2007-02-24 08:37:42 · 5 answers · asked by satyendra s 1 in Environment
From what I understand about present global cooling is that there is dust in the atmosphere that does not allow Sun's heat and light to enter our atmosphere and rather reflects it back causing cooling. Both global warming (because of green house gases) and cooling are taking place simultaneously, but the rate of green house emission is much faster than the rate of cooling at present. This could reverse: if there is lower emission of green house gases compared to particulate pollution or if there is an eventuality of a nuclear explosion. Some hi-technology-warheads are so powerful that one explosion could throw immense amount of dust and particles in the atmosphere that could cut out Sunlight for years leading to a long nuclear winter.
2007-02-24 11:15:03 · answer #1 · answered by DS 2 · 0⤊ 0⤋
I assume your talking about ice ages. There as more of the earth is covered in ice more solar radiation is reflected back into space and the earth cools. Global cooling can be a runaway event occuring very quickly. It is estimated that we could slip into an ice age in less than a decade. It simply snows and doesn't melt within a few years the snow becomes so deep glaciers form in valleys.
Ice ages typically last 100,000 years whereas periods of global warming (times between ice ages) typically last 10,000 years. Its been 10,500 years since the last ice age so we are due.
2007-02-24 08:44:05 · answer #2 · answered by Roadkill 6 · 0⤊ 0⤋
NOOOOOOOOOOOOO. one way the earth does cool is when the solar energy bounces of the large glaciers, which keeps our earth from heating more. However, all of the glaciers are melting beacause of global warming. There is no global cooling except ice ages. We are heating the earth by emitting greenhouse gases. If we did not do this then we would not have a problem with the earth warming because it would be balanced by itself.
2007-02-24 09:00:20 · answer #3 · answered by Anonymous · 2⤊ 0⤋
Climate changes typically take eons. The amount of greenhouse gases being produced by human activity every day is enormous. This has caused a large imbalance which is greatly speeding up the global warming.
2007-02-24 09:47:42 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Global cooling? Did President Bush do that too?
2007-02-24 08:47:01 · answer #5 · answered by Rob D 5 · 0⤊ 1⤋