Can anyone identify a ten year period when in history when global temperatures did not change???

Question

If the global temperature trend has never been a flat line in recorded history, wouldn't it be a rational conclusion that global climate change is the normal condition of our planet ?

And if that were true, why then are so many trying to scare people over conditions being normal for our planet??

Answer 1

The data shows that we've been a relatively stable period for the past 10,000 years unitl we messed it up.

http://www.globalwarmingart.com/wiki/Ima...

The fact that temperature changed previously for natural reasons does NOT prove this change is natural.  As the graph shows, it's unusually rapid.

Additionally increased CO2 HAS to cause warming, it's basic physics.

For these and many other reasons 99+% of scientists say THIS warming is not natural.

EVERY major scientific organization says that:

The National Academy of Sciences, the American Association for the Advancement of Science, the American Institute of Physics, the American Chemical Society, the American Geophysical Union, the American Meteorological Association, etc.

Bottom line:

"We humans have built a remarkable socioeconomic system during perhaps the only time when it could be built, when climate was sufficiently stable to allow us to develop the agricultural infrastructure required to maintain an advanced society.  If the Earth came with an operating manual, the chapter on climate might begin with a caveat that the system has been adjusted at the factory for optimum comfort, so don't touch the dials."

Answer 2

you are absolutely right, however, the temp has been static for the last ten years. UP until approx 8,000 yrs ago the climate was all over the place, it has been stableish for the last 8,000 yrs

Answer 3

In your mind, did past natural changes not have a reason?  

Would we be unable to change the climate using the exact same mechanisms?

Your logic is flawed.  The existance of past natural changes is not evidence that we're not changing climate now.  In fact, our understanding of past changes confirms our theories of how and why the climate is warming globally now, due to greenhouse gases and black carbon pollution.

http://earthobservatory.nasa.gov/Study/G...

Q. If Earth has warmed and cooled throughout history, what makes scientists think that humans are causing global warming now?



A.  The main reason that scientists think humans caused warming since 1950 is that none of the natural processes that influence Earth’s climate have changed enough during that time period to explain the warming.

Over the past thousand years, temperatures have been preserved in natural records like tree rings, ice cores, and coral reefs. Many independent estimates of temperatures from these sources show that while global average surface temperatures varied, at no time were they warmer or did they climb more quickly than during the latter half of the 20th century. Three things can alter global temperatures over this short period: changes in the Sun’s activity, volcanic eruptions, and human emissions of greenhouse gases and aerosols.

During the twentieth century, the average amount of energy coming from the Sun either remained constant or increased slightly. (See “Has the Sun been more active in recent years?” for more on that topic.) Major volcanic eruptions temporarily cooled temperatures by pumping reflective gases into the atmosphere. At the same time, the burning of fossil fuels pushed greenhouse gas levels higher than they have been for at least the past 700,000 years. Laboratory experiments have shown that carbon dioxide, methane, and other greenhouse gases absorb and re-radiate infrared energy, or heat, and satellite observations have shown that these gases have the same heat-trapping effect in the atmosphere. The dramatic rate of increase in greenhouse gases during the latter half of the 20th century matches the rate of temperature increase.



Even more telling is the way in which temperatures are rising. If the warming were caused by a more active Sun, then scientists would expect to see warmer temperatures in all layers of the atmosphere. Instead they have observed a warming at the surface and in the lower parts of the atmosphere and a cooling in the upper atmosphere. Something is trapping heat in the lower atmosphere, and that something is greenhouse gases.

Finally, scientists are almost certain that warming during the last 50 years was caused by human activity because models can’t reproduce the observed temperature trend without including a rise in greenhouse gases.

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Cindy W. -  

Do you ever contribute anything here other than offensive generalizations about others?  Ever (evidence please)?  Funny that you complain as if that's what others do!

Please contribute facts, not insults.

Answer 4

Because of our God-given large brains, humans have been able to adapt to the harshest of conditions. We do not for instance have fur on our body. Does this mean we were designed for a warmer climate? I believe the historical record consistently shows that warming periods have been good for mankind, and most other life forms. The earth's climate, it appears will always be in a constant state of change. It is a complete waste of time and resources to devote so much time and energy into something, that even if true, which I highly doubt, will be beneficial to life on this wonderful planet.

Answer 5

Maybe you should "school" the scientists (sarcasm). I guess sucking black goo out of the earth, "refining" it, and burning it in a manufactured hunk of metal and plastic (more petroleum) is natural? Spin it however you want, but you can't get past the fact that we can affect the environment.

http://dels.nas.edu/dels/rpt_briefs/clim...

Answer 6

Well that's the problem with renaming something away from it's scientific name, now isn't it?  This was the "Greenhouse Effect" for near 100 years.  Then the hippies in the 1970's thought it would be better if it was renamed to Global Warming because then it could be understood by people without requiring them to know anything.  Then the neocons under Bush decided they could play that name too, and that if they renamed it to "Climate Change" nobody would know what it meant.  It would then be arguable for instance, that rising temnperatures due to the Greenhouse Effect caused by human CO2 production were "normal", since they fell within this all inclusive definition.