Posted on 07/19/2004 9:18:10 PM PDT by neverdem
How can you say that?
How can you say that?
==========
The nature of your question is splitting hairs. In the context of a cosmological and astronomical time frame 20 years is not significant. At least when when claimants are declaring global climate changes, IMO. When one wants to discuss nuclear fusion in the evolution of stars and its effects on planets over ten billion years is an entirely different matter. Be assured that the Mt. St. Helens eruption did more to affect an atmospheric change in 6 hours than the nonsensical statement:
"He says that the increased solar brightness over the past 20 years has not been enough to cause the observed climate changes, but believes that the impact of intense sunshine on the ozone layer and cloud cover could be affecting the climate more than the sunlight itself."
Duh. So we can conclude from the article that 'sunlight could affect the climate less because of sunlight in an ozone layer and clouds were the sunlight hits.' It is a poorly written article.
Nope, SPF5000 should do it....
We know the sun has sunspot cycles. 11 years or 22 years depending how you look at it. This is cyclical variability. While the sun is no doubt evolving like any star, there would be no reason to assume it would evolve perfectly smoothly with no burps, but the evolution would have to be smooth within some limits or we wouldn't be here now.
You're right - but now tie your statement into a climatic change like the minions in this article purport.
That would be irresponsible, wouldn't it, lacking supporting data or even data suggesting that.
That is the point.
We all know that. My point is that we shouldn't even be thinking of terraforming other planets such as Zubrin's Mars while we can't do any more than go along for the ride on earth.
"It shows that there is enough happening on
the solar front to merit further research.
Perhaps we are devoting too many resources
to correcting human effects on the climate
without being sure that we are the major
contributor," he said.
Mr. Solanki said that the brighter sun and
higher levels of so-called "greenhouse gases"
both contributed to the change in the Earth's
temperature, but it was impossible to say
which had the greater impact.
Most scientists agree that greenhouse gases
such as carbon dioxide from fossil fuels have
contributed to the warming of the planet in the
past few decades, but have questioned
whether other factors beyond man's control
are also to blame.
To determine the sun's role in global
warming, Mr. Solanki's research team
measured magnetic zones on the sun's surface
known as sunspots, which are believed to
intensify the sun's energy output.
The team studied sunspot data going back
several hundred years. They found that a
dearth of sunspots signaled a cold period —
which could last up to 50 years — but that
over the past century their numbers had
increased as the Earth's climate grew steadily
warmer.
Mr. Solanki does not know what is causing
the sun to burn brighter now or how long this
cycle would last.
He says that the increased solar brightness
over the past 20 years has not been enough to
cause the observed climate changes, but
believes that the impact of intense sunshine on
the ozone layer and cloud cover could be affecting the climate more than
the sunlight itself.
David Viner, the senior research scientist at the University of East
Anglia's climatic research unit, said the research showed that the sun did
have an effect on global warm ing.
He added, however, that the study also showed that over the past 20
years, the number of sunspots had remained roughly constant, while the
Earth's temperature had continued to increase.
This suggested that over the past 20 years, human activities such as the
burning of fossil fuels and deforestation had begun to dominate "the
natural factors involved in climate change," he said.
The Hydrogen Hoax
The New Atlantis.com | February 8, 2007 | by Robert Zubrin
Posted on 02/08/2007 3:58:09 PM EST by aculeus
http://www.freerepublic.com/focus/news/1781558/posts
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