Bellcurve,
Very confused from NASA.
A lot of guesswork going back 800,000 years of course but sounds authoritative ad makes a dramatic graph .
They talk about greenhouse gases but then switch to only one co2.
Don`t mention water vapour ( cloud cover ) which is of much greater effect.
But of this minimal one deg C warming since 1950 (despite vastly increased co2 ) how much of that one degree can be attributed to co2 emissions.
Perhaps .2 deg c or less !
However CO2 works well in the closed laboratory test tube to warm NASA would surely agree .
La Nina and El Nino changes are more important, more immediate and greater in creating temperature changes than co2.
Cloud cover changes (water vapour ) also have a greater effect and N2O greater greenhouse effect then co2
These perhaps contribute .5deg C . or more .
Urban heat island effect on measuring sites the rest .
Poor co2 relatively impotent after allowing for nature`s balancing compensations.
A convenient red herring to blame and shift trillions in compensations from the destructive, sinful capitalist economies to the long suffering,ruined third world corruptcracies.
