Comments on: Jacoby and D'Arrigo Archive Data! http://climateaudit.org/2006/04/12/jacoby-and-darrigo-archive-data/ by Steve McIntyre Sat, 18 May 2013 10:00:57 +0000 hourly 1 http://wordpress.com/ By: Paul Gosling http://climateaudit.org/2006/04/12/jacoby-and-darrigo-archive-data/#comment-48593 Thu, 13 Apr 2006 10:42:34 +0000 http://www.climateaudit.org/?p=628#comment-48593 Go on Steve. Take some gredit for the archiving, I am sure it is due.

]]> By: TCO http://climateaudit.org/2006/04/12/jacoby-and-darrigo-archive-data/#comment-48592 Wed, 12 Apr 2006 22:55:37 +0000 http://www.climateaudit.org/?p=628#comment-48592 Nice analyses, Steve.

]]> By: TCO http://climateaudit.org/2006/04/12/jacoby-and-darrigo-archive-data/#comment-48591 Wed, 12 Apr 2006 22:51:41 +0000 http://www.climateaudit.org/?p=628#comment-48591

Note that some very old trees (and the population is very small) are pretty frisky in their growth. This is a surprisingly common phenomenon. This interacts with the RCS methodology disproprotionately as the RCS curves are negative exponential

If you can do even a preliminary quantification of this effect, it is publishable (of course if preliminary, you must make the caveat that this is so).

]]> By: John Lish http://climateaudit.org/2006/04/12/jacoby-and-darrigo-archive-data/#comment-48590 Wed, 12 Apr 2006 21:47:00 +0000 http://www.climateaudit.org/?p=628#comment-48590

and the “adjusted” width attributed to the old trees is the observed ring width divided by the age-profile value which is down at low values – thus the “age-adjusted” ring width for these old codgers is very large.

This may seem like a simple question but how does one arrive at an “age-profile value” for a sample population?

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