Sunday, June 3, 2012


date: Fri, 27 Jul 2001 09:11:47 +0100
from: Phil Jones <>
subject: Re: Proposed Sessions for IUGG Sapporo, 2003
to: Mike MacCracken <>, "Michael E. Mann" <>, Mike MacCracken <>


Dear All,
I'd be happy to be involved in the two sessions you have me down for
at the next IUGG
(IAMAS). Following on from Mikes (Mann) email and Mikes (Mac) response
it would be useful
to alter the wording of the first to encourage people to come who are
working on longer
timescale Holocene variations (partly those with less well-resolved
proxies) and those
working on high-frequency proxies (principally for the last couple of
thousand years). We need
to get both but will need to separate into well-defined sessions.
An additional thought would be to combine the two 'Holocene' sessions
into a longer
session of 4-5 days, looking at the evidence/results in the first part
and the causes/understanding
in the second half.
I'll leave this up to you, Mike (Mac).

For the land cover I suggest you contact Navin Ramankutty
Navin has developed a land-use dataset since 1700 on a fine grid basis.
There is a paper
in Glob. Biogeochem. Cycles. 13 (1999) 997-1027. Also Richard Betts at
the Hadley Centre
( should be running the HC model with this
land-use forcing
history in the near future. So, there is a land-use dataset available at
least since 1700, but
I would have thought it would be difficult to get anything as detailed
for earlier times.

Other sessions all seem good ideas.


At 12:43 26/07/01 -0400, Mike MacCracken wrote:
>Good ideas, with one caveat. A problem we have had is that we tend to get
>sessions overlapping on topic, etc. and then on time--so what I was hoping
>was we could have one symposium on the Holocene and then the conveners can
>break up the days into early and late or whatever else makes sense--but if
>we get topics too fine-scale, then we get problems developing--some might
>not get papers, etc.--together, the effort can be coordinated better, it
>seems to me.
>At 11:49 AM -0400 7/26/01, Michael E. Mann wrote:
> >Dear Mike,
> >
> >Thanks--I think the timing would be good, w/ the next IPCC perhaps only
> >beginning to gear up (depending on whether or not the FAR is even in '2005
> >which I guess hasn't yet been decided?).
> >
> >I'd be happy to convene a session on the Holocene w/ any combination of the
> >others (Phil, Keith, Ray) you mentioned, but it might be worthwhile to
> >consider having both a "Holocene A" and "Holocene B" session divided
> >roughly into early/mid Holocene and late Holocene respectively. For the
> >former, it might be useful to involve others like Jean Jouzel or Sandy
> >Tudhope who are interested in things like the 8.2 and 4.2 kyr BP events and
> >changes from early to mid-Holocene in ENSO variability, and can better
> >address those themes, while others of us might be better suited to
> >convening a "late Holocene" session that would revisit many of the issues
> >that came up in the Charlottesville Workshop last spring (an Eos meeting
> >report should be out at some point hopefully!). It might be useful to
> >involve Jonathan Overpeck here as well, which would help coordinate (both
> >in terms of scheduling, but also in terms of themes) what we're trying to
> >accomplish w/ international PAGES/CLIVAR (Peck is the chair of this).
> >
> >I'll be interested to hear what the others think too.
> >
> >Cheers,
> >
> >mike
> >
> >If we do go through w/ this session, it will be important for those of us
> >
> >At 11:19 AM 7/26/01 -0400, you wrote:
> >>Two more things--please suggest any possible other people who might be
> >>willing to serve as conveners.
> >>
> >>And, of course, I do need responses at this point by this Friday.
> >>
> >>Thanks, Mike
> >
> >_______________________________________________________________________
> > Professor Michael E. Mann
> > Department of Environmental Sciences, Clark Hall
> > University of Virginia
> > Charlottesville, VA 22903
> >_______________________________________________________________________
> >e-mail: Phone: (804) 924-7770 FAX: (804) 982-2137
> >

Prof. Phil Jones
Climatic Research Unit Telephone +44 (0) 1603 592090
School of Environmental Sciences Fax +44 (0) 1603 507784
University of East Anglia
Norwich Email


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