.
Just for fun, let’s see what we get when we apply this to a few save-the-world suggestions.
According to NativeEnergy.com (in association with Al Gore's ClimateCrisis.net), if you stopped driving your average mid-sized car for a year, you'd save about 5.5 metric tons (or 0.0000055 million metric tons, mmt) of CO2 emissions per year. Divide 0.0000055mmtCO2 by 1,767,250 mmt/ºC and you get a number too small to display on my 8-digit calculator (OK, Excel tells me the answer is 0.00000000000311ºC). And, if you send in $84, NativeEnergy will invest in wind and methane power to offset that amount in case you actually don't want to give up your car for the year. We'll let you decide if you think that is worth it.
How about something bigger like not only giving up your mid-sized car, but also your SUV and everything else your typical household does that results in carbon dioxide emissions from fossil fuels. Again, according to NativeEnergy.com, that would save about 24 metric tons of CO2 (or 0.000024 mmt) per year. Dividing this emissions savings by our handy-dandy converter yields 0.0000000000136ºC/yr. If you lack the fortitude to actually make these sacrifices to prevent one hundred billionth of a degree of warming, for $364 each year, NativeEnergy.com will offset your guilt...