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Originally posted by Fromabove
With Global temperatures going down, and solar radiance going down, and sunspot activity the lowest since 1913, is the planet cooling down ? Are we in for another Maunder minimum or maybe even an ice age? Or on the other hand, with excessive greenhouse gasses being pumped into the air, are we still warming the planet up? Are we looking at an overheated planet ahead? This inquiring mind wants the right answer to the question. All evidence for either is welcomed.
The graph shows the long-term trend in surface temperatures since 1880. The annual average temperatures are shown in light orange, and the jaggedness of the line indicates how much the average global surface temperature varies from year to year. Because climate is so variable form year to year, it can be easier to spot long-term trends through multi-year averages. The dark red line shows the five-year running average, which is an average of five years of annual temperatures centered on a given year. Even this five-year average shows that climate has ups and downs, but the long-term increase in global average surface temperatures is obvious. The gray “barbells” indicate the range of uncertainty. Not surprisingly, the uncertainty is larger for older measurements than for more recent ones.
Wehner, who works at the Lawrence Berkeley National Laboratory in Berkeley, Calif., says that the long-term trend really is toward a warmer planet, but that a single year, 1998, has temporarily thrown off the overall upward march in temperature.
El Nino and other weather factors can cause a short reversal in the warming trend for a year. A 10-year reversal is less likely, but still possible. Just as in throwing a coin, seven heads in a row is unexpected, but it does happen now and then.
Originally posted by loner007
The term Global warming is a misnomer. The misunderstanding is that when we talk of global warming we are talking about the average global temperature from across the globe. Some places will get hot other places will get colder as the extra heat one area will have is taken from another area which will make that area cooler.
Global cooling is the very possible result of global warming (ironic isnt it?) as the ice caps melt increasing the surface area of water. That in turn will act like a sponge soaking up the carbon dioxide. Also this large amount of fresh water it will lessen the saltiness of the seawater and therefore the gulf stream which conveys warm water from the equator up to the northern hemishpere will start to work less and less and may altogether stop. If that happens ICE AGE TIME
[edit on 7-7-2009 by loner007]
Originally posted by Camilo1
Want to see all seasons in one day?, come to the andes, and you will get a chance to feel winter, spring, summer and fall in one day.
Originally posted by ~Lucidity
Here's one take on it...
www.livescience.com..." target="_blank" class="postlink" rel="nofollow">How Global Warming Can Chill the Planet
and here's another...
Global WarmingL A Chilling Perspective
Am I wrong in thinking (along with many others) that global warming was perhaps a poor choice of term to describe what is happening? I think it's distracted many people from seeing that something unusual is happening...be in human-caused, human-contributed, or totally natural. In any case, we have to figure it out and deal with it, whether that means changing our habits or just our habitats.