Tornadoes and hurricanes at a low thanks to increased CO2 levels? A Limerick.

Tornadoes and hurricanes: At a new low (1) (2)

The CO2 calms them, as far as we know (3)

So the crop yields increase (4)

And the starving will cease. (5)

More CO2, please, let the trees and plants grow. (6)

(1)    Total tornado activity in 2012 is way below normal, See fig.

(2)    The number of days since a major hurricane hit the U.S. mainland is at a record, 2523 days (and counting) since hurricane Wilma hit the Gulf Coast in 2005. This is the longest stretch since hurricane tracking begun.

(3)    This point is controversial. According to IPCC there is a positive feedback between greenhouse gases and temperature increase. This assumption is proven false by the absence of global temperature increase since 2001.

The opposite argument is true. There is a strong negative feedback between increasing CO2 and temperature, so the net effect is that the tropic experience almost no temperature increase, the Northern Hemisphere an increase of 0.4 degrees, and the Southern Hemisphere an increase of about 0.2 degree Celsius for a doubling of the CO2 concentration. This increase is concentrated mostly around the poles causing less of a temperature gradient between the poles and the equator, which give the storms less energy to sustain them.

Total hurricane energy is on a decline since the active years 2005-2006. 2012 is no exception with only one major hurricane (for 12 hours) way out in the Atlantic.

(4)     There is a strong correlation between CO2 concentration and crop yields, with a 30 to 70 % increase for a doubling of CO2.

(5)    Assuming a 50% average increase in yield the world can feed two billion more mouths with a doubling in CO2.

(6)    In addition, when CO2 increases the plants use photosynthesis more efficiently, needing less water to produce a crop making even arid areas able to yield a crop.


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Retired engineer, graduated from Chalmers Technical University a long time ago with a degree in Technical Physics. Career in Aerospace, Analytical Chemistry, computer chip manufacturing and finally adjunct faculty at Pennsylvania State University, taught just one course in Computer Engineering, the Capstone Course.

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