From: William M Connolley <wmc@bas.ac.uk>
To: Caspar Ammann <ammann@ucar.edu>
Subject: Re: not so fast - an update
Date: Thu, 4 Jan 2007 20:41:11 +0000 (GMT)
Cc: Phil Jones <p.jones@uea.ac.uk>, Tom Crowley <tcrowley@duke.edu>, "Michael E. Mann" <mann@psu.edu>, "raymond s. bradley" <rbradley@geo.umass.edu>, Stefan Rahmstorf <rahmstorf@ozean-klima.de>, Eric Steig <steig@ess.washington.edu>, gschmidt@giss.nasa.gov, rasmus.benestad@physics.org, garidel@marine.rutgers.edu, David Archer <d-archer@uchicago.edu>, "Raymond P." <rtp1@geosci.uchicago.edu>

On Thu, 4 Jan 2007, Caspar Ammann wrote:
> check figure A9, there the 17th century is cold, and this is probably
> the curve that was used. In that case, then its Central England from Lamb.

Ah, you mean A9(d) (I thought you meant A9(a) for a bit). Yes, that looks pretty
similar to IPCC 1990. Though not identical - the scaling is different, but the
timing is similar.

-W.

> Caspar
>
>
> William M Connolley wrote:
> > On Thu, 4 Jan 2007, Phil Jones wrote:
> >
> >>      The net is closing...
> >>
> >> National Research Council, US Committee for the Global Atmospheric
> >> Research Program, Understanding Climatic Change: A Program for Action,
> >> National Academy of Sciences, Washington, DC, (1975), appendix A.
> >>
> >>   This book (Fig A2b) has the same figure as Imbrie/Imbrie. It is rotated.
> >>   It also has the same concept of the IPCC 1990 Figure, changes on
> >>   various timescales - all rotated. Loads of Lamb diagrams I have
> >>   seen countless times before.
> >>
> >
> > ? The source for IPCC can't be the 1975 NAS report. That fig is relatively warm
> > about 1600; the IPCC '90 figure is cold then. And as noted the "MWP" is colder
> > than 1950. But NAS 75 is the same as I+I, true (they both source to Lamb 69).
> >
> > Incidentally my I+I says copyright 1979, seventh printing 1998.
> >
> > -W.
> >
> > William M Connolley | wmc@bas.ac.uk | http://www.antarctica.ac.uk/met/wmc/
> > Climate Modeller, British Antarctic Survey | (01223) 221479
> >
> > --
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> >
> >
>
> --
> Caspar M. Ammann
> National Center for Atmospheric Research
> Climate and Global Dynamics Division - Paleoclimatology
> 1850 Table Mesa Drive
> Boulder, CO 80307-3000
> email: ammann@ucar.edu    tel: 303-497-1705     fax: 303-497-1348
>

William M Connolley | wmc@bas.ac.uk | http://www.antarctica.ac.uk/met/wmc/
Climate Modeller, British Antarctic Survey | (01223) 221479

--  
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