ANSWERS: 4
  • Temperature shifts have recently been often very large and sudden here, but overall temperature hasn't seemed to increase. Though, I've only been here 10 weeks, so I can't say it's caused by global warming.
  • Climatology is a very difficult and complex science. No we don't totally understand it, but we've only been studying it for a few decades. The question is are we doing permanent damage to our environment? The fact is that we don't know, so we should err on the side of caution.
  • The expected amount of global warming is only a matter of 2-8 degrees over a century. This means that the increase from one year to the next is too small to measure. Furthermore, the natural variation from one year to the next is much greater than the increase from one year to the next. However, things like the shrinking of both ice caps and the retreat of glaciers across the world make it pretty clear that warming is occurring. The ten hottest years on record have occurred in the last twenty, but you would not expect every year to be hotter than the one before.
  • The increase is averaged out through out the entire world.So in some areas the earth's temperature could be 10+ decrees colder and other parts of the world 10+ degrees warmer.In the polar regions the warming is mostly felt,and the arctic ice mass that has existed for billions of years could entirely melt by the year 2050,or earlier.Without the ice and snow to reflect the sun's rays the earth will heat up faster and even scientists cannot accurately predict the outcome of the arctic ice cap melting completely.

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