Friday, May 11, 2012

4167.txt

cc: "Matilde Rusticucci" <matiatXYZxyzfcen.uba.ar>
date: Wed Jul 13 14:39:07 2005
from: Phil Jones <p.jonesatXYZxyz.ac.uk>
subject: Re: Figure 3.7.5
to: mati@at.fcen.uba.ar, "Kevin Trenberth" <trenbertatXYZxyzr.edu>

Matilde,
Thanks. I have printed the paper off and will read along with one by Botta et al.
in GRL from 2002.
Just some text seems fine.
Cheers
Phil
At 13:58 13/07/2005, Matilde Rusticucci wrote:

Kevin, Phil
> Ok all let me try to clear this up a bit.
> 1) The Figure from Marengo is amongst those in the Figure file on the
> ftp site. At present it is not included in the text, although the
> result is discussed. Is this adequate or should we include this figure?
I think that this is adequate. No figure but results discussed in the text.
> 2) The figure is spectacular but concern has been expressed about whther
> it is real: it it fully believable? Is it reproducible with other
> data? If there are any questions about this then there is more reason
> to not include it.
In the same paper, Marengo compares the calculated indices with NCEP, CMAP
GHCN and CRU data. Because the figure caption has some errors,
it�s a little difficult to follow, but he says in the text that his
data-based indices and CRU are positively and significantly correlated.
No relation seems to be with NCEP, (19291999).
In particular:
"In northern Amazonia, the NAR index shows a negative trend while NCEP
rainfall and the CMAP datasets show a positive trend. (194899)
In southern Amazonia,rainfall from gauge observation and from the
gridded datasets CRU, CMAP and the NCEP
rainfall show a positive trend also significant at
5% level. "
IN MY UNDERSTANDING THIS DOES NOT MEAN THAT STATION DATA ARE INCORRECT
but the others could be...
> 3) There was also the desire that if we did include it, could it be
> updated? The answer seems to be no.
>
The answer is NO
> If that is the case then we are back to should we include it or not?
> Matilde I thought you had views about the credibility of the figure?
> Kevin
>
I hope I have explained it clearly for you, is it done now?
(if not, we can try in Spanish ...)
cheers,
Matilde

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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