Free Republic
Browse · Search
News/Activism
Topics · Post Article

Skip to comments.

Study acquits sun of climate change, blames humans
REUTERS ^ | 09/14/2006 | Alister Doyle

Posted on 09/14/2006 1:34:00 PM PDT by SirLinksalot

Study acquits sun of climate change, blames humans

By Alister Doyle, Environment Correspondent

OSLO (Reuters) - The sun's energy output has barely varied over the past 1,000 years, raising chances that global warming has human rather than celestial causes, a study showed on Wednesday.

Researchers from Germany, Switzerland and the United States found that the sun's brightness varied by only 0.07 percent over 11-year sunspot cycles, far too little to account for the rise in temperatures since the Industrial Revolution.

"Our results imply that over the past century climate change due to human influences must far outweigh the effects of changes in the sun's brightness," said Tom Wigley of the U.S. National Center for Atmospheric Research.

Most experts say emissions of greenhouse gases, mainly from burning fossil fuels in power plants, factories and cars, are the main cause of a 0.6 Celsius (1.1 F) rise in temperatures over the past century.

A dwindling group of scientists says that the dominant cause of warming is a natural variation in the climate system, or a gradual rise in the sun's energy output.

"The solar contribution to warming over the past 30 years is negligible," the researchers wrote in the journal Nature of evidence about the sun from satellite observations since 1978.

They also found little sign of solar warming or cooling when they checked telescope observations of sunspots against temperature records going back to the 17th century.

They then checked more ancient evidence of rare isotopes and temperatures trapped in sea sediments and Greenland and Antarctic ice and also found no dramatic shifts in solar energy output for at least the past millennium.

SUN NOT GUILTY

"This basically rules out the sun as the cause of global warming," Henk Spruit, a co-author of the report from the Max Planck Institute in Germany, told Reuters.

Many scientists say greenhouse gases might push up world temperatures by perhaps another 3 Celsius by 2100, causing more droughts, floods, disease and rising global sea levels.

Spruit said a "Little Ice Age" around the 17th century, when London's Thames River froze, seemed limited mainly to western Europe and so was not a planet-wide cooling that might have implied a dimmer sun.

And global Ice Ages, like the last one which ended about 10,000 years ago, seem linked to cyclical shifts in the earth's orbit around the sun rather than to changes in solar output.

"Overall, we can find no evidence for solar luminosity variations of sufficient amplitude to drive significant climate variations on centennial, millennial or even million-year timescales," the report said.

Solar activity is now around a low on the 11-year cycle after a 2000 peak, when bright spots called faculae emit more heat and outweigh the heat-plugging effect of dark sunspots. Both faculae and dark sunspots are most common at the peaks.

Still, the report also said there could be other, more subtle solar effects on the climate, such as from cosmic rays or ultraviolet radiation. It said they would be hard to detect.


TOPICS: Culture/Society; News/Current Events
KEYWORDS: globalwarming; humans; sun; sunnotguilty
Navigation: use the links below to view more comments.
first 1-2021-4041-47 next last

1 posted on 09/14/2006 1:34:03 PM PDT by SirLinksalot
[ Post Reply | Private Reply | View Replies]

To: SirLinksalot
Maybe we could get these "researchers" to go the sun to take samples.
2 posted on 09/14/2006 1:35:35 PM PDT by msnimje (What part of-- "DEATH TO AMERICA" --do the Democrats not understand?)
[ Post Reply | Private Reply | To 1 | View Replies]

To: msnimje

Wait, did I read this correctly? Gore is wrong?


3 posted on 09/14/2006 1:37:23 PM PDT by Froufrou
[ Post Reply | Private Reply | To 2 | View Replies]

To: SirLinksalot
The solar contribution to warming over the past 30 years is negligible

Ha ha, so is the warming itself. Noob.

4 posted on 09/14/2006 1:38:48 PM PDT by Gordongekko909 (Mark 5:9)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SirLinksalot

Well, I guess all of Fitzgerald's plans to indict the sun have been ruined.


5 posted on 09/14/2006 1:39:07 PM PDT by The Blitherer (You were given the choice between war & dishonor. You chose dishonor & you will have war. -Churchill)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SirLinksalot
And global Ice Ages, like the last one which ended about 10,000 years ago, seem linked to cyclical shifts in the earth's orbit around the sun rather than to changes in solar output.

OK. So if not the sun's luminosity, then what about the orbit in the past 100 years?

6 posted on 09/14/2006 1:39:31 PM PDT by Incorrigible (If I lead, follow me; If I pause, push me; If I retreat, kill me.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SirLinksalot

Sun hires Gloria Allred and sues for defamation.


7 posted on 09/14/2006 1:40:42 PM PDT by Buck W. (If you push something hard enough, it will fall over.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SirLinksalot
..global Ice Ages, like the last one which ended about 10,000 years ago, seem linked to cyclical shifts in the earth's orbit around the sun rather than to changes in solar output.

But not Global Warming Ages? Hypocrisy and illogical hypocrisy at that!...........

8 posted on 09/14/2006 1:40:52 PM PDT by Red Badger (Is Castro dead yet?........)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SirLinksalot

Why are the polar ice caps on Mars shrinking? Is that our fault too?


9 posted on 09/14/2006 1:41:17 PM PDT by ClearCase_guy (The broken wall, the burning roof and tower. And Agamemnon dead.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SirLinksalot

This has to be some of the 'worst' rebuttal I've ever heard. I quit reading after they said the sun's intensity hadn't varied much over the last 1000 yrs.


10 posted on 09/14/2006 1:41:43 PM PDT by wolfcreek (You can spit in our tacos and you can rape our dogs but, you can't take away our freedom!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: The Blitherer

Fitz'll havta settle for a MOON instead..........


11 posted on 09/14/2006 1:41:52 PM PDT by Red Badger (Is Castro dead yet?........)
[ Post Reply | Private Reply | To 5 | View Replies]

To: SirLinksalot
raising chances
Our results imply
Most experts say
This basically rules out the sun
Many scientists say greenhouse gases might
seem linked to cyclical shifts
there could be other, more subtle solar effects ... they would be hard to detect.

Good, hard, repeatble science all around, I'd say ...

12 posted on 09/14/2006 1:42:09 PM PDT by tx_eggman (The people who work for me wear the dog collars. It's good to be king. - ccmay)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SirLinksalot
A dwindling group of scientists says that the dominant cause of warming is a natural variation in the climate system, or a gradual rise in the sun's energy output.

No bias here! FOAD FOAD FOAD on the surface of the sun, idiots.

13 posted on 09/14/2006 1:42:29 PM PDT by Sir Gawain
[ Post Reply | Private Reply | To 1 | View Replies]

To: SirLinksalot

I suppose the Medieval Warming Period was caused by Vikings, Huns and Mongols burning village?

Junk science.


14 posted on 09/14/2006 1:43:08 PM PDT by Shermy
[ Post Reply | Private Reply | To 1 | View Replies]

To: SirLinksalot
""This basically rules out the sun as the cause of global warming," Henk Spruit, a co-author of the report from the Max Planck Institute in Germany, told Reuters."

NOT QUITE. All it says is that the warming can't be from photons emitted by the sun. Thus far, global warming "theory" has completely ignored the possibility of OTHER solar-induced mechanisms. The suns magnetic field has doubled in strength over its measurement history. This unquestionably affects the energy "coupled" between the sun and the earth. It could also affect the amount of cosmic rays reaching the earth--which is also proven to affect cloud formation (and thus global temperatures).

15 posted on 09/14/2006 1:48:50 PM PDT by Wonder Warthog (The Hog of Steel-NRA)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Red Badger

Naw, he'll just lump the sun and moon together in a civil lawsuit.


16 posted on 09/14/2006 1:48:50 PM PDT by The Blitherer (You were given the choice between war & dishonor. You chose dishonor & you will have war. -Churchill)
[ Post Reply | Private Reply | To 11 | View Replies]

To: Shermy

Just the Vikings. They were Westerners, and therefore solely to blame.


17 posted on 09/14/2006 1:50:37 PM PDT by Gordongekko909 (Mark 5:9)
[ Post Reply | Private Reply | To 14 | View Replies]

To: SirLinksalot
"The solar contribution to warming over the past 30 years is negligible," the researchers wrote in the journal Nature of evidence about the sun from satellite observations since 1978.

In the past 30 years, temperature increases have been neglible. In the past 30 years, solar output variance has been negligible. But, based on 30 years of data, mankind must be responsible for the past 100 years of global temperature increases.

How these guys get from A to C without going through B is ridiculous.

And any nitwit who says that 0.07% variance in solar output is negligible deserves to be drowned in 0.07% of the world's oceans. We'll see what he thinks of 0.07% of a heck of a lot of anything is like after that.

18 posted on 09/14/2006 1:51:33 PM PDT by coconutt2000 (NO MORE PEACE FOR OIL!!! DOWN WITH TYRANTS, TERRORISTS, AND TIMIDCRATS!!!! (3-T's For World Peace))
[ Post Reply | Private Reply | To 1 | View Replies]

To: wolfcreek
Yes, really lame. It has been a difficult task measuring the suns output. It has only been in recent years that we've had satellites that were designed just for that task. In addition there's evidence that Mars has been warming. Hmm, what could possibly be the cause of that...
19 posted on 09/14/2006 1:51:41 PM PDT by DB ()
[ Post Reply | Private Reply | To 10 | View Replies]

To: ClearCase_guy
Why are the polar ice caps on Mars shrinking? Is that our fault too?

Obviously we should have put emission controls on the Mars Rover!

20 posted on 09/14/2006 1:52:16 PM PDT by Tokra (I think I'll retire to Bedlam.)
[ Post Reply | Private Reply | To 9 | View Replies]


Navigation: use the links below to view more comments.
first 1-2021-4041-47 next last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
News/Activism
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson