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Man made global warming: The Medieval Warm Period -- fact vs. fiction and a history of the hockey stick

Science always moves forward as new evidence comes along.

From Potholer54 on Youtube:

This video looks at the scientific research to answer three basic
questions: 1) Was the Medieval Warm Period global? 2) Was it warmer than
today? 3) And what does this all mean anyway? I examine the internet
feud over the hockey stick and the various myths and misinterpretations
about the Medieval Warm Period that seem to be rife on the Internet. My
sources for the myths are blogs and videos; my sources for the facts are
scientific papers.

CORRECTION AT 5:51: The graph without recent
temperatures is not the work of a blogger after all, it comes from the
researchers themselves. This does not change the fact that this graph
was used by the Daily Mail to incorrectly infer that the MWP was warmer
than today, while the graph the researchers used to show recent
temperatures was not shown.

SOURCES

0:45 Christopher Monckton interview with Michael Coren

01:23 http://www.co2science.org/education/reports/prudentpath/ch1.php
and
http://scienceandpublicpolicy.org/images/stories/papers/blogwatch/nova_hidden...


02:18 Ibid

02:42
"Global-scale temperature patterns and climate forcing over the past
six centuries" -- ----- Mann Bradley and Hughes, Nature 1998

02:50 "Northern Hemisphere Temperatures During the Past
Millennium: Inferences, Uncertainties, and Limitations" Mann Bradley and Hughes, American Geophysical Union. 1999

03:03 "Hockey sticks, principal components, and spurious significance" -- McIntyre and McKitrick, Geophysical Research Letters 2005

03:18 "Surface Temperature Reconstructions for the Last 2,000 years" National Academy of Sciences

03:41
"Ad Hoc Committee Report on the 'Hockey Stick' Global [sic] Climate
Reconstruction" -- Edward Wegman, published in Computational Statistics
and Data Analysis 2008

"Climate study gets pulled after charges of plagiarism" http://www.usatoday.com/weather/climate/globalwarming/2011-05-15-climate-stud...

04:21 "Proxy-based reconstructions of hemispheric and global surface temperature variations
over the past two millennia" Mann et al, PNAS 2008

05:10 "Orbital Forcing of Tree Ring Data" Esper et al, Nature Climate Change 2012

05:20 Daily Mail story: http://www.dailymail.co.uk/sciencetech/article-2171973/Tree-ring-study-proves...

06:23
"A NEW RECONSTRUCTION OF TEMPERATURE VARIABILITY IN THE EXTRA-TROPICAL
NORTHERN HEMISPHERE DURING THE LAST TWO MILLENNIA" Lungqvist, Swedish
Society for Anthropology and Geography 2010

07:00 "Catastrophe Denied" by Warren Myer

07:37 "Highly variable Northern Hemisphere temperatures reconstructed from
low- and high-resolution proxy data" -- Moberg, Nature 2005

08:21 "A 2000-YEAR GLOBAL TEMPERATURE RECONSTRUCTION
BASED ON NON-TREERING PROXIES" -- Loehle 2007

08:28 Joannenova.com

08:40 "Correction to: A 2000-YEAR GLOBAL TEMPERATURE
RECONSTRUCTION BASED ON NON-TREE RING PROXIES" Loehle 2008

08:50 Ibid

09:01 http://www.skepticalscience.com/new-remperature-reconstruction-vindicates.html

09:15 "The Great Global Warming Swindle" -- by Martin Durkin Channel 4

09:26 "Global Warming Sunspots Explained" by David Archibald

09:31 "Catastrophe Denied" by Warren Myer

09:35 "The Truth About Global Warming" by David Icke

09:48 IPCC report, Chapter 7, 1990
10:10 McIntyre

10:19 "High-resolution palaeoclimatology of the last millennium: a review of current
status and future prospects" Jones et al, The Holocene, 2009

11:40 Global Warming (or is it Global Cooling)' http://rogerfromnewzealand.wordpress.com/porky-no-3-ipcc-attempts-to-change-h...

14:59 Joannenova.com

17:24 "Unstoppable Solar Cycles"
http://www.youtube.com/watch?v=Cl4Pz1mwBao


19:10
"Extra-tropical Northern Hemisphere land temperature variability over
the past 1000 years" Cook et al., Quaternary Science Reviews 2004

19:24 "Long-Term Aridity Changes in the Western United States" -- Cook et al, Science 2004
See also: "Drought Reconstructions for the Continental United States" -- Cook et al, Journal of Climate 2004

19:27 "The 'Mediaeval Warm Period' drought recorded in Lake Huguangyan, tropical
South China" -- Chu et al, The Holocene 2002

19:29
"Amazonia suffered immense drought between 700-800 AD and 1000-1100 AD"
(Fire, Climate Change and Biodiversity in Amazonia: a Late Holocene
Perspective. M. Bush. Phil. Trans. Royal Society. 2008. Archaeological
Evidence for the Impact of Mega-Nino Events on Amazonia during the past
two Millennia. B. Meggers. Smithsonian. 1994.)

19:33 http://www.newscientist.com/movie/usmap

19:45 "Drought Under Global Warming: a review" -- Aiguo Dai, Wiley Interdisciplinary Reviews: Climate Change 2011
https://www2.ucar.edu/atmosnews/news/2904/climate-change-drought-may-threaten...


Added: Jul-31-2012 Occurred On: Jul-31-2012
By: kiddkidd
In: Science and Technology
Tags: man made global warming, medieval warm period, hockey stick, potholer54, science is not a liberal conspiracy
Marked as: approved
Views: 2540 | Comments: 86 | Votes: 1 | Favorites: 2 | Shared: 0 | Updates: 0 | Times used in channels: 1
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  • Enviro mental propganda hogwash is what the entire global warming fraud is, always has been, and always will be.

    As we learn more about science we learn that much of what is called science isn't science at all but mislabeled snake oil.

    Posted Aug-1-2012 By 
    TheLastDay (78.40)

    (4)

    • @TheLastDay thanks for embarrassing yourself because you made it clear you didn't watch the vid because it totally contradicts what you just wrote. typical denier.

      Posted Aug-1-2012 By 
      kiddkidd (577.26)  

      (-4)

    • @kiddkidd A video posted by you contradicts the facts? What a surprise!

      You are incapble of comprehending science.

      Posted Aug-1-2012 By 
      TheLastDay (78.40)

      (3)

    • @kiddkidd thanks for embarrassing yourself because you made it clear you believe that this isn't a complete shill job, made to keep the manmade global warming scare going. blog's are nothing but bs, not proof that scientific data is wrong.

      Posted Aug-1-2012 By 
      danmoc13 (329.40)  

      (1)

    • @TheLastDay what facts do they contradict?

      Posted Aug-1-2012 By 
      kiddkidd (577.26)  

      (-1)

    • @danmoc13 and what is the peer-reviewed literature in the reputable scientific journals? a huge conspiracy?

      Posted Aug-1-2012 By 
      kiddkidd (577.26)  

      (0)

  • Comment of user 'anonymousr' has been deleted by author!

  • Chicken little is still crying over the so called gobal warming.

    Posted Aug-1-2012 By 
    elmerfudd13 (2100.50)  
    elmerfudd13
    Send Message

    (1)

    • @elmerfudd13 i debunked this already on my last post. repeating something over and over again does not make it true. and it is pretty obvious you didn't watch the vid as well.

      Posted Aug-1-2012 By 
      kiddkidd (577.26)  

      (0)

    • @kiddkidd If only you could learn that lesson. Just because the GW lobby repeats it's propaganda hogwash a million times claiming concensus among the bought and paid for propaganda hogwashers doesn't make it so.

      Posted Aug-1-2012 By 
      TheLastDay (78.40)

      (1)

    • @TheLastDay again, your response is that you believe expert climatologists are faking millions points of data and thousands of scientific papers in dozens of different scientific fields and then cross-matching them so that they all tell a story that is 180 degrees opposed to reality and also making sure no one blabs about it.

      Posted Aug-1-2012 By 
      kiddkidd (577.26)  

      (-1)

  • I'm glad Peter Hadfield (aka Potholer54) is starting to see the light.

    This is another admission by a CAGW believer that the hockey stick was bunkum - but he did not make a single mention of the fact that there was deliberate doctoring of data by Mann to remove the MWP to create the hockey stick. Not only was this doctoring clearly evidenced in the Climategate emails, but is plain in real observational data, and is becoming plainer with release of the original data that the hockey stick was ba More..

    Posted Aug-1-2012 By 
    Cadae (144.08)  

    (1)

    • @Cadae lol. twist words much? give me the time in the vid where potholer says it was bunkum. and the climategate emails... you mean the so-called scandal where 8 separate committees investigated the allegations and published reports, finding no evidence of fraud or scientific misconduct?

      let me guess..... those 8 separate committees were also part of the conspiracy of expert climatologists who are faking millions points of data and thousands of scientific papers in dozens of different scienti More..

      Posted Aug-1-2012 By 
      kiddkidd (577.26)  

      (0)

    • @kiddkidd
      To answer your question - 02:10 - Hadfield admits the evidence shows that the MWP was real AND global - i.e. the hockey stick was rubbish.

      Mann had to destroy or bury the MWP so as to make any recent warming look unprecedented and to create the hock-stick handle. He says as much in his emails. He went against all evidence of that time AND faked his charts via cherry-picking and abusing the data presentation to achieve the hockey-stick.

      8 committees of 'expert Climatologists' - lo More..

      Posted Aug-2-2012 By 
      Cadae (144.08)  

      (0)

    • @Cadae lol. he doesn't say it was global, he says the evidence is pointing to it being global. and no one denies the MWP. and the vid clearly shows that no one was trying to hide the MWP, but rather science progressed as more evidence became available. lol.

      and surprise, you think it is all a huge conspiracy theory. i'm shocked.

      Posted Aug-2-2012 By 
      kiddkidd (577.26)  

      (0)

    • @kiddkidd
      You quote "and no one denies the MWP" - but that's exactly what Mann did - he denied it despite there always being plenty of evidence for an extensive MWP. Hadfield is trying to defend his hero by trying to re-write history with the spin that the evidence for a global MWP is a recent discovery.

      Mann's killing of the MWP was against the evidence even at the time he did it. It turns out that even in his own data set he cherry-picked to destroy his very own clear evidence of t More..

      Posted Aug-2-2012 By 
      Cadae (144.08)  

      (0)

  • No matter what you put in this video in your pompous (even for) English accent (is that really you kiddkidd?) McIntyre is one deadly serious opponent. He knows his maths and stats way better than Mann and his catomites.

    The prime reporter on 'global satellite temperature' is Roy Spencer of UAH. He's the one who constantly reports ever increasing air temperatures (widely reported) and who constantly says they are bogus (not widely reported). The numbers are correct, not the public interpretation More..

    Posted Aug-1-2012 By 
    DEADBEEF (4170.56)  

    (0)

    • @DEADBEEF no, i had hoped to make it clear this isn't my vid. it is potholer54 on youtube. btw, both mcintyre and spencer have been wrong way more times that they have been right.

      and spencer doesn't even believe in macro-evolution. and if you think mcintyre is so formidable, check out how the company he runs is doing.

      Posted Aug-1-2012 By 
      kiddkidd (577.26)  

      (0)

    • @kiddkidd

      Your comment about Spencer is an Ad-hom (as is your flail at McIntyre)

      McIntyre has withstood innumerable attacks on his maths and come out untarnished - unlike Mann & Co.

      Address the ocean energy flux conundrum and I'll pay more attention.

      Posted Aug-1-2012 By 
      DEADBEEF (4170.56)  

      (0)

    • @DEADBEEF mcintyre's attack was ad-hom, but not the one on spencer. anyone like spencer who doesn't believe in evolution and instead believes in intelligent design does not follow the scientific method.

      mcintyre has withstood innumerable McIntyre has withstood innumerable attacks on his maths and come out untarnished - unlike Mann & Co., and yet mcintyre believe the hockey stick is wrong even though it it been endorsed by every major scientific organization. seriously?

      please refer me to More..

      Posted Aug-1-2012 By 
      kiddkidd (577.26)  

      (0)

    • @kiddkidd

      Sorry. My Internet browser must be faulty.

      It didn't show any comment by you about Ocean Energy Flux.

      Can you try and re-comment please?

      Posted Aug-1-2012 By 
      DEADBEEF (4170.66)  

      (0)

    • @DEADBEEF by the way, i browsed your channel and see you are a fan of christopher hitchens. i'm curious as to how you block out the fact that creationists and man-made climate change deniers are teaming up together across the united states to pass anti-science education laws. how are you able to justify that in your mind? thanks.

      Posted Aug-1-2012 By 
      kiddkidd (577.26)  

      (0)

  • Glad people are waking up to the GW propaganda farce at least. One down ten thousand to go.

    Posted Aug-1-2012 By 
    TheLastDay (78.40)

    (0)

    • @TheLastDay i already pwned you on the earlier comment you wrote below that is very similar to this one. you obviously haven't even watched the vid, and repeating the same pointless comments over and over only prove you are a denier and not a skeptic.

      Posted Aug-1-2012 By 
      kiddkidd (577.26)  

      (0)

    • @kiddkidd You are delusional. LOL

      Posted Aug-1-2012 By 
      TheLastDay (78.40)

      (0)

  • It was aliens.

    Posted Aug-1-2012 By 
    12obert_G (127.56)  

    (0)

  • Interesting that a video pointing out how graphs used to debunk global warming end in 1950, but then he ends his own data at 2000. And the next 12 years are?

    Posted Aug-1-2012 By 
    kajidono (686.26)  

    (0)