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SUMMARY
It has been shown above that low altitude cloud cover closely follows cosmic ray flux; that the galactic cosmic ray flux has the periodicities of the glacial/interglacial cycles; that a decrease in galactic cosmic ray flux was coincident with Termination II; and that the most likely initiator for Termination II was a consequent decrease in Earth’s albedo.
The temperature of past interglacials was higher than today most likely as a consequence of a lower global albedo due to a decrease in galactic cosmic ray flux reaching the Earth’s atmosphere. In addition, the galactic cosmic ray intensity exhibits a 100 kyr periodicity over the last 200 kyr that is in phase with the glacial terminations of this period. Carbon dioxide appears to play a very limited role in setting interglacial temperature.
The vast majority, yes. But lets say you're right. Let's say that CO2 levels are rising because temperatures are rising. What's causing temperatures to rise? Is the Sun getting hotter? How much?
Given that in past interglacial periods carbon has risen along with temperature, and yet we are led to believe that ALL the increase since industrialization is attributable to man.
Your understanding is lacking. Do your reference materials include stellar evolution and how it relates to irradiance?
It is my understanding that the claim comes from "since co2 levels were high, it stands to reason that solar levels were lower" ... in other words, an assumption. I have found nothing in my reference materials to suggest anything more.
Does your reference material include changes in cosmic ray flux in the past century? What does that data say about it? Here's some research which addresses it:
In relation to co2 and it's influence on climate I present this paper.
We conclude that cosmic rays and solar activity which we have examined here, in some depth, therefore cannot be a very significant underestimated contributor to the global warming seen in the twentieth century.
Right. Climate models are not concerned with short term occurrences. They deal with multi-decadal trends.
They have not predicted the increase of sea ice in Antarctica, nor did they predict the single year increase of sea ice (year to year, 2013-2014) in the Arctic.
originally posted by: Phage
a reply to: bbracken677
When you say "reflect heat" do you mean re-emit infrared radiation? Because heat, which is molecular movement, is not "reflected". The "reflection" of infrared is not glossed over, it is the primary factor in determining radiative forcing for greenhouse gasses.
does it not also stand to reason that increase co2 would also result in increased albedo?
originally posted by: bbracken677
a reply to: Kali74
And I did not say that man has not contributed anything either. It is clear and undeniable that he has.
Oddly, man is blamed for the increase in co2, and yet man's contribution to the greenhouse effect is a whopping 0.25%. Yes, one quarter of one percent.
Richard Muller, Founder and Scientific Director of Berkeley Earth, notes “Much to my surprise, by far the best
match was to the record of atmospheric carbon dioxide, measured from atmospheric samples and air trapped in
polar ice.” He emphasizes that the match between the data and the theory doesn’t prove that carbon dioxide is
responsible for the warming, but the good fit makes it the strongest contender. “To be considered seriously, any
alternative explanation must match the data at least as well as does carbon dioxide.”
In its 2007 report the IPCC concluded only that “most” of the warming of the past 50 years could be attributed to
humans. It was possible, according to the IPCC, that increased solar activity could have contributed to warming
prior to 1956. Berkeley Earth analyzed about 5 times more station records than were used in previous analyses,
and this expanded data base along with its new statistical approach allowed Berkeley Earth to go about 100 years
farther back in time than previous studies. By doing so, the Berkeley Earth team was able to conclude that over
250 years, the contribution of solar activity to global warming is negligible.
Some of the scientists on the Berkeley Earth team admit surprise that the new analysis has shown such clear
agreement between global land-temperature rise and human-caused greenhouse gases. “I was not expecting
this,” says Richard Muller, “but as a scientist, I feel it is my duty to let the evidence change my mind.”
In relation to co2 and it's influence on climate I present this paper.
There is another compelling argument that can be given to support this hypothesis. Sime, et al. have found that past interglacial climates were much warmer than previously thought. Their analysis of the data shows that the maximum interglacial temperatures over the past 340 kyr were between 6 C and 10 C above present day values. From Fig. 1, it can be seen that past interglacial carbon dioxide concentrations were not higher than that of the current interglacial, and therefore carbon dioxide could not have been responsible for this warming. In fact, the concentration of carbon dioxide that would be needed to produce a 6-10 C rise in temperature above present day values exceeds the maximum (1000 p.p.m.v.)
The latest analysis of ice core records suggests that Antarctic temperatures may have been up to 6°C warmer than the present day.
This suggests Antarctic temperature shows a high level of sensitivity to greenhouse gases at levels similar to those found today.
originally posted by: Phage
a reply to: PeterMcFly
Guess again.
Or you could read the link. It has to with with that emissivity you were talking about earlier.