What exactly emits the most CO2 into the atmosphere?
2007-03-28 07:18:43 · 7 answers · asked by Cheryl W 1 in Science & Mathematics ➔ Weather
Well, background levels (pre industrial revolution) were in the mid 200 ppm by most accounts. Now we are up to nearly 400 ppm, so about half.
What we do know is CO2 is 30% higher than it has been for the past 650,000 years.
The biggest contributers are industry and transportation.
2007-03-28 07:27:53 · answer #1 · answered by QFL 24-7 6 · 2⤊ 3⤋
Temperature fluctuations in the world's oceans likely have the greatest influence on the atmospheric CO2 concentration. Over the past 150 years or so global temperatures have risen about 1C - this following a roughly 400 year long period of cooler temperatures called the Little Ice Age. (Water's ability to dissolve gases is inversely proportional to its temperature, albeit a non-linear relationship)
Atmospheric CO2 levels have risen from about 330 to 360 parts per million over this period. Scientists estimate that about 10% of the 30 ppm bump is due to man's activities. This makes the man caused CO2 contribution to come in at around 1-2% of the total atmospheric CO2.
2007-03-28 14:30:44 · answer #2 · answered by Flyboy 6 · 1⤊ 4⤋
Its actually closer to .015%
But he is right, most of the CO2 in the atmosphere is created by dead plants, leaves, etc.
This "man-made" global warming thing is definatley scienctifically proven wrong.
-AND-
there was more CO2 in ppm, in the year 1250 than there is today
did they have cars or the kind of industrialization we do today?
nope
this proves that at least 99.5% of CO2 emmisions are not caused by humans
The global warming isn't even caused by greenhouse gases.
If it were caused be greenhouse gases, the trophosphere would be much warmer than the earth surace, and its not, the surface today is much warmer than the trophosphere suggesting that its either because of alot of solar activity from the sun, or just naturally.
But NO POSSIBLE way is it man made.
2007-03-28 18:53:17 · answer #3 · answered by unitedstatesairforce555 2 · 4⤊ 3⤋
These answers are proof that you should look for a better explanation then to be looking here.
2013-11-11 12:58:09 · answer #4 · answered by OTL Player 2 · 0⤊ 0⤋
.02% Most of it comes from animal flauance, feces, plant life and other naturally occuring phenom.
2007-03-28 14:27:37 · answer #5 · answered by Sane 6 · 4⤊ 0⤋
http://www.youtube.com/watch?v=XttV2C6B8pU
2007-03-28 17:25:31 · answer #6 · answered by GREAT_AMERICAN 1 · 0⤊ 2⤋
100 percent
2007-03-28 14:25:42 · answer #7 · answered by The_good_guy 3 · 0⤊ 8⤋