Comments on: Mann 2008: the Briffa MXD Network http://climateaudit.org/2008/09/22/the-new-rain-in-maine/ by Steve McIntyre Sat, 18 May 2013 19:12:55 +0000 hourly 1 http://wordpress.com/ By: RC’s response to McShane and Wyner: a case of orange cones | Watts Up With That? http://climateaudit.org/2008/09/22/the-new-rain-in-maine/#comment-241923 Thu, 23 Sep 2010 07:02:33 +0000 http://www.climateaudit.org/?p=3747#comment-241923 [...] “data quality control” when Mann himself has issues with his own papers such as incorrect lat/lon values of proxy samples, upside down Tiljander sediment proxies, and truncated/switched data, is mind boggling. It’s [...]

]]> By: Julian Flood http://climateaudit.org/2008/09/22/the-new-rain-in-maine/#comment-163298 Wed, 24 Sep 2008 19:29:35 +0000 http://www.climateaudit.org/?p=3747#comment-163298 quote a “gentleman” unquote.

Tut tut. With a Scottish highland name and you’ve forgotten the bard.

The rank is but the guinea’s stamp.

JF

]]> By: Jeff Id http://climateaudit.org/2008/09/22/the-new-rain-in-maine/#comment-163297 Wed, 24 Sep 2008 17:12:24 +0000 http://www.climateaudit.org/?p=3747#comment-163297 I see. Another data pile. How can it be so mixed up?

I be those guys stop by just to watch the confusion.

]]> By: Steve McIntyre http://climateaudit.org/2008/09/22/the-new-rain-in-maine/#comment-163296 Wed, 24 Sep 2008 15:13:17 +0000 http://www.climateaudit.org/?p=3747#comment-163296 discussion moved to Replication thread

]]> By: Jean S http://climateaudit.org/2008/09/22/the-new-rain-in-maine/#comment-163295 Wed, 24 Sep 2008 14:31:39 +0000 http://www.climateaudit.org/?p=3747#comment-163295 Re: Steve McIntyre (#28),
could you post the id’s along withs locations of (let’s say) 10 series with greatest (remaining) difference? It would help to figure out from where the remaining difference is coming.

]]> By: Steve McIntyre http://climateaudit.org/2008/09/22/the-new-rain-in-maine/#comment-163294 Wed, 24 Sep 2008 13:40:07 +0000 http://www.climateaudit.org/?p=3747#comment-163294 The following graphic replaces the one posted in #23. I had incompletely patched Mann’s erroneous SI lat-longs in the graphic in #23. The big issue with this data set is the 1960 truncation. The proportion of high correlations in this dataset appears to be higher than for tree ring data as a whole, which also needs to be examined.

]]> By: Steve McIntyre http://climateaudit.org/2008/09/22/the-new-rain-in-maine/#comment-163293 Tue, 23 Sep 2008 22:22:38 +0000 http://www.climateaudit.org/?p=3747#comment-163293 #25. I’ve already controlled for that. In the Briffa MXD area, the issue doesn’t really arise.

]]> By: Jeff Id http://climateaudit.org/2008/09/22/the-new-rain-in-maine/#comment-163292 Tue, 23 Sep 2008 22:00:30 +0000 http://www.climateaudit.org/?p=3747#comment-163292 I tried to post this earlier but something went wrong.

How hard is it for your software to sort through all gridcells to find an r match to the reported value? It might clear up some of the lat long issues also.

]]> By: Jean S http://climateaudit.org/2008/09/22/the-new-rain-in-maine/#comment-163291 Tue, 23 Sep 2008 21:11:09 +0000 http://www.climateaudit.org/?p=3747#comment-163291 Re: Steve McIntyre (#23),

It’s a mystery.

I think (a part of) the difference might be coming from the fact that not all instrumental cells which have values are used (those with less than 10% data are disregarded). See here.

]]> By: Steve McIntyre http://climateaudit.org/2008/09/22/the-new-rain-in-maine/#comment-163290 Tue, 23 Sep 2008 20:45:11 +0000 http://www.climateaudit.org/?p=3747#comment-163290 I’ve uploaded a script from which the above graphic was calculated.
http://data.climateaudit.org/scripts/mann.2008/temperature.correlation.txt

It might still contain some local references – I have tested it fully turnkey. However, it will deliver you a collated version of Mann’s temperature matrix (inst) and an R list statlist with 6 items each being a 1209×3 table of correlations as described in the script.

A few plots are shown but I’ve done others.

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