Hey
@Scrubber_steve im curious on your thoughts on how we, the humans, should proceed, in your opinion. Should we go on, business as usual, cause we can't effect the global temperature anyway or should we do something/try something?
Hey Sallstrom; I haven't said that we can't affect the global temperature. What I have said, is, any recent warming cannot be attributed to greenhouse gasses, or natural variability because there is no way to measure it to make the distinction. So, any claims that humans are responsible for most of the warming is NOT a scientific statement, but a political statement used to enforce policy for emissions reduction.
The mainstream science tells us that a doubling of atmospheric CO2 will increase radiative forcing by a maximum of 3.7w/m2, & this results in an increase in global average temperature of only 1C max.
The mainstream science bases warming on a doubling of CO2 because of its logarithmic effect. Meaning, every further doubling of CO2 is adding twice as much CO2 as the previous doubling for only an equal effect = 1C. So it just gets doubly harder to warm the atmosphere.
300ppm to 600ppm = 1C.
600ppm to 1200ppm = 1C.
1200ppm to 2400ppm = 1C.
Computer models give a range of projections for warming for a doubling of CO2 (equalibrium climate sensitivity). 1.5C to 4.5C. Great disagreement. The reason for the model spread, & why they are greater than 1C is due to 'hypothesised net positive feedback" of which is mainly hypothesised positive water vapour feedback, as the IPCC state that it is the strongest feedback by far. This and cloud feedback are responsible for model spread.
But, if water vapour feedback was in reality negative, not positive, there would likely be less than 1C of warming for a doubling of CO2 because net feedback would in reality be negative, not positive.
Measurement of atmospheric temperature & humidity at several altitudes, by radiosondes, & of temperature by the satellites has shown that the hypothesis of positive water vapour feedback is wrong, & appears to be negative. Mid/upper tropospheric water vapour content has not increased as the positive water vapour feedback hypothesis stipulates, but instead decreased.
The negative lapse rate, or greater rate of warming in the mid/upper troposphere than at the surface, that is also stipulated by the positive water vapour feedback hypothesis, is also the opposite. Warming has instead been greater at the surface than in the upper troposphere.
Most, but not all models also hypothesis positive cloud feedback. They have no evidence to back this up either.
Consider the following chart. There is no correlation between CO2 levels & global temperature. CO2 does not drive global temperature, if anything it the other way round due to ocean warming & cooling
Would be interesting to hear you thoughts.
The earth has greened, & food productionis at an all time high due to increased atmospheric CO2, plant fertiliser.
In any case, if the world wants to decrease CO2 emissions, use nuclear.
There's some of my thoughts
