Chatroom
 

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Bad Astronomy and Universe Today Forum > Science and Space > Science and Technology
Register FAQ Members List Calendar Mark Forums Read

   

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #271 (permalink)  
Old 15-March-2006, 10:56 PM
publiusr publiusr is offline
Order of Kilopi
 
Join Date: Feb 2005
Posts: 5,327
Default

And not in just the field of meteorology:
http://www.livescience.com/history/0...er_island.html

"Lipo thinks the story of Easter Island's civilization being responsible for its own demise might better reflect the psychological baggage of our own society than the archeological evidence. "

"It fits our 20th century view of us as ecological monsters," Lipo said. "There's no doubt that we do terrible things ecologically, but we're passing that on to the past, which may not have actually been the case. To stick our plight onto them is unfair."
Reply With Quote
  #272 (permalink)  
Old 17-March-2006, 07:02 AM
Manchurian Taikonaut's Avatar
Manchurian Taikonaut Manchurian Taikonaut is offline
Established Member
 
Join Date: Mar 2004
Location: Sol's pale blue dot
Posts: 1,645
Default

Quote:
Originally Posted by Demigrog
The problem with making fossil fuels more expensive is that the alternatives are not cheap, just cheaper. Energy production would still chew up a larger percentage of our resources, impacting the economy.

Further, it is a fallacy to assume that cost is the only reason renewable energy is not viable-- there are capacity limitations on both solar and wind power, not to mention significant environmental impacts from 350 foot tall turbines and square miles of solar panels. Besides, we are already developing wind power at an astonishing pace. There has not been a single major new coal or gas turbine power plant order in the US since the energy bubble burst (~2001), yet there are thousands of new wind turbines being built.

Nuclear power could solve all of our energy problems; it is already cost competitive with fossil fuels and produces no pollution at all. It is frustrating beyond belief that we even have to debate CO2 reduction, when we already have the technology to make it a non-issue.

Solar power isn’t ready for prime time yet, but will be within a few years. Residential solar units are going to be a lot cheaper soon. I don’t expect to ever see widespread industrial scale solar, however, unless there is some breakthrough in PV efficiency.


Of course that would be bad; given time, we will replace oil with alternatives in an orderly fashion. If we had to do it all at once, it would disrupt society like nothing since WW2.


Really, there isn’t anything wrong with our current energy policy. The fast track plan to jump start nuclear plant construction should be expanded, but that’s about the only thing I’d change.
I think many are looking at alternative energy now such as wind and nuke power, the stubbornly high oil prices have renewed worldwide interest in sustainable energy sources, such as solar, wind and biomass as well as biofuels and France is looking at a fusion plant.


Warming seas cause stronger hurricanes

Mega-storms are set to increase as the climate hots up.

http://www.nature.com/news/2006/0603...060313-12.html

Warmer ocean waters are indeed a key factor in creating more devastating hurricanes, atmospheric scientists have found. The finding confirms what many have suspected: that rising temperatures are directly linked to the upswing in hurricane intensity seen in the past few decades.
Reply With Quote
  #273 (permalink)  
Old 17-March-2006, 08:29 PM
Demigrog's Avatar
Demigrog Demigrog is offline
Established Member
 
Join Date: Dec 2003
Location: Virginia
Posts: 1,212
Default

Quote:
Originally Posted by Manchurian Taikonaut
I think many are looking at alternative energy now such as wind and nuke power, the stubbornly high oil prices have renewed worldwide interest in sustainable energy sources, such as solar, wind and biomass as well as biofuels and France is looking at a fusion plant.
Actually, it is the rising cost of natural gas that is really driving the push for alternative energy at the moment. In the US, we have built almost nothing but gas turbines in the recent past, and their fuel costs are through the roof. Wind energy is something of a quick fix for that, as government incentives reduce the up-front capital costs as well as add a 1.8 cent/kW incentive. Plus, compared to a coal or nuclear plant, a wind farm can be developed quickly.

Recently, there has been a push for new IGCC coal plants; this is the next boom market for power generation in the US, especially if Gen III+ nuclear hits regulatory snags and natural gas prices stay high. IGCC is nice because it eliminates pretty much all emmissions except CO2--plus is 20% more efficient than pulverized coal, so CO2 is 20% reduced for the same output. Longer term, CO2 capture and storage could eliminate CO2 emissions as well (though the sites I am familiar with definately are not planning to do it any time soon).

You can kindof breakdown power generation technology in the US by how far out you need it (my personal estimates):
Immediately: Natural Gas, Wind, trace amounts of Solar PV and Biomass
By 2015: IGCC Coal
By 2020: Gen III+ Nuclear, Carbon Captured IGCC Coal
By 2040: Gen IV Nuclear
By 2050: First commercial Fusion

Other countries have better opportunities for Hydro (China in particular) taking some of the immediate and near-term load. Gen III nuclear is also a much bigger deal in Asia. France obviously leads the way on nuclear power, and thus doesn't have much need for anything else.



Quote:
Originally Posted by Manchurian Taikonaut
Warming seas cause stronger hurricanes

Mega-storms are set to increase as the climate hots up.

http://www.nature.com/news/2006/0603...060313-12.html

Warmer ocean waters are indeed a key factor in creating more devastating hurricanes, atmospheric scientists have found. The finding confirms what many have suspected: that rising temperatures are directly linked to the upswing in hurricane intensity seen in the past few decades.
Why this is news I am not quite sure; Hurricanes get their energy from heat in the water, so it is rather obvious that warmer water means stronger storms in general. What is less obvious is whether the warmer water is due to greenhouse gas emissions, or even a global warming trend at all.
__________________
Do try not to take me too seriously.
Reply With Quote
  #274 (permalink)  
Old 21-March-2006, 03:03 PM
Argos's Avatar
Argos Argos is offline
Order of Kilopi
 
Join Date: Oct 2001
Location: 22°20'42"S / 49°03'14"W
Posts: 8,284
Default

An apocalyptic take.

Quote:
(...) that our understanding of the way the climate system works is very far from complete. If you put them together, the indisputable conclusion that you can draw is that all the climate modeling we've produced so far is deeply conservative. Things are worse than climate models are suggesting.
__________________
What brings us together is stronger than what pulls us apart
Reply With Quote
  #275 (permalink)  
Old 13-April-2006, 05:15 AM
AKONI AKONI is offline
Established Member
 
Join Date: Apr 2002
Posts: 288
Default Global-warming alarmists intimidate dissenting scientists into silence

Climate of Fear

I figured there might be some interesting feedback on this...

http://www.opinionjournal.com/extra/?id=110008220
Reply With Quote
  #276 (permalink)  
Old 13-April-2006, 01:55 PM
antoniseb's Avatar
antoniseb antoniseb is online now
Administrator
 
Join Date: Jul 2005
Location: Berlin MA
Posts: 16,264
Default

This article is all politics and no science. If someone will identify the approprite thread, I will merge this with an existing thread on the politics of global warming, or perhaps it belongs in a conspiracy thread. I'm open to suggestions.
__________________
Forming opinions as we speak
Reply With Quote
  #277 (permalink)  
Old 13-April-2006, 02:58 PM
ToSeek's Avatar
ToSeek ToSeek is offline
Vulcan Administrator
 
Join Date: Oct 2001
Location: Greenbelt, MD
Posts: 26,438
Default

Last two posts merged in from a thread originally posted in BABBling.
__________________
Everything I need to know I learned through Googling.
Reply With Quote
  #278 (permalink)  
Old 12-June-2006, 04:29 PM
Manchurian Taikonaut's Avatar
Manchurian Taikonaut Manchurian Taikonaut is offline
Established Member
 
Join Date: Mar 2004
Location: Sol's pale blue dot
Posts: 1,645
Default

Quote:
Originally Posted by Ken G
You make the point that we will need to alter our energy policies to adapt to new technology and dwindling resources. I agree with you there. My question is, what energy policy? The AGW debate really goes much deeper, it is a debate about whether the world, as a whole, should seek a cogent mutually-agreed upon energy usage policy, that takes into account issues like environmental impact (along with what would be fair versus what is greedy, self-serving, and oppressive to future generations of humanity). That's all the AGW folks are really saying, that if we know CO2 levels are rising, we should view that as a climatic pollutant because it is a Greenhouse gas, and we ought to factor that into our global energy policy. Anti-AGW folks are saying that ought not to be factored in because it is a red herring. All right, maybe it's true and maybe it isn't, but which camp are actually the ones working for a sane, fair, renewable, and mutually beneficial world energy policy, and which camp is simply making it easier for the rich to get richer? I accept that your arguments are scientific Glom, and are as solid as any on the other side that I've heard, not being an expert. But I think you are being naive about the geopolitical factors at play here.
No-- I retract that last bit, with apologies. For all I know, you could be Karl Rove. Maybe you are!
I don't know about all the poltical stuff in American society but we should keep politics out of this debate, except for the politics that impacts or muzzles science


Here is more on NASA's censorship


NASA admits Deutsch muzzled scientist
Sunday, June 11, 2006 at 9:36 pm
http://www.badastronomy.com/bablog/2...led-scientist/
NASA has publicly admitted that White House appointee George Deutsch inappropriately denied press interviews with global warming scientist James Hansen. NASA internally reviewed what happened with Deutsch. A letter from Brian Chase, Assistant Administrator for the Office of Legal Affairs at NASA sent a letter to Senators Joe Lieberman (D-CT) and Susan Collins (R-ME) briefly outlining the finding
Reply With Quote
  #279 (permalink)  
Old 13-June-2006, 05:30 PM
Kesh's Avatar
Kesh Kesh is offline
Established Member
 
Join Date: Mar 2004
Location: Kentucky, USA
Posts: 1,134
Send a message via ICQ to Kesh Send a message via Yahoo to Kesh
Default

We've discussed Deutsch before. It wasn't NASA doing the censoring, but the administration. And that's as close to politics as I'm willing to get. The subject's way too close already.
__________________
"Reality is that which, when you stop believing in it, doesn't go away."
Philip K. Dick, Do Androids Dream of Electric Sheep?
"A lie can travel half way around the world while the truth is putting on its shoes."
Mark Twain

Avatar courtesy of Bunny.
Reply With Quote
  #280 (permalink)  
Old 15-June-2006, 02:50 AM
Natural-Philosopher Natural-Philosopher is offline
Banned
 
Join Date: May 2006
Posts: 177
Default

Quote:
Originally Posted by pghnative
Thanks! Lot's of info I didn't know. So if ~ 20 ppb is not causing obvious harm to rural Canadians, that begs the question of why some people were up in arms about keeping the US limit at 10 ppb (vs lowering to 5 ppb).
The outgoing Clintonian EPA has reduced the allowable levels in drinking water below the ambient background in most of the Southwest. My firm is selling equipment to remove Arsenic to meet this new lower level limit to many municipalities. It is a total waste of money, and everyone including me who is profiting from it know that.

Since the bodies are lying all over in the gutter from Las Vegas to San Antonio from the millions of people poisoned by Arsenic in the water, its taking longer to clean the water of this hazardous substance. (sarcasm)

But as a typical bureaucracy if there is no problem to justify your continued existence, create one, and then ask for a budget increase.
Reply With Quote
  #281 (permalink)  
Old 15-June-2006, 05:37 AM
Natural-Philosopher Natural-Philosopher is offline
Banned
 
Join Date: May 2006
Posts: 177
Default

Quote:
Originally Posted by Evan
Never mind the greenhouse gases. They are talking about soot. Before they built the very clean cogeneration power plant here the sawmills used to burn all their wood waste in beehive burners. It would turn a fresh snowfall dark grey with the ash fallout from the burners in 24 hours. I can tell you from experience it most certainly absorbs heat far better than clean snow. It will melt the snow in a hurry.
Evan,

You have demonstrated the problem. Now do something about it. Join the Society for the Prevention of Albedo Reduction. We say that you alter the planet when you create conditions for absorbing more of the Solar flux.

Covering the world with soot would alters how much is re radiated; absorbing the Solar flux and piping it off at a different frequency would do it too. A solar collector either of IR energy or a PV collector absorb the flux and do not radiate as much back to Space. What doesn't get tossed back into Space must be left around to alter (i.e Warm) the planet.

Conclusion:
Beware the use of uncontrolled and unregulated absorption Solar Energy!

Similarly if you disturb Nature's attempt to achieve thermal equilibrium by interrupting or slowing the movement of gases which are seeking to bring temperatures into equilibrium you are altering the Albedo as well.

Conclusion:
Beware the use of uncontrolled and unregulated use of Wind Energy!
Reply With Quote
  #282 (permalink)  
Old 15-June-2006, 06:15 AM
Superluminal's Avatar
Superluminal Superluminal is offline
Established Member
 
Join Date: Aug 2003
Posts: 1,424
Default

Here's a little of what was in the Canadian Free Press.

http://www.canadafreepress.com/2006/harris061206.htm
__________________
I'm not a scientist, but I play one on the internet.
http://www.rrac.org
Reply With Quote
  #283 (permalink)  
Old 15-July-2006, 06:53 AM
BobK BobK is offline
Junior Member
 
Join Date: Jun 2004
Location: Uncasville, Ct.
Posts: 35
Default

Just out. An analysis of Mann's hockeystick work. Done by 3 eminent statisticians unconnected to either Mann or M&M, and done for no remuneration.

A 90k .pdf Fact sheet
Comment #2 here is Mann's response

1.5 meg .pdf Entire report
Much more verbose and includes a social network analysis of the paleoclimate research community. Demonstrates why many other studies should not be considered independent.

What was striking to me is the clarity of their presentation. I found it to be short on weasel wording. Not math heavy.
__________________
A mind is like a parachute. It works better when it's open.
Reply With Quote
  #284 (permalink)  
Old 17-July-2006, 09:59 PM
vorblesnak vorblesnak is offline
Established Member
 
Join Date: Oct 2004
Location: Toledo, OR
Posts: 182
Default

Within the topic but not necessarily the group, who watched the Discovery Channel 2 hour program on global warming.

I didn't sleep in a motel last night, but I did watch Discovery Channel. Am I a climate scientist now?

David Davis
Toledo, OR 97391
Reply With Quote
  #285 (permalink)  
Old 17-July-2006, 10:48 PM
dgruss23's Avatar
dgruss23 dgruss23 is offline
Order of Kilopi
 
Join Date: Dec 2002
Location: Upstate New York
Posts: 4,290
Default

Quote:
Originally Posted by BobK
Just out. An analysis of Mann's hockeystick work. Done by 3 eminent statisticians unconnected to either Mann or M&M, and done for no remuneration.

A 90k .pdf Fact sheet
Comment #2 here is Mann's response

1.5 meg .pdf Entire report
Much more verbose and includes a social network analysis of the paleoclimate research community. Demonstrates why many other studies should not be considered independent.

What was striking to me is the clarity of their presentation. I found it to be short on weasel wording. Not math heavy.
Thanks Bobk - very important information.
__________________
"The scientist who asks the right question reconnoiters a new patch of the unknown, and may, with luck, bring it within the constricted but expanding boundaries of the known."

~Timothy Ferris (The Red Limit) 1982
Reply With Quote
  #286 (permalink)  
Old 18-July-2006, 09:48 PM
BobK BobK is offline
Junior Member
 
Join Date: Jun 2004
Location: Uncasville, Ct.
Posts: 35
Default

Quote:
Originally Posted by vorblesnak
Within the topic but not necessarily the group, who watched the Discovery Channel 2 hour program on global warming.

I didn't sleep in a motel last night, but I did watch Discovery Channel. Am I a climate scientist now?

David Davis
Toledo, OR 97391
I only saw about half of the scare show, but that was enough. The plethora of weasel wording(if, may, might, could, etc.) was astounding. That, along with the paucity of opposing views(none while I watched), made it a waste of time.
__________________
A mind is like a parachute. It works better when it's open.
Reply With Quote
  #287 (permalink)  
Old 06-September-2006, 06:24 PM
Launch window's Avatar
Launch window Launch window is offline
Established Member
 
Join Date: Jul 2004
Posts: 2,013
Default

some more news

California hasn't gone out on a limb as the first state to adopt strict limits on the release of carbon dioxide to help combat global warming. Ever the trend-setter, the Golden State is merely getting a leg up on the rest of us.
What we'll all have to do before very long is get serious about addressing the greenhouse gases that threaten to change radically Earth's climate.
http://www.pennlive.com/editorials/p...970.xml&coll=1
Gov. Arnold Schwarzenegger, going against fellow Republicans in the state Legislature, joined majority Democrats in casting legislation that will require that by 2020 California reduce its CO2 emissions to their 1990 levels, a cut of 25 percent.

The British Association for the Advancement of Science says the world must focus on preparing for the "hotter, drier world" that global warming will bring. Association President Frances Cairncross said politicians and environmentalists put too much emphasis on trying to prevent climate change and not enough on adapting the world to the warmer temperatures it will bring, The Times of London reported Monday.
http://www.terradaily.com/reports/To...hange_999.html
"Adaptation policies have had far less attention than mitigation, and that is a mistake," she said.

California Gov. Arnold Schwarzenegger said his state will become a world leader in reducing greenhouse gas emissions because of an agreement his Republican administration negotiated with the Democratic controlled state Legislature.
http://www.wastenews.com/headlines2.html?id=1157123927
"[Assembly Bill] 32 strengthens our economy, cleans our environment and once again establishes California as the leader in environmental protection," Schwarzenegger....
Reply With Quote
  #288 (permalink)  
Old 06-September-2006, 06:48 PM
Argos's Avatar
Argos Argos is offline
Order of Kilopi
 
Join Date: Oct 2001
Location: 22°20'42"S / 49°03'14"W
Posts: 8,284
Default

Quote:
Originally Posted by Launch window View Post
Association President Frances Cairncross said politicians and environmentalists put too much emphasis on trying to prevent climate change and not enough on adapting the world to the warmer temperatures it will bring
Yeah, since we have already lost the fight.
__________________
What brings us together is stronger than what pulls us apart
Reply With Quote
  #289 (permalink)  
Old 13-September-2006, 10:18 PM
Launch window's Avatar
Launch window Launch window is offline
Established Member
 
Join Date: Jul 2004
Posts: 2,013
Default

Quote:
Originally Posted by Fram View Post

Here is another recent study of Greenland's ice as well.
NASA data shows that Arctic perennial sea ice, which normally survives the summer melt season and remains year-round, shrunk abruptly by 14 percent between 2004 and 2005. According to researchers, the loss of perennial ice in the East Arctic Ocean neared 50 percent during that time as some of the ice moved from the East Arctic to the West.
http://www.nasa.gov/home/hqnews/2006...5_sea_ice.html
The overall decrease in winter Arctic perennial sea ice totals 280,000 square miles--an area the size of Texas. Perennial ice can be 10 or more feet thick. It was replaced by new, seasonal ice only about one to seven feet thick that is more
Reply With Quote
  #290 (permalink)  
Old 14-September-2006, 02:10 PM
Argos's Avatar
Argos Argos is offline
Order of Kilopi
 
Join Date: Oct 2001
Location: 22°20'42"S / 49°03'14"W
Posts: 8,284
Default

Well, Greelanders are very happy about it. They are experiencing an economic boom. People are talking about bringing cows in, and the last brocoli crop has broken all records. They can hardly wait for more warming.

Meanwhile, in the tropics...
__________________
What brings us together is stronger than what pulls us apart
Reply With Quote
  #291 (permalink)  
Old 14-September-2006, 05:43 PM
Lurker Lurker is offline
Banned
 
Join Date: Oct 2001
Location: Cupertino CA
Posts: 2,561
Send a message via AIM to Lurker Send a message via MSN to Lurker Send a message via Yahoo to Lurker
Default

Quote:
Originally Posted by Argos View Post
Well, Greelanders are very happy about it. They are experiencing an economic boom. People are talking about bringing cows in, and the last brocoli crop has broken all records. They can hardly wait for more warming.

Meanwhile, in the tropics...
The Vikings found Greenland at a time when it was warm enough to start a thriving colony, a few hundred years later the last of the colony were having to dig shallow graves for their dead during the summer months because the ground froze so hard in the winter. We live in an interglacial with very uncertain climate.
Reply With Quote
  #292 (permalink)  
Old 15-September-2006, 09:11 PM
Swift's Avatar
Swift Swift is offline
Moderator
 
Join Date: Sep 2003
Location: The beautiful north coast (Ohio)
Posts: 19,725
Default Study acquits sun of climate change

From CNN.com
Quote:
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.
__________________
At night the stars put on a show for free (Carole King)

One Earth, One Sky - IYA 2009
All moderation in purple
Reply With Quote
  #293 (permalink)  
Old 15-September-2006, 09:27 PM
korjik korjik is online now
Order of Kilopi
 
Join Date: Sep 2004
Posts: 3,792
Default

Quote:
Originally Posted by Swift View Post
From CNN.com
why would repeated 11 year averages have any effect on long term temps? I hope that is bad reporting and not bad science.

It also says that the sun isnt responsible to any of the well recorded climate changes (mostly europe tho) over the last couple thousand years.

In my opinion, this is saying that since the sun isnt responsible for any recorded climate change, humanity is responsible for this one. What caused the others then?

I guess this is mostly bad reporting Grrrrr....... [/rant]
Reply With Quote
  #294 (permalink)  
Old 15-September-2006, 10:34 PM
Swift's Avatar
Swift Swift is offline
Moderator
 
Join Date: Sep 2003
Location: The beautiful north coast (Ohio)
Posts: 19,725
Default

I finally tracked down the journal article, it is in the current issue of Nature (Abstract). I can't get the article for free, but below is the "Editor's Summary".
Quote:
Small variations in the Sun's power output, or luminosity, attract attention and controversy because of their possible implications for climate change. The changes arise from dark (sunspot) and bright (faculae) structures on the solar disk during the 11-year sunspot cycle. Since 1978 it has been possible to track these accurately with satellites, showing a variation of 0.07%. Foukal et al. review recent advances in our understanding of solar luminosity change and its effects on the energy balance on Earth. They conclude that solar brightening is unlikely to have had a significant effect on climate change since the seventeenth century. More speculative climate changes related to the Sun's ultraviolet light and magnetized plasma output are not yet ruled out, but are hard to quantify due to the complex interactions involved. The cover shows the structures responsible for the luminosity variations.
__________________
At night the stars put on a show for free (Carole King)

One Earth, One Sky - IYA 2009
All moderation in purple
Reply With Quote
  #295 (permalink)  
Old 17-September-2006, 05:01 AM
Lurker Lurker is offline
Banned
 
Join Date: Oct 2001
Location: Cupertino CA
Posts: 2,561
Send a message via AIM to Lurker Send a message via MSN to Lurker Send a message via Yahoo to Lurker
Default

Quote:
Originally Posted by Swift View Post
From CNN.com
Quote:
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.
Bold is mine...

Wow!! Is this ever bad science!!

There are any number of other factors that affect climate other than the brightness of the sun. To suggest that humans are responsible for increases or decreases in global temperatures simply because the sun's brightness has not changed much is utter foolishness and very very bad science!!
Reply With Quote
  #296 (permalink)  
Old 18-September-2006, 11:34 AM
Fram's Avatar
Fram Fram is offline
Established Member
 
Join Date: Aug 2004
Location: Buggenhout, Belgium
Posts: 3,140
Default

Quote:
Originally Posted by Lurker View Post
Bold is mine...

Wow!! Is this ever bad science!!

There are any number of other factors that affect climate other than the brightness of the sun. To suggest that humans are responsible for increases or decreases in global temperatures simply because the sun's brightness has not changed much is utter foolishness and very very bad science!!
Well, no... The consensus until recently was that the only factor that could be responsible for most of the global warming -apart from human contributions- was solar variance. If it now turns out that solar variance is not responsible for a lot of change in the global climate recently, then it clearly implies (as the quote said) that humans are responsible for most of the warming. Good science: only two possible explanations left, one looks to be wrong, then the implication is that the other one is right.

(And now I'll have a few weeks without that annoying 'you haven't contributesd in a while' message!)
__________________
Knowledge is a curse, but ignorance is worse
Reply With Quote
  #297 (permalink)  
Old 18-September-2006, 05:53 PM
Lurker Lurker is offline
Banned
 
Join Date: Oct 2001
Location: Cupertino CA
Posts: 2,561
Send a message via AIM to Lurker Send a message via MSN to Lurker Send a message via Yahoo to Lurker
Default

Quote:
Originally Posted by Fram View Post
Well, no... The consensus until recently was that the only factor that could be responsible for most of the global warming -apart from human contributions- was solar variance. If it now turns out that solar variance is not responsible for a lot of change in the global climate recently, then it clearly implies (as the quote said) that humans are responsible for most of the warming. Good science: only two possible explanations left, one looks to be wrong, then the implication is that the other one is right.

(And now I'll have a few weeks without that annoying 'you haven't contributesd in a while' message!)
It has never been the consensus that solar variance was the only cause for modifications in the climate of our planet. In fact, it is well know that there are many factors that contribute to ice ages and that even if solar output had been constant throughout the history of our planet there is every reason to believe that ice ages would have come and gone over time.

That makes the conclusion of the article very bad science...
Reply With Quote
  #298 (permalink)  
Old 18-September-2006, 08:40 PM
korjik korjik is online now
Order of Kilopi
 
Join Date: Sep 2004
Posts: 3,792
Default

Quote:
Originally Posted by Fram View Post
Well, no... The consensus until recently was that the only factor that could be responsible for most of the global warming -apart from human contributions- was solar variance. If it now turns out that solar variance is not responsible for a lot of change in the global climate recently, then it clearly implies (as the quote said) that humans are responsible for most of the warming. Good science: only two possible explanations left, one looks to be wrong, then the implication is that the other one is right.

(And now I'll have a few weeks without that annoying 'you haven't contributesd in a while' message!)
I have to agree with lurker that it is bad science. There hasnt been a major climate change recorded with modern instruments, and there hasnt been any major solar cycle anomalies recorded with modern instruments. (before anyone gets on my case that there is a change going on right now, I would point out that we are just in the beginning of a change, so it dosent count yet) There is some evidence that the little ice age was at the same time as the maunder minimum, but that would tend to mean that quick climate changes are more dependent on solar magnetic activity than on luminosity.

All this begs the question on wether it is man-made or not. This article is basically saying that the choices are man-made or solar, completely ignoring other natural cycles, such as ocean circulations that could be changing the environment. I am not saying that that is what is changing the climate, just that it is bad science to put it in terms of man-made/solar caused only.
Reply With Quote
  #299 (permalink)  
Old 19-September-2006, 04:13 AM
randycat99 randycat99 is offline
Established Member
 
Join Date: May 2005
Location: SoCal
Posts: 209
Send a message via AIM to randycat99
Default

To make the premise that much clearer, can we come up with a suitable time span of climatic data that would be relevant for climactic predictions? It surely isn't 10 years, probably not even 50 or 100 years, I think. At least a few centuries?

...anything less, and it's just garbage in/garbage out. It seems the GW crowd is insistent on using close measurements over the course of dawn to early morning in order to track a trend that suggests that winter will never arrive at the projected rate (as an example). Minute by minute in the early morning hours won't make one bit a difference on the price of tea in China, if you are trying to predict some climactic event that is to happen many months ahead.
__________________
Dude, don't be a Quaid!
Reply With Quote
  #300 (permalink)  
Old 30-November-2006, 06:21 PM
kryton kryton is offline
Banned
 
Join Date: Nov 2006
Posts: 80
Default Concrete and the weather?

Climatic changes over the modern years could also be attributed to something right before our eyes. Something obvious to me that I have read nothing about is the production of concrete. Models of climate change should include something such as this. A variant that changes per year as 5 billion cubic tons of thermal mass are added to the surface of the globe. Depending on where most of this activity is occurring climate changes could be affected locally and globally. The thermal mass of concrete in the forms of airports, highways, buildings, parking lots and sidewalks should be studied. We are hypothetically creating huge paved deserts which are in affect adding heat to the environment and changing the Earth's climate. Not to mention the runoff produced into the tributaries from all of this rainwater not being absorbed into the soils as would have normally occurred. Increasing runoff and contributing to flooding and resulting in a quicker turnabout of runoff water back into the weather cycle.

Last edited by kryton; 30-November-2006 at 08:03 PM..
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT. The time now is 01:33 AM.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2010, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.0.0
©  2006 Bad Astronomy and Universe Today