Sentences with phrase «co2 effectiveness levels»
The above figures are for the highest CO2 effectiveness levels.
http://illconsidered.blogspot.ru/ Not exact matches
Laboratory evidence suggests that the effectiveness of photosynthesising organisms is badly hindered when CO2 levels drop below about 200ppm (and indeed commercial greenhouses pump in extra CO2 to improve the efficiency of some plant growth — my non-researched background is that tomato plants particularly respond well to this), but the geological evidence suggests that life can tolerate far higher atmospheric CO2 levels.
At that effectiveness level man made CO2 accounts for only.32 degrees C. Double that and you get.64 degrees and double it again the figure is 1.28 degrees.
That's using the highest quoted effectiveness levels for CO2 (30 %).