I've been at this all day and this is a long one. So you're going to get a brief response.
That's a pretty heady assumption given what we know about volcanic activity, and sudden changes in cooling like occured in the 1700s..
What do you think we know about volcanic activity and sudden changes in cooling?
Shakun and Marcott used a large number of disparate proxies and assembled their data with some very sophisticated functions. The 300 year resolution of their data is quite robust.
No it isn't.. It's based on snail holes, tree rings, and hope. The variance is HUGE.
Marcott used 73 different proxies from all over the planet. Shakun had less available given the time span he was looking into. The variance on such data is going to go up with age. That is unavoidable. Their analysis was robust. They are not statistical idiots.
The largest positive feedback item is water vapor. It is maintained solely by temperature and there is a VERY large sink of the material available. It's half-life is, essentially, infinite. The second feedback IS additional CO2 released from organic sequestration and from decreased CO2 solubility in the warming oceans.
It only works both ways if you have a trigger for each direction. Care to posit such a trigger for cooling?
NOTE 1
Better than the longwave radiation hitting a glaring white surface shrouded by the clearest and coldest of bone-dry air? I think not. And, when you say "roughly 1/2... goes back out to space", what you would more accurately say is "less than half of it goes back out to space".
NOTE 2
I don't mean to offend, but I think Roy Spencer is a demented fool too stuck on himself to produce a valid thesis. He's a classic case of the man with only a hammer seeing all problems as nails.
NOTE 3
You'll have to show me where I did such a thing because I have no such recollection.
I have no problem with a global MWP. I don't believe it happened, but it wouldn't bother me if it did. It has no bearing on the current situation.
NOTE 4
And just how quickly do you believe TSI changes? Has the continuous recent data show high frequency fluctuations? No. So what do you believe was missed earlier? And what is wrong with the intermittent data collected? Do you have some reason to believe it's not valid?
You're grasping at straws. Did you even look at the numbers on the Y-axis of your TSI graph? What's your percent change there? The total range of the data you displayed was 0.001285 the maximum value. If it hadn't been plotted as a whoopee graph the variance would have been invisible. Why do you think the graph I posted showed such a minimal effect? Solar variance is TRIVIAL.
NOTE 5
The idea of deep ocean warming is not a new concept. Deep ocean warming was most certainly considered by many people in the field. It was a common point of discussion. The data were simply not available before now. Some might argue that they're still not available.
Have you read Shakun's 2012 work? It's primary thrust was the discovery that in several historical cases, temperature DID lag CO2 levels. It showed that on several occasions in the paleo record temperatures, elevated by some external forcing, increased CO2 levels in the atmosphere which then produced greater warming than the original effect.
Are you admitting that you do not have the support of evidence?
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TSI didn't halt 20 years ago. It dropped less than a tenth of one percent.
NOTE 6
Foster and Rahmstorf 2012. The current hiatus is the result of aerosol cooling from vulcanism and sequestration of thermal energy in the deep ocean caused by changes to the ENSO cycle. If you were of a mind, you could say that ENSO change was evidence supporting the Gaia Hypothesis.
Actually, I do not. Are you talking about the low end of the latest of the many 11-year cycles visible? If you think that matches the global temperature record for the same period you need a new pair of glasses.
Of course you do.. See anything in the temp record that COULD be a delayed signature of that pause? Of course you do.. Why aren't we getting coherent arguments from the Church of Global Warming..
I'm afraid I once again do not know what you are trying to say.
NOTE 7
Given you SEVERAL examples ---- just in this ONE POST --- where their arguments flail for traction and contradict themselves whenever it seems convienient..
Please make a list and keep them clear and simple... I'm not as adept as once I was.. ;-)
NOTE 8