Posted:
#51
From c-gold: Remember, I am a dumbass
On this subject, absolutely, but that is well established already.
Never said I read thousands of repoets, only about a dozen. I have read articles that examine the consensus view among pertinent scientists, and there is an overwhelming agreement among those scientists that greenhouse gases fromhuman activity is causins an acceleration in the rate of global temperature rise, and that as these human generated gases continue to be releaded, at an accelerating rate, the rate of warming will also increase.
Now listen, carefully, I know it is hard for you to concentrate, but try. The whole point is that human activity is ACCELERATING the rate of temperature increase above the NATURAL short term warming that began about 150 years ago. cycles. The problem is, that if our activities cause too much variation in the natural cycle, we COULD have significant and profiund changes to weather patterns. (note that few degree atmospheric temp increase that may occur will likely cause changes in ocean temps, ocean salinity, which could cause the massive change in weather patterns).
Regarding "how Canada melted", that was part of the warming trend the earth has been in for the last 20,000 years or so, since the last glaciation (a relatively short term cooling trend, as opposed to longer term cooling trends lasting tens of millions of years, as opposed to short term temp cycles between glaciations, like we have been in the last several thousand years). Actually, we are in a period of relatively warm temps, it is usually cooler on the earth, we can expect anouther glaciation if history is a guide, but not for thousands of years.
Various theories exist to explain this. In general. it is thought that dust from variable volcanic activity and/or meteorites cause cooling to the point that the earth enters an ice age. When this activity recedes, and dust is reduced, the planet warms again and glaciers retreat. Note that this is over tens of thousands (glaciations) and millions of years (ice ages). There is also work that shows the glaciations may be tied into the precession of the earths axis and variations of the earths orbit.
Oh, generally speaking, trees are good. Unless you listen to the renowned scientist Ronald reagan who thought that trees cause pollution.
Sorry, i'm sure you did not understand this explanation, it probably cannot be stated simplistically enough for you to understand.
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