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Robert Brown says:
Well, it must be really embarrassing that temperature trends are refusing to cooperate with CO_2 as a primary driver, at least as a simple driver. Just think how embarrassing it will be if a mix of phase changes in primary decade-timescale oscillations plus strongly reduced solar activity relative to the 20th century produce a serious NH cooling trend over the next twenty four months.
Then imagine how embarrassing it will be if CO_2 levels drop, not because anthropogenic CO_2 is being produced more slowly but because the average SST drops and CO_2 absorption in the thermocline picks up. One wonders if even the last 200 years are enough for the ocean to have recovered from heat lost in the LIA.
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Marc77 says:
First, it is not enough to find potential problems with satellites. You have to explain why the satellites have measured what they have measured and you have to prove that it is not incompatible with your hypothesis.
Second, here is the graph above detrended by 1/3 degree Celsius for 1/3 of a century:
http://www.woodfortrees.org/plot/uah/detrend:0.333/plot/uah/detrend:0.333/mean:13
So, removing a trend of 1 degree Celsius per century seems to remove all of the perceived trend. Is it possible that a trend of 1/2 a Celsius per century comes from the cool Pinatubo in the first half and the 1998 super El-Nino in the second half? If you take the sine function from 0 to 2pi radians. Since it starts with the positive phase then the negative phase, you would find a negative trend even if this function does not have a trend in the long run. It would be interesting if someone knew a way to remove the artificial trend that comes from particular events.