Looking at your graph, from the (consensus?) 15thc trough to late 20th c peak is over 1.0 C, which would exceed even the high end .8C drop. Which would indicate that yes, the end of the 20th century had the highest temps since 900 CE (and thats not reflecting what I understand is continued warming from 1999 to 2006)
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Originally posted by lord of the mark
Looking at your graph, from the (consensus?) 15thc trough to late 20th c peak is over 1.0 C, which would exceed even the high end .8C drop. Which would indicate that yes, the end of the 20th century had the highest temps since 900 CE (and thats not reflecting what I understand is continued warming from 1999 to 2006)
Absolute numbers from times preceeding 15th century are contended (as well as the shape in the MBH case).
MBH flattened trough to peak to only .2 C via improper statistical treatments.
Other historical temperatures constructions are in question not for the shape of the signal as much the absolute value of the data, primarily for choice and weighting of some questionable proxy sources to begin with.
The point of this entire exercise is ability to test models backwards and forwards. If historical temperature proxies have significant confidence range issues than they can't realistically be tested, leaving only reconstructions via the very limited 1850 onward as the means to test climate models.
By the by, look closely at the original IPCC 2001 graph. Notice the gray bands denoting confidence levels. The error bands are huge."Just puttin on the foil" - Jeff Hanson
“In a democracy, I realize you don’t need to talk to the top leader to know how the country feels. When I go to a dictatorship, I only have to talk to one person and that’s the dictator, because he speaks for all the people.” - Jimmy Carter
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Originally posted by Ogie Oglethorpe
By the by, look closely at the original IPCC 2001 graph. Notice the gray bands denoting confidence levels. The error bands are huge."A person cannot approach the divine by reaching beyond the human. To become human, is what this individual person, has been created for.” Martin Buber
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Originally posted by Drake Tungsten
Man, Gore is attracting all kinds of unwanted attention these days...
Al Gore Breaches Airport Security
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Originally posted by lord of the mark
Is that a standard 97% confidence range?"Just puttin on the foil" - Jeff Hanson
“In a democracy, I realize you don’t need to talk to the top leader to know how the country feels. When I go to a dictatorship, I only have to talk to one person and that’s the dictator, because he speaks for all the people.” - Jimmy Carter
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Originally posted by Kuciwalker
Does Bush go through security?I make no bones about my moral support for [terrorist] organizations. - chegitz guevara
For those who aspire to live in a high cost, high tax, big government place, our nation and the world offers plenty of options. Vermont, Canada and Venezuela all offer you the opportunity to live in the socialist, big government paradise you long for. –Senator Rubio
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Originally posted by Ogie Oglethorpe
MBH flattened trough to peak to only .2 C via improper statistical treatments."A person cannot approach the divine by reaching beyond the human. To become human, is what this individual person, has been created for.” Martin Buber
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Originally posted by Kuciwalker
Serious question: when did he stop getting secret service protection?I make no bones about my moral support for [terrorist] organizations. - chegitz guevara
For those who aspire to live in a high cost, high tax, big government place, our nation and the world offers plenty of options. Vermont, Canada and Venezuela all offer you the opportunity to live in the socialist, big government paradise you long for. –Senator Rubio
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Based on the article, it would seem you are in the wrong.I make no bones about my moral support for [terrorist] organizations. - chegitz guevara
For those who aspire to live in a high cost, high tax, big government place, our nation and the world offers plenty of options. Vermont, Canada and Venezuela all offer you the opportunity to live in the socialist, big government paradise you long for. –Senator Rubio
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LotM,
I understand where you are going with this saying OK if you believe circa 1600 data simply add .8 C to it according to the other reconstruction data. Viola you got the high point for the MWP.
My point is that there is question about the validity of the other reconstruction data as well as they all incorporated proxies of questionable validity (at least according to the critics). In other words it is very likely these are flawed as well for the choice of proxies to include but not the statistical treatment of the data. Meaning the peak to trough difference is likely even greater than 0.8 C were the suspect proxies not used.
Point being although claimed as settled, no more discussion, full stop the arguement rages on.
What is acknowledged and agreed to by almost everyone is 1850 -2006. (although it is interesting even in the instrument period the loss of temperature recording stations)
Generally 1600 onwards for the most part is agreed to
Lots of disagreement from there back."Just puttin on the foil" - Jeff Hanson
“In a democracy, I realize you don’t need to talk to the top leader to know how the country feels. When I go to a dictatorship, I only have to talk to one person and that’s the dictator, because he speaks for all the people.” - Jimmy Carter
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