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Originally Posted by Goodnight
Go look at post #34 - it was hotter before ......
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Did I ever say it wasn't? Of course it's been hotter before, multiple times. It's been cooler before, multiple times. We've had higher [CO2], and we've had lower [CO2], both multiple times.
What's your point? Everyone knows this.
Quote:
Originally Posted by Goodnight
Prior temperature changes were over thousands or million of years mainly due to changes in the earths orbit in the Milankovitch cycles , they may not account for all changes but certainly a majority. I don't know of any rate of change that occurred in 100 years, maybe you can produce one.
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I asked you to produce evidence that proves this current rate-of-change (ROC) is unique. If you want to belabor this point that the climate has never changed this quickly before, then the onus is on you to provide a listing of every ROC available for which other scientists can make comparisons. It's quite possible that quicker ROC's have occurred in the earth's past, but you won't know this until you look, and even then, it might be quite impossible to actually gather a complete data set for this.
Quote:
Originally Posted by Goodnight
The increased CO2 levels pretty much mirror the increased temperatures, I don't think anyone can produce a 100% guarantee relative to changes like this when it comes to the earths atmosphere but certainly there is agreement that the scientific data points to man's action. The earth is a closed loop so what other external factors other than fossil fuels could have changed our atmosphere.
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I don't think anyone
should argue that man has a role in increasing [CO2] levels. It's the
level of effect that our influence is causing is still (to this scientist's mind) still wide open for debate.
As for your closed loop statement, this is wrong. Yes, there is more than likely a fixed amount of Carbon (C) on the planet, but that doesn't mean there's a fixed amount of CO2. The compounds that are made of the elements do not have to follow the cycles we all learned in middle school.
And the earth is definitely not closed when it comes to either energy or mass. We pick up tons of mass each year from stellar debris, but we also lose mass by escaping H and He. We also have a net gain each year of radiant energy.
So, it's a closed loop for many things, but not everything.
Quote:
Originally Posted by Goodnight
You still haven't answered the question, do you believe there has been a pause since 1998?
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You didn't ask me that question. I neither believe nor disbelieve it, mainly due to that fact I've not seen the raw data from which to make an educated guess. And since I know how much data can be manipulated, I wouldn't venture to guess how accurate it is. So as for the "pause", I couldn't give a crap.
Quote:
Originally Posted by Goodnight
So if not because of man what do you think caused the temperature increase in such a short period.
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It very well could be man. But I've never seen a definitive study that provide specific data as to how much of the increase is man, and how much is other known (or unknown) factors. And until I do, I'm got going to put up with the "it's man's fault" meme.
It very well could be influences we have yet to ascertain.
As for your question concerning the short period, if your hypothesis is that this is truly too short of a period for temp increases, then you need to provide data from as many other interglacial periods as you can, and show specifically no 100 year periods matching the current ROC. The thing is, I doubt that
enough specific data even exists for which to make those kinds of comparisons. If so, your hypothesis is untestable, and therefore invalid.