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Warming and Slowing the World
chrisleonard writes "We all know that global warming is supposed to heat the planet up, but did you know that it might also slow it down? According to a report from Belgium's Royal Observatory (as reported here by astronomy.com), if the days seem a little longer to you than they used to, it might not be just old age catching up with you. Would it be wrong to call the interaction of the world's warming temperatures and its slowing rotation ... a snowball effect?"
1/10000 of a second every century we shall slow down.
This means, that to gain ONE SECOND of our preciously short day, we will have to wait 1 MILLION years. This means, that by the time the
sun explodes, our day will be approximately 83 minutes longer. I'm sorry if I choose not to get excited about this.
In retrospect, the earth's rotation is slowing due to other factors, primarily tidal forces from the moon at a rate of 22 seconds every million years. It will eventually slow to the point where it takes one month to make a complete revolution, in perfect tidal lock with the moon. Or at least it would, although its still unlikely to make it before the sun goes.
Either way, I don't plan to lose any sleep over it. Of all the scares from global warming, this is one of the least disconcerting.
-Restil
Play with my webcams and lights here
That's right. The length of the day increasing by 11us per decade is insignificant compared to the 2 milliseconds per century = 200us per decade increase due to the interaction with the Moon.
Also, cnn had the story 4 days ago.
If you're basing "global warming" off anecdotal evidence, Canberra in Australia (where I live) has just had one of the coolest summers ever. The opposite of your experience. And please, don't try that b-s line on me that "global warming makes the extremes greater", because that's not global warming.
Err... you are aware that putting more water vapour into the atmosphere "makes the extremes greater". If anecdotal evidence is what we're looking for for, then Canberra's recent heavy rainfall should provide evidence of this.
But allow me to present the case against the global warming phenomenon.
1)
Do you have any evidence (peer-reviewed, of course) for this? Forgive my skeptism, but I would put more weight on the views of the Australian Academy of Sciences, Royal Flemish Academy of Belgium for Sciences and the Arts, Brazilian Academy of Sciences, Royal Society of Canada, Caribbean Academy of Sciences, Chinese Academy of Sciences, French Academy of Sciences, German Academy of Natural Scientists Leopoldina, Indian National Science Academy, Indonesian Academy of Sciences, Royal Irish Academy, Accademia Nazionale dei Lincei (Italy), Academy of Sciences Malaysia, Academy Council of the Royal Society of New Zealand, Royal Swedish Academy of Sciences, Turkish Academy of Sciences, and Royal Society (taken from a joint statement made in the journal Science), than the word of a slashdot poster.
2)
This point is just wrong. If you had have paid more attention to the link which you posted, you would find a section on measurements of temperture change in the deep sea Southern Ocean.
3)
This point ignores that loss of ozone will cause a temperture decrease in the upper atmosphere, and that the satellite data has been reexamined, and found to show a increase in the temperture.
4)
Could you please supply a citation for this. I'm interested to see how they seperated out cause and effect. I looked through your supplied link, and didn't see it.
5)
Negative feed back mechanisms have been known about for years, plant growth especially. This have been taken into account in the climatical models.
Warning: Some ideologies on the Net are smaller than they appear.
While yes, most claims over global warming and the like are vastly exaggerated, some of what you say is not strictly correct.
1. Not sure. One thing I do know in the time I have spent doing atmospheric physics is that people are smarter than that. Temperature data is FAR FAR FAR more than a few thermometers in cities
2. There is an experiment called ATOC which has been doing just that for several decades. While this mightnt yet be long enough, the trend seen so far is for warming.
3. This is no longer correct. The satellite data to which you refer has more recently been analysed, and shows a warming effect. I believe the effect that was ignored was the spiralling in of the satellites over time, but im not sure.
4. Eh? millions of years? and you can see a cause and effect? What's more, your next point contradicts this one. CO2 and water are known greenhouse gasses. Even mars is warmed by a few degrees by its atmosphere.
5. Yes, there is a known dampening effect on greenhouse gasses. The other one is the warmer it is, the faster C02 dissolves in the ocean, leaching out as rock.
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