Hi Debbie, Did you do an atmospheric correction for C13? Do you have an
empirical equation? thank you Val Barber

>...you might also want to look at:
>
>Hemming, D.L., Switsur, V.R., Waterhouse, J.S., Heaton, T.H.E. and Carter,
>A.H.C.  1988.  Climate variation and the stable carbon isotope composition
>of tree ring cellulose: an intercomparison of Q. robur, F. sylvatica and
>P. sylvestris.  TELLUS 50B, 25-33.
>
>let me know if you need to data
>Debbie.
>
>^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>^   Debbie Hemming                              Tel: ++44 (0)1223 334881  ^
>^   Godwin Institute for Quaternary Research    Fax: ++44 (0)1223 334871  ^
>^   Department of Plant Sciences                                          ^
>^   University of Cambridge                                               ^
>^   Free School Lane                                                      ^
>^   Cambridge                                                             ^
>^   United Kingdom                                                        ^
>^   CB2 3RS                                   E-mail:[log in to unmask]  ^
>^                                                                         ^
>^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^


Valerie Barber
Institute of Marine Science
O'Neill 200
University of Alaska Fairbanks
Fairbanks, AK 99775
work phone (907) 474-7899
fax (907) 474-7204