Friday, April 27, 2012

3562.txt

date: Fri Mar 11 17:03:22 2005
from: Phil Jones <p.jonesatXYZxyz.ac.uk>
subject: RE: revision of Chapter 3 review
to: "Sinha, Parikhit" <PSinhaatXYZxyz.edu>, "Dennis Hartmann" <dennis@atmos.washington.edu>, "Ken Kunkel" <kkunkel@uiuc.edu>

Ricky, Ken and Dennis,
I've modified the text in the Ch 3 document. The main revision is the following
to the bit you were having troubles with.
There is an issue related to land-use/land-cover (LULC) changes that could be addressed
here or maybe elsewhere in other chapters. This is that in the modeling discussion (in
Chapters 1, 5 and 6) LULC is considered to be a forcing that is incorporated in some models
and not incorporated in others as the forcing and its history are uncertain. We think this
is correct and LULC should be considered as a forcing. . Any LULC effects in observational
datasets should therefore be left in and not commented upon as a problem in Chapter 6.
Chapter 6 cant have it both ways the data are affected by it, so they are somehow wrong,
yet it is omitted from many models.
I have made a few other small changes to Ch 3 and also to the CH 5 comments, so
I'm reattaching them.
I have no real comments of substance on Dennis' review of the Executive Summary.
It is fair and lucid. I reckon they may lead to more dissent due to having to refer to
Fu et al in a much more balanced way, but they have to do this. I know Tom Wigley
will be happy to do this, but I suspect some of the other chapter leads will have
reservations.
I've got the conference call in my diary. Can you check that I can call in without
getting charged? Can international callers get in?
Finally, how are the other chapter reviews coming along?
Have a good weekend.
Cheers
Phil
At 15:26 09/03/2005, Sinha, Parikhit wrote:

Hi Ken, Phil, Dennis. Below is some text from the second page of the
chapter 3 comments. I don't quite understand the last three sentences.
Can you suggest a rewording? Thanks.
Ricky

"There is an issue related to land-use/land-cover (LULC) changes that
could be addressed here or maybe elsewhere in other chapters. This is
that in the modeling discussion (in Chapters 5 and 6) LULC is considered
to be a forcing that is in some models and not incorporated in others as
the forcing and its history are uncertain. If it is a forcing (and we
think it is), then we should not be worrying that it influences the
surface or tropospheric temperature record. If it is a forcing then it
needs to be in the data in the order that it might be found. You can't
have it both ways - the data are affected by it, so they are somehow
wrong, yet it is omitted from many models."

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 p.jonesatXYZxyz.ac.uk
NR4 7TJ
UK
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