Comments on: Briffa Archives Tree Ring Data!

By: Alex Atkinson

Alex Atkinson — Thu, 08 Jul 2010 19:50:09 +0000

I’ve been re-working speleothem data from a number of locations and comparing them to solar activity proxies for the past ~2000 years. Spannagel is an *extremely* unusual case and I am unsure as to the quality of this temperature reconstruction. If you re-work their data using the above link, and compare this to solar activity (which is availabe at radiocarbon.org – pref. use the intcal04 data set), there seems to be a 50 year shift in the solar activity data. For example, if we look at the Dalton Minimum, it appears to occur around ~1750 at Spannagel, whilst in the solar record it’s known to have onset around 1790. The whole tuning of this record is suspect and the original paper poorly explains how this record has been produced.

By: david fisher

david fisher — Thu, 13 Dec 2007 18:58:11 +0000

It is very old news by now , but I asked Briffa for data back in the 1990s and he sent me everything I asked for and then some. Research ususally has a large dose of the informal about it. Briffa is not a secretive guy.

By: TCO

TCO — Wed, 21 Sep 2005 18:00:47 +0000

Would like some background on WDCP: How long in existence. What percent of people archive there. Is it’s use increasing. How does it compare to other data archives in other fields.

(for Jerry: 500 words or less! Well synthesized and paragraphed. Of course, I could just go Google and read up myself…)

By: Michael Jankowski

Michael Jankowski — Wed, 03 Aug 2005 11:39:44 +0000

Intimidation clearly works?

Mann said he’d never be intimidated into releasing his code…so can this really be considered intimidation?

By: David H

David H — Mon, 01 Aug 2005 09:52:52 +0000

Funnily enough for the first time I agree with something Peter said. Intimidation does work. Sometimes rightly and sometimes wrongly. I do not park on yellow lines in front of parking wardens or speed past cameras. I am rightly intimidated and I hope Jo Barton’s actions intimidate a few more.

The wrong sort of intimidation is where powerful lobbies try to stifle open debate. I am certain that there are sceptics in the Met Office and DEFRA who dare not go forcefully against the prevailing view. I felt intimidated last year when Earth First activists tried to shout down peer reviewed experts that dared to contradict the IPCC.

By: Ferdinand Engelbeen

Ferdinand Engelbeen — Mon, 01 Aug 2005 09:38:01 +0000

While the temperature curves from different proxies are either too coarse or not up-to-date to see what happened in the last decades, there are a few which show that the recent decades are not so exceptional warm if one looks at the longer history. Here a few examples:

Tree ring data of North Finland (updated to 2001): cooling trend in the past decades http://www.pages.unibe.ch/products/newsletters/nl2003_2.pdf (page 11-12)

Several stalagmite records:
http://karst.planetresources.net/dating-guilin-1994.htm (South China)http://karst.planetresources.net/holocene_temp_norway.htm (mid-Norway)http://www.caves.org/project/coldwater/climanal.html (Iowa, USA)

By: Greg F

Greg F — Mon, 01 Aug 2005 01:15:05 +0000

On Mangini’s graph, is the ordinate degrees C?

Yes

Does the record go up to about 1930?

It goes to 1935.

By: Murray Duffin

Murray Duffin — Mon, 01 Aug 2005 00:39:20 +0000

On Mangini’s graph, is the ordinate degrees C? Does the record go up to about 1930? Did Mangini sat anything about 1930 to 2005? Murray

By: Ed Snack

Ed Snack — Sun, 31 Jul 2005 21:44:54 +0000

No Peter, you were not following the example of the first two posts. You were repeating the “party line” that Rep Barton was indulging in “intimidation”. It could be a tongue in cheek comment like the others, but your posts so often carry the imputation of improper conduct that I don’t find it easy any more to believe that you don’t simply mean what you say.

By: hans kelp

hans kelp — Sun, 31 Jul 2005 21:25:51 +0000

Dear Peter Hearden, I´m sorry to say so but I have started to think funny things about you. I will ask you to please clear things out for me ( and for anybody else watching this site ) , now tell me honestly and seriously – you absolutely must be Michael Mann in disguise, aren´t you , please!

Your´s sincerely

Hans Kelp

PS: I DO admire scientists. Have a good night!