Jun

24

 A hundred years ago Milutin Milankovich, a Serbian scientist/engineer, didn't have much to do as he was a POW held by the Austrians. So he calculated the pre-historical temperatures of the Earth, based entirely on planetary distances to the sun. Several other scientists persuaded him to go back quite far in time and eventually he calculated the temperatures back a million years. Of course at that time there was no way to prove his work, until in the 1970s data from Antarctic ice cores became available. It turns out his calculations were very accurate, as were similar calculations for Mars and Venus.

If someone a century ago could calculate Earth's temperature a million years ago, the global warming claims of one camp seem to lack significant credibility.

Stefan Jovanovich writes: 

Milankovic's theory is this: "variations in eccentricity, axial tilt, and precession of the Earth's orbit determine climatic patterns on Earth"

The theory of the warmist researchers is that "the addition of combustion gases - most importantly, CO2 - from man-made uses of energy to the earth's atmosphere determine climatic patterns on Earth".

The reason for the falsifications of data by warmist researchers– I assume here that no one denies that these have occurred– is that the theory of man-made global warming requires a dramatic increase both in temperature and CO2 levels during the period when people have been burning stuff. If that cannot be found, then the theory has to contend with the very data that Al Gore found so persuasive– the Vostok ice core samples– and explain why CO2 level increases seem to be a result rather than a cause of the rise in the earth's surface temperature. That non-modeled data (i.e. the ice cores were actually dug out of the earth, not created in a computer model) is inconvenient and true. The Vostok data shows that changes in temperature always precede the changes in atmospheric CO2 by about 500-1500 years.

The usual rebuttal to this evidence and the fact that its data is entirely consistent with the Milankovic theory is something like this: "yes, it's true there is a delayed correlation; but that ignores the more important fact. Once the rise in CO2 levels start, they take over as the most important climate force."

But here, too, the actual non-modeled data presents a problem; the declines in earth surface temperatures that begin the "ice ages" occur precisely when CO2 levels are at their highest. If the Hansen theory's forces are so strong and can overwhelm the mere changes in the Earth's orbit, then how can the 'weak' signal can start an Ice Age when the strong Hansen signal says the opposite should be occurring?

The answer to that, of course, is the usual ad hominems that are the ever available rhetoric of the progressive mind: (1) you don't understand, (2) you haven't read our secret data and (3) you are too stupid to understand these things.

I think we have another definitional problem here, HA. "Complete(ly) unbiased description(s) of meteorology-climatology science practices" do not get written by people who write: "as a historical science, the study of climate change will always involve revisiting old data, correcting, modeling, and revising our picture of the climatic past. This does not mean we don't know anything. (We do.) And it also does not mean that climate data or climate models might turn out to be wildly wrong. (They won't.)"


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