Comments on: MWP Non-Dendro Proxies #2

By: Lucy Skywalker

Lucy Skywalker — Thu, 18 Sep 2008 17:43:20 +0000

I’ve just looked at Monckton’s recent paper’s 19 peer-reviewed studies, most since 2000, all of which clearly show the MWP; one even shows the solar correspondences. I then looked at the 41 records here, and not one showed the MWP clearly as all Monckton’s studies do. Silly question I’m sure to old hands, but are both his sets AND Mann’s sets cherry-picking? How can I start to compare these studies (bearing in mind there’s no text book on this)? The mere fact that there IS consistent evidence for the MWP, gathered by many different studies, makes all the noise proxies here look suspect.

Not being a statistician, I just looked at the shapes to see what use they might be to Mann. Visual analysis yielded these interesting groups:
16 Noise
10 Slight MWP
9 Strong / very strong HS (not just Korttajarvi)
3 Slight help to make HS
2 doubtful record
1 Opposes MWP
0 Strong MWP

Seems like noise would help drown out the slight MWP while not drowning the loud HS.

By: Dave Dardinger

Dave Dardinger — Sat, 13 Sep 2008 20:43:54 +0000

Re: John M Lancaster (#93), The Idsos don't do original research (in this area anyway). They find articles in the peer-reviewed literature which show a warm MWP. I don't expect, therefore, that any journal the IPCC would be interested in would publish such a report, probably claiming it was not original or old news. Of course if they could come up with some novel statistical technique....

By: stephen richards

stephen richards — Sat, 13 Sep 2008 20:31:41 +0000

“Dr B”

Brilliant just brilliant. That was Gavin et al to a tee. Tout à fait perfect !!!!
and what entertainment

By: Reference

Reference — Sat, 13 Sep 2008 11:21:09 +0000

Here is a link to the Medieval Warm Period Project

By: John M Lancaster

John M Lancaster — Sat, 13 Sep 2008 10:59:54 +0000

Can Craig Idso at CO2 science release a MWP report with data/graphs of the MWP to counter Mann ? Maybe he will make a move before the next IPCC.

http://www.co2science.org/articles/V9/N4/EDIT.php

By: John M Lancaster

John M Lancaster — Sat, 13 Sep 2008 10:51:40 +0000

Wouldn’t this be the time for CRAIG D. IDSO at CO2 science to release his data/graphs of the MWP, countering Mann,before the next IPCC ?
http://www.co2science.org/articles/V9/N4/EDIT.php

By: Sam Urbinto

Sam Urbinto — Thu, 11 Sep 2008 21:41:28 +0000

Look, just because you’re insane doesn’t mean you’re a bad person.

By: Mark T.

Mark T. — Thu, 11 Sep 2008 21:22:08 +0000

Re: Douglas M. Chatham (#89),

including how each measurement relates to temperature.

Wouldn’t we all?

Mark

By: Bishop Hill

Bishop Hill — Thu, 11 Sep 2008 21:00:15 +0000

Re: Douglas M. Chatham (#89), You could try the NAS report. That has a good introduction covering all the main proxy types as well as more detailed analysis of how they are affected by T. Link You can get a free download at the link above, but it's a big file.

By: Douglas M. Chatham

Douglas M. Chatham — Thu, 11 Sep 2008 18:52:00 +0000

I am trying to learn something about temperature proxies. Is there a convenient place to get a definition of the different proxies used by Mann and/or by anyone else? I’m also trying to understand the different types of proxies (tree-ring, coral, ice-core, etc.), including how each measurement relates to temperature. Any recommendations for this novice would be greatly appreciated.