cc: palmer@lincoln.ac.nz, p.jones@uea.ac.uk
date: Tue, 23 Jul 1996 15:42:54 +1200 (NZST)
from: j.salinger@niwa.cri.nz (Jim Salinger)
subject: Collaboration on N Z Tree Ring work
to: druidrd@lamont.ldgo.columbia.edu, ricardo@ldgo.columbia.edu, drdendro@ldgo.columbia.edu

Dear Rosanne

Jonathon has shared your message of collaboration.  We would be delighted
to collaborate with you, Ricardo and Ed  on tree-ring work in this part of
the world.  As you will be aware from e-mails between yourselves, Phil
Jones and us, we have been pushing forward in producing new chronologies
and clean climatological time series.

We think the co-operative and collaborative way is an excellent wayto make
progress.  By this, we mean true collaboration, where information is
shared, data processing together, and joint publications making the
approach a partnership.  By this means, we can add all our own specialised
input into the process, and produce a better result!

We would welcome collaboration  as outlined above - would you please
confirm whether you would be comfortable with working in this way.

Now - over the past few years Jonathon, his Ph D student and myself have
produced a series of new chronologies which we have matched with climate
data.  We have been quite selective in the sites for either extension of
old chronologies, or new ones, simply because of the climatic complexity of
the country.  We have gone for sites which maximise the climatic gradients
- whether these are westerly/easterly differences for pressure gradients,
or temperature signals.  You will have some appreciation of this from your
Stewart Island work, and Ricardo will recognise this from his familiarity
with Argentina.  I have also been quite selective in the appropriate
climate data for use with these series.  These have been screened and
homogenised.

This year I will be working on collection of older MSLP data from the area
(including most of the South Pacific) and homogenising it.  Some of the NZ
MSLP data pre 1930 is very poor, and requires refining dramatically.  We
would favour an approach where Jonathon can give the input on tree-ring
data and I can give the input and provide the climate data, and we all be
involved with the results, as appropriate.  Jonathon and I are both aware
of the bugs in the data, and the complexities of the New Zealand situation.

A copy of the appropriate parts of your NSF proposal would be most useful,
which we could give you constructive comments, if necessary, to strengthen
it.  We would be more than happy to be named collaborators on the proposal.


Please let us know whether this is acceptable with you.

Warm wishes and please say hello to Ed.

Jim  Salinger



PS Jonathon will also be sending you a response.

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Dr Jim Salinger                Tel:   (+64 9) 375 2090 (office reception)
NIWA,                              Tel:   (+64 9) 375 2053 (direct dial)
269 Khyber Pass Road      Fax: (+64 9)  375 2051
Newmarket, Auckland       E-mail:  j.salinger@niwa.cri.nz

Postal Address:       P. O. Box 109 - 695
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                               Auckland, New Zealand

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