date: Fri Mar 28 12:49:53 2003
from: Tim Osborn <t.osborn@uea.ac.uk>
subject: Re: Borehole temperatures
to: "Henry N. Pollack" <hpollack@umich.edu>

Dear Henry,

many thanks for your help with parameter values of rock properties etc. while I was visiting Simon Tett at the Hadley Centre earlier this week.  We took deep (4 m) soil temperatures from their model simulation under volcanic and solar forcings, and diffused them down using a 1D diffusion model.  With little overall warming trend in this simulation, they obviously don't agree with the observed "transient profile", so not much point in circulating our results just yet.  But when the simulation with anthropogenic forcings too is completed in the next couple of months, we should get some interesting results.

Best wishes

Tim