Tuesday, December 20, 2011


From: "Michael E. Mann" <mann@meteo.psu.edu>
To: Tim Osborn <t.osborn@uea.ac.uk>
Subject: Re: Fwd: Re: Ruherford et al 2005
Date: Wed, 26 Apr 2006 10:49:23 -0400
Reply-to: mann@psu.edu
Cc: Scott Rutherford <srutherford@rwu.edu>, Keith Briffa <k.briffa@uea.ac.uk>, Phil Jones <p.jones@uea.ac.uk>

thanks Tim,

I'm saddened to hear that this bozo is bothering you too, in addition to
NCAR, NSF, NAS, IPCC and everyone else. Rest assured that I won't ever
respond to McIntyre should he ever contact me, but I will forward you
any email he sends related to this. I assume Scott feels the same way...

I hope you're having as nice a spring as we are here. See you in June?


p.s. we have some interesting new reconstructionbased on RegEM using a
greatly expanded multiproxy network (which includes the MXD data). I
hope to send you guys shortly. It is our hope that you'll consider being
co-authors. This to come soon...

Tim Osborn wrote:

> Hi Scott and Mike,
> as lead author and co-author on the Rutherford et al. paper, I thought
> I'd let you know that we are dealing with some requests for the MXD
> data set used in this paper, including the one copied below from
> McIntyre. We should have got this organised a bit quicker but we will
> (eventually!) get the data and its description available for
> interested parties. So if you get any more requests for the MXD data
> that were used in our joint paper, please pass them on to me.
> Hope everything's well with you,
> Tim
>> Date: Wed, 26 Apr 2006 15:08:39 +0100
>> To: "Steve McIntyre" <stephen.mcintyre@utoronto.ca>
>> From: Tim Osborn <t.osborn@uea.ac.uk>
>> Subject: Re: Ruherford et al 2005
>> Cc: "Andrew Weaver" <jclim@uvic.ca>, Keith Briffa <k.briffa@uea.ac.uk>
>> Dear Steve,
>> I have just finished responding to Science about your latest request
>> to them concerning our recent paper, so I can now turn to your
>> request copied below.
>> I can answer your first request immediately:
>> The MXD data used in Rutherford et al. were *derived* from the
>> Schweingruber network, but aren't actually the raw site-by-site data
>> values. The reason why we didn't use the latter is that the
>> site-by-site MXD chronologies have only been processed using a
>> "traditional" approach to standardization that removes low-frequency
>> climate variations. Our age-band decomposition approach (Briffa et
>> al., 2001, JGR), which retains more low-frequency variability, had
>> only been applied at the regional-average level. So we gridded the
>> site-by-site chronologies onto a 5x5 grid and added to each grid box
>> the "missing" regional-scale low-frequency information identified by
>> comparing the age-band and traditionally-standardized results at a
>> regional scale.
>> I will respond with information and/or data to your requests (2)-(4)
>> soon.
>> Regards
>> Tim
>> At 19:37 18/04/2006, Steve McIntyre wrote:
>>> Dear Tim, I presume that the sites used in the MXD network in
>>> Rutherford et al., Journal of Climate 2005 came from the
>>> SChweingruber network. Could you provide me with (1) confirmation as
>>> to whether this is the case; (2) identification of the sites; (3)
>>> the protocol for site selection from the larger Schweingruber
>>> network; (4) a URL for any data or dataversions not available in the
>>> Schweingruber network at WDCP. Regards, Steve McIntyre
> Dr Timothy J Osborn
> Climatic Research Unit
> School of Environmental Sciences, University of East Anglia
> Norwich NR4 7TJ, UK
> e-mail: t.osborn@uea.ac.uk
> phone: +44 1603 592089
> fax: +44 1603 507784
> web: http://www.cru.uea.ac.uk/~timo/
> sunclock: http://www.cru.uea.ac.uk/~timo/sunclock.htm

Michael E. Mann
Associate Professor
Director, Earth System Science Center (ESSC)

Department of Meteorology Phone: (814) 863-4075
503 Walker Building FAX: (814) 865-3663
The Pennsylvania State University email: mann@psu.edu
University Park, PA 16802-5013



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