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Author Topic:   Global Cooling?
BMG
Member (Idle past 230 days)
Posts: 357
From: Southwestern U.S.
Joined: 03-16-2006


Message 1 of 79 (454750)
02-08-2008 3:40 PM


Someone posted this article I have below as support that the global warming phenomenon is a "hoax", and that the Earth is likely going to cool.
http://ibdeditorial.com/IBDArticles.aspx?id=287279412587175
I have yet to refute this argument. I am researching now the sources that are used in the article, and the effects of the solar cycle on the Earth's climate, but I could use the help of the EVC team. Here are some quotes from the article itself:
"[Kenneth] Tapping reports no change in the sun's magnetic field so far this cycle and warns that if the sun remains quiet for another year or two, it may indicate a repeat of that period of drastic cooling of the Earth, bringing massive snowfall and severe weather to the Northern Hemisphere".
And one more, from the Hoover Institution, "The effects of solar activity and volcanoes are impossible to miss. Temperatures fluctuated exactly as expected, and the pattern was so clear that, statistically, the odds of the correlation existing by chance were one in 100," according to Hoover fellow Bruce Berkowitz. "
One more, from the Hoover Institution, "The study says that 'try as we might, we simply could not find any relationship between industrial activity, energy consumption and changes in global temperatures'".

Replies to this message:
 Message 6 by RAZD, posted 02-09-2008 5:09 PM BMG has replied
 Message 10 by AnswersInGenitals, posted 02-10-2008 12:25 PM BMG has not replied

  
BMG
Member (Idle past 230 days)
Posts: 357
From: Southwestern U.S.
Joined: 03-16-2006


Message 7 of 79 (455055)
02-10-2008 12:02 AM
Reply to: Message 6 by RAZD
02-09-2008 5:09 PM


I understand that sunspots are essentially "loops of tangled magnetic field" rising through the surface, and that these areas burn slightly cooler than the rest of the Sun's photosphere - roughly 1500k cooler - but I am at a loss regarding the connection between sunspot activity and the Sun's intensity.
Where is the affiliation?
I like the low tide analogy, and I enjoyed your post. Thank you for your time.
Lastly, my source concerning the sunspots was "Horizons: Exploring the Universe", by Michael A. Seeds.
I have to learn how to use footnotes.
P.S. There is a great documentary on the History Channel called "The Little Ice Age", referring to the Maunder Minimum, between 1610 and 1745, I believe.

This message is a reply to:
 Message 6 by RAZD, posted 02-09-2008 5:09 PM RAZD has replied

Replies to this message:
 Message 9 by RAZD, posted 02-10-2008 8:46 AM BMG has not replied
 Message 14 by fgarb, posted 02-10-2008 5:50 PM BMG has not replied

  
BMG
Member (Idle past 230 days)
Posts: 357
From: Southwestern U.S.
Joined: 03-16-2006


Message 12 of 79 (455109)
02-10-2008 1:26 PM
Reply to: Message 11 by RAZD
02-10-2008 1:09 PM


Re: The real question.
Another issue is that the weather in the Northern Hemisphere is kept artificially warm by the Gulf Stream, and that significant change or disruption of this system would cause colder weather -- without any regard to global temperature levels.
Yes, the Thermohaline Circulation, if disrupted, will cause a severe temperature fluctuation of Western Europe. The Greenland Icesheet, especially, if it continues to melt, will dump millions of cubic liters into the Atlantic, severely disrupting the circulation of heat from the Equator to the N. Hemishere.
Europe's Mediterranean climate will be no more. Crops will wither, tourism will slow, and Europe, in general, will be hurting.
Thermohaline circulation - Wikipedia

This message is a reply to:
 Message 11 by RAZD, posted 02-10-2008 1:09 PM RAZD has not replied

  
BMG
Member (Idle past 230 days)
Posts: 357
From: Southwestern U.S.
Joined: 03-16-2006


Message 75 of 79 (456251)
02-16-2008 3:32 PM
Reply to: Message 55 by tesla
02-14-2008 2:03 PM


Re: Global dimming?
what is the true reason Venus has this atmosphere? is it because of vicinity to the sun, or because of radiation forces with a concentration of CO2? at what levels of CO2 concentration, and the highest known spike of radiation concentrations, and the overlapping bounce of radiation in the atmosphere with the carbons constitute a full covering?
Venus has a runaway greenhouse effect. The reasons are several. First, is its closeness to the sun. Objects near the sun are far hotter than those further from it.
Second, which is relative to the first reason, is that Venus doesn't have oceans of water that the Earth has. Venus never had oceans of water. There is a small amount of evidence that shows Venus had maybe 6 feet deep ponds and other small bodies of water, but nothing compared to the oceans we experience here on Earth. The water that was on Venus evaporated very quickly due to Venus' location near the sun.
Remember, these oceans act as carbon sinks which absorb the CO2 from the atmoshphere and store it in carbonaceous rocks, such as limestone, at the bottom of the ocean. Without oceans, the CO2 accumulated very quickly and in great amounts.
Third, is Venus' mass. Mercury, you will notice, is even closer to the sun than Venus is, but it doesn't have a runaway greenhouse effect. Venus has enough mass to hang on to its atmosphere, where as Mercury is not massive enough, and its escape velocity is much lower, allowing the atmosphere to escape into space.

This message is a reply to:
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