I wrote again on Apr 17, 2007 on my FOI request observing that part (B) of my FOI request had not been answered: the identification of the stations used as comparanda in the calculations of Jones et al 1990.
Thank you for your courtesy and attention in this matter, which has successfully resolved part (A) of my request. However part (B) remains outstanding and I re-iterate my previous request for this information:
A) the identification of the stations … for the following three Jones et al 1990 networks:
1. the west Russian network
2. the Chinese network
3. the Australian network
B) identification … of the stations used in the gridded network which was used as a comparandum in this study
Thank you for your attention.
Regards, Steve McIntyre
I received the following reply:
In your email of 17 April 2007, you re-iterated your request from your email of 12 March 2007, to see
“B) identification … of the stations used in the gridded network which was used as a comparandum in this study”
I have been in conversation with Dr. Jones and have been advised that, in fact, we are unable to answer (B) as we do not have a copy of the station data as we had it in 1990. The station database has evolved since that time and CRU was not able to keep versions of it as stations were added, amended and deleted. This was a consequence of a lack of data storage comparable to what we have at our disposal currently.
I have been advised that the best equivalent data available is within the current version of CRUTEM3(v) or CRUTEM2(v). The latter is still available on the CRU web site, though not updated beyond 2005.
These latest versions are likely different from what was used in 1990. Australia and China have both released more data since then – it is likely that much of this was not digitized in 1990. Dr. Jones acknowledges that the grid resolution is now different, but this is again due to greater disk storage available.
The details of our updating of the raw station data is discussed in the following article:
Jones, P.D. and Moberg, A., 2003: Hemispheric and large-scale surface air temperature variations: An extensive revision and an update to 2001. J. Climate 16, 206-223.
This is, in effect, our final attempt to resolve this matter informally. If this response is not to your satisfaction, I will initiate the second stage of our internal complaint process and will advise you of progress and outcome as appropriate. For your information, the complaint process is within our Code of Practice and can be found at:
Information Policy Officer
University of East Anglia