date: Thu, 04 Sep 2003 08:27:02 -0600
from: Caspar Ammann <ammann@ucar.edu>
subject: Re: AGU session submission
to: Tim Osborn <t.osborn@uea.ac.uk>

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Tim,
it seems to work now. Give it a shot.
Caspar


Tim Osborn wrote:

> Dear Caspar,
>
> I have been trying for the past few hours to submit an abstract to the 
> session that you're convening at the AGU Fall meeting.  I've not 
> managed to complete the process because their system is currently 
> failing at the preview stage.  It says to try again, which I will do, 
> but because the official deadline is about to pass, I thought I'd 
> email you my abstract just so that you know it is on the way (assuming 
> the deadline is extended past when the system is fixed!).
>
> Best regards
>
> Tim
>
> ---------------------------------------------------
> Simulated and Observed Climate Signals in Borehole Temperature Profiles
>
> Tim Osborn
> Keith Briffa
>
> Climatic Research Unit, School of Environmental Sciences, University 
> of East Anglia, Norwich  NR4 7TJ, UK
>
> Simon Tett
>
> Hadley Centre - Reading, Meteorology Building, University of Reading, 
> Reading, Berkshire  RG6 6BB, UK
>
>
> Forward simulation of borehole temperature profiles are presented, 
> using ground (soil) temperature variations simulated by the HadCM3 
> climate model forced by natural and anthropogenic factors from AD 1500 
> to 2000.  Differences between soil temperature and air temperature 
> variations are assessed, in terms of the driving influence of snow 
> cover and vegetation cover changes, and in terms of their impact on 
> the simulated borehole temperature profiles.  The simulated profiles 
> are then compared with observed temperature profile anomalies.
>
> The sensitivity of air temperature reconstructions to method of 
> gridding the individual borehole records and to the profile sampling 
> date will be demonstrated by analysis of the climate signal in the 
> observed temperature profile data set.  Comparison of the spatial 
> signature of twentieth century borehole-derived trends with 
> instrumental air temperature trends is used to assess confidence in 
> the climate signal recoverable from the borehole data set.
> -----------------------------------------------
>
>
> 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
>
>
>

-- 
Caspar M. Ammann
National Center for Atmospheric Research
Climate and Global Dynamics Division - Paleoclimatology
Advanced Study Program 
1850 Table Mesa Drive
Boulder, CO 80307-3000
email: ammann@ucar.edu    tel: 303-497-1705     fax: 303-497-1348


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