DA Morgan
"the the real effect of global warming, is the sun itself."
Did you perhaps mean cause rather than effect?...
yes your right. i meant cause.
...if you did please explain why that should have a greater and greater affect that just coincidentally coincides with the industrial revolution and the increased emission of green house gases by the so-called intelligent residents of this planet.
its simple. its not haveing a greater effect, its just that we are in the last phase of the ice age.
when the ice age is over there will not be a polar ice cap, greenland will not have glacers, neither will alaska, and antarica will be farm land 6 months of the year. its happen before.
let me try to explain the way we got to where we are today.
2.1 million years ago. there was no ice age. the permian basin and every thing at that altitude was flooded. then yellowstone erupted for the first time. it spewed several hundred cubic miles (yes miles) of magna into the atmosphere and surrounding land. that magna was so explosive because it was pressurised by co2 and so2. these two gasses react with water differently. co2 does not freeze with water, but will form a type of furtilizer that is washed out of the atmosphere into the soil where plants use it. so2, in the cold of the upper atmosphere, joins with the water to form a type of ice crystal that is very low density, it can stay in the upper atmosphere for decades, although there is a gradual decrease in density as some of it starts falling out. these ice crystals for a cloud cover that is highly reflective and does not absorb heat well.
the yellowstone eruption cause enough sulpheric ice to fill the sky clouds long enough that the tempature of the entire earth fell drastically. in the north, the tempature fell 40 to 60 degrees causing huge fields of ice to form in some cases miles deep. fortuantely the earth was a good bit warmer than it is now, and when the cloud cover thinned enough for the sunlight to once again reach lower altitude, the glacers had reached into colorodo, and some parts of kansas, but not farther. had they reached texas, there would have been so much sunlight reflected that the earth would have continued to get colder.
as i said it stop short of there. so the ice began to retreat as the sun kept heating the earth. so the ice was almost gone. then yellowstone erupted a second time about 1.3 million years ago, fortuantely much smaller. the ice once again headed south and again stopped short of texas. once again the sunlight returned (with the sulpher falling out), and the ice once again retreated.
this was repeated about 64000 years ago then. at that time it kicked out 8000 times as much ash as mount st helens. again, fortuantely this was much smaller and the ice did not extend so far. as with the last two times the ice began to retreat, and, were it not for three smaller super valcanos, the ice might have already been melted already.
74000 years ago, a vei class 7 valcano (yellowstone is 8) erupted in Toba, Indonesia, and almost wiped out the human race, not to mention many other types of animals.
then 10000 years ago (at the same time as the mamoth froze in siberia, interesting connection no?) a much smaller one (vie 6 i beleive) erupted in north america (im not sure where this was, origon i believe). this expanded the ice age, allowing humans to develop in a much cooler area.
then 5000 years ago, the baby of supervalcanos erupted in the mediteranian and extend the ice age a small amount. it also cause a drought that almost wipe out china, and did destroy a south american civilaztion.
as a result, the ice pack is still there and is gradually declining.
some time in the last 2000 years, man began to alter the equation a small amount. he has produced green house gases and has cut down trees in areas that kept water sheds undercontrol, then he did more and more. while these have increased the speed of the loss of the ice shelf, he did not start it, nor has he been the only cause of its increase in speed of its loss.
as more ice is loss, the amount of energy reflected by the snow is deminished and the amount that is absorbed is increased. without man the snow packs decrease in size would be decreasing anyway, but not as fast. man has caused it to disappear faster, but not by that much.
