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Cold Facts and Warm Knights

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Balladeer
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0 posted 01-10-2010 07:37 AM       View Profile for Balladeer   Email Balladeer   Edit/Delete Message      Find Poems   Click to visit Balladeer's Home Page   View IP for Balladeer

Global Warming: Medieval Era Hotter than Today
The London Telegraph ^ | 06/04/2003) | Robert Matthews

Middle Ages were warmer than today, say scientists

By Robert Matthews, Science Correspondent (Filed: 06/04/2003)

Claims that man-made pollution is causing "unprecedented" global warming have been seriously undermined by new research which shows that the Earth was warmer during the Middle Ages.

From the outset of the global warming debate in the late 1980s, environmentalists have said that temperatures are rising higher and faster than ever before, leading some scientists to conclude that greenhouse gases from cars and power stations are causing these "record-breaking" global temperatures.

Last year, scientists working for the UK Climate Impacts Programme said that global temperatures were "the hottest since records began" and added: "We are pretty sure that climate change due to human activity is here and it's accelerating."

This announcement followed research published in 1998, when scientists at the Climatic Research Unit at the University of East Anglia declared that the 1990s had been hotter than any other period for 1,000 years.

Such claims have now been sharply contradicted by the most comprehensive study yet of global temperature over the past 1,000 years. A review of more than 240 scientific studies has shown that today's temperatures are neither the warmest over the past millennium, nor are they producing the most extreme weather - in stark contrast to the claims of the environmentalists.

The review, carried out by a team from Harvard University, examined the findings of studies of so-called "temperature proxies" such as tree rings, ice cores and historical accounts which allow scientists to estimate temperatures prevailing at sites around the world.

The findings prove that the world experienced a Medieval Warm Period between the ninth and 14th centuries with global temperatures significantly higher even than today.

They also confirm claims that a Little Ice Age set in around 1300, during which the world cooled dramatically. Since 1900, the world has begun to warm up again - but has still to reach the balmy temperatures of the Middle Ages.

The timing of the end of the Little Ice Age is especially significant, as it implies that the records used by climate scientists date from a time when the Earth was relatively cold, thereby exaggerating the significance of today's temperature rise.

According to the researchers, the evidence confirms suspicions that today's "unprecedented" temperatures are simply the result of examining temperature change over too short a period of time.

The study, about to be published in the journal Energy and Environment, has been welcomed by sceptics of global warming, who say it puts the claims of environmentalists in proper context. Until now, suggestions that the Middle Ages were as warm as the 21st century had been largely anecdotal and were often challenged by believers in man-made global warming.

Dr Philip Stott, the professor emeritus of bio-geography at the University of London, told The Telegraph: "What has been forgotten in all the discussion about global warming is a proper sense of history."

According to Prof Stott, the evidence also undermines doom-laden predictions about the effect of higher global temperatures. "During the Medieval Warm Period, the world was warmer even than today, and history shows that it was a wonderful period of plenty for everyone."

http://www.freerepublic.com/focus/f-news/886494/posts
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Wikipedia administrator edits over 5000 articles to hide natural “medieval” global warming http://www.wnd.com/index.php?fa=PAGE.view&pageId=119745

A new report reveals a British scientist and Wikipedia administrator rewrote climate history, editing more than 5,000 unique articles in the online encyclopedia to cover traces of a medieval warming period – something Climategate scientists saw as a major roadblock in the effort to spread the global warming message.

Recently hacked e-mails from the University of East Anglia’s Climate Research Unit expose a plot to eliminate the Medieval Warm Period, a 400-year era that began around A.D. 1000, the Financial Post’s Lawrence Solomon reports.

The warming period is said to have improved agriculture and increased life spans, but scientists at the center of the Climategate e-mail scandal believed the era undermined their goal of spreading concern about global warming as it pertains to today’s climate.

Solomon noted the warming period presented a dilemma long before the Climategate e-mail scandal.

A 1995 e-mail predating the recent Climate Research Unit scandal was sent to geophysicist David Deming. A major climate-change researcher told Deming, “We have to get rid of the Medieval Warm Period.”

Some scientists later expressed concern about erasing the period.

One chief practitioner identified as Keith Briffa, said in a Sept. 22, 1999, e-mail, “I know there is pressure to present a nice tidy story as regards ‘apparent unprecedented warming in a thousand years or more in the proxy data’ but in reality the situation is not quite so simple. … I believe that the recent warmth was probably matched about 1,000 years ago.”

Beginning in February 2003, Connolley rewrote Wikipedia entries on global warming, the greenhouse effect, the instrumental temperature record, the urban heat island, on climate models and on global cooling, according to the report. In February, he began editing the Little Ice Age. By August, he began to rewrite history without the Medieval Warm Period. In October, he turned to the hockey-stick chart.

“He rewrote articles on the politics of global warming and on the scientists who were skeptical of the band,” Solomon explains. “Richard Lindzen and Fred Singer, two of the world’s most distinguished climate scientists, were among his early targets, followed by others that the band especially hated, such as Willie Soon and Sallie Baliunas of the Harvard-Smithsonian Center for Astrophysics, authorities on the Medieval Warm Period.”

Through his role as a Wikipedia administrator, Connolley is said to have created or rewritten 5,428 unique Wikipedia entries.
http://seeker401.wordpress.com/2009/12/24/w ikipedia-administrator-edits-over-5000-articles-to-hide-natural-medieval-global-warming/
Denise
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1 posted 01-10-2010 10:26 PM       View Profile for Denise   Edit/Delete Message      Find Poems  View IP for Denise

I hear it's pretty cold down there in your neck of the woods, Michael. Try to keep warm!
Balladeer
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2 posted 01-10-2010 10:52 PM       View Profile for Balladeer   Email Balladeer   Edit/Delete Message      Find Poems   Click to visit Balladeer's Home Page   View IP for Balladeer

You have no idea, Denise!! We are in agony here!
Bob K
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3 posted 01-11-2010 11:15 AM       View Profile for Bob K   Email Bob K   Edit/Delete Message      Find Poems  View IP for Bob K



     Bet you're glad there's no such thing as global climate change, then?

     Woops!  That's supposed to be your line.
Grinch
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4 posted 01-11-2010 11:47 AM       View Profile for Grinch   Email Grinch   Edit/Delete Message      Find Poems  View IP for Grinch

Thanks for the old news Mike.
    

I read the paper by Willie Soon and Sallie Baliunas about 5 years ago. As a matter of interest, did you have as many reservations when you read it as I had? The use of tree ring samples for example, which are unreliable as measures of temperature? What about the limited geographical locations selected? Did you find it odd that southern hemisphere samples, and some northern hemisphere samples, dont show the same results?

I read a far better paper in 2008 by Craig Loehle, his study ignored tree-ring data and included an acknowledgement that the two events may not have been global, based on the general lack of data and the contradictory evidence from other sites. He still estimated that the MWP in a band of the northern hemisphere was potentially 0.3 degrees warmer than the measured temperatures at the same 18 sites in 2000.

Personally, I dont have a big problem accepting Loehles figures for the 18 sites, at least hes settled the argument from some quarters that the MWP and LIA didnt occur. What he hasnt done however is prove that either were global phenomena, nor has he highlighted a possible cause, or explained why the recent rise has been so rapid.

Still its good to know that weve moved on since Soon and Baliunas wrote their paper in 2003.

quote:
Through his role as a Wikipedia administrator, Connolley is said to have created or rewritten 5,428 unique Wikipedia entries.


Id be very surprised if he hadnt Mike contributing to,and Administering, a site sort of implies a certain amount of involvement.

The question is whether his creations and edits were reasonable fortunately you can check that out yourself because a full edit history is available. I checked out 5 at random, none of which seemed suspicious.

As to whether theres been a concerted effort to expunge the MWP and LIA Id have to say that if there has been its been a complete and utter failure. The interweb is absolutely crammed full of information regarding those two periods, from reputable sources and even Wikipedia itself has numerous informative articles containing verifiable data.

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Balladeer
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5 posted 01-11-2010 06:49 PM       View Profile for Balladeer   Email Balladeer   Edit/Delete Message      Find Poems   Click to visit Balladeer's Home Page   View IP for Balladeer

Bet you're glad there's no such thing as global climate change, then?

Ah, Bob, once again your attempt at light sarcasm misses the mark. I've ALWAYS said that there is global climate change. The question is whether it is man-made or not or a natural occurence. You haven't gotten that yet?
Huan Yi
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6 posted 01-11-2010 07:26 PM       View Profile for Huan Yi   Email Huan Yi   Edit/Delete Message      Find Poems  View IP for Huan Yi


.

"Bet you're glad there's no such thing as global climate change, then?"

Which is a change from "Global Warming"

.
Bob K
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7 posted 01-11-2010 10:03 PM       View Profile for Bob K   Email Bob K   Edit/Delete Message      Find Poems  View IP for Bob K


     True, John.  I still think there's global warming.  But I found the notion of tweaking Mike hard to resist.

     I'm always interested to see more evidence, especially if the evidence is good, as in peer reviewed, but it still seems very solid.

     The notion of tweaking Mike is still difficult to resist, but I do try my best.  In my own defense, he does so like to tweak me, and he seems to have so much fun doing so.

    Any disagreement from the Mike side of the picture here?

[This message has been edited by Bob K (01-12-2010 07:48 PM).]

Bob K
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8 posted 01-12-2010 07:51 PM       View Profile for Bob K   Email Bob K   Edit/Delete Message      Find Poems  View IP for Bob K



     Evidently I waited too long to correct "the evidence is goo" to "the evidence is good."  I'd rather not deal with goo as evidence, in case there's any misunderstanding.  In case there is amusement, it was an authentic gaff and not an attempt at wit, so please feel free to laugh at me and not with me.  I should have proof-read.
Balladeer
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9 posted 01-12-2010 08:43 PM       View Profile for Balladeer   Email Balladeer   Edit/Delete Message      Find Poems   Click to visit Balladeer's Home Page   View IP for Balladeer

NO disagreement here, Bob. Actually, we could begin our own web site entitled Tweaker, instead  of Twitter. Worked for them
Ron
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I doubt it would work for anyone here, Mike. Trying to limit any of us to 140 characters would be fruitless, I suspect.
Balladeer
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11 posted 01-12-2010 10:48 PM       View Profile for Balladeer   Email Balladeer   Edit/Delete Message      Find Poems   Click to visit Balladeer's Home Page   View IP for Balladeer

LOL...you'll get no disagreement there, Ron
Essorant
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12 posted 01-13-2010 12:29 AM       View Profile for Essorant   Email Essorant   Edit/Delete Message      Find Poems   Click to visit Essorant's Home Page   View IP for Essorant

Climate myths: It was warmer during the Medieval period, with vineyards in England

Climate myths: It's been far warmer in the past, what's the big deal?


quote:
"It [the Medieval Warm Period] was a wonderful period of plenty for everyone"


You might find these points interesting, from Robert Henson's The Rough Guide to Climate Change:

"It may indeed have been an optimal climate for Europeans, or at least a liveable one, but people in parts of the Americas suffered from intense drought that ravaged entire cultures.

One example is the Mayans, whose empire extended from present-day Mexico across much of Central America.  After nearly 2000 years of development, many Mayan cities were abandoned between about 750 and 950 AD.  Sediments in the nearby Carribean reveal several strong multi-year droughts during this period.  The Mayan collapse in eastern Mexico apparently coincided with that region's most intense and prolonged drought in over a millenium.

To the north, Anasazi settlements near the US four Corners region experienced periods of erratic rain and snow during the Medieval Warm period.  Tree-ring studies indicate an especially intense drought near the end of the 1200s, when the culture's emblematic cliff dwellings were abandoned.  Scholars in recent years have warned against pinning the Mayan and Anasazi declines solely on drought, pointing to signs of other factors such as migration, a high demand on trees and other resources, and power struggles within each culture and with neighbouring peoples.   However, climatic stresses can't have helped matters.
"
 
  
 
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