date: Mon, 10 Nov 2008 16:42:12 +0000
from: Keith Briffa <k.briffa@uea.ac.uk>
subject: Re: FW: FOI_08-50 ; EIR_08-01
to: Tim Osborn <t.osborn@uea.ac.uk>

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thanks Tim
I think we should tell Dave that in this case we are very busy and 
need time to look at questions and consider - then say we will 
provide answer later
- what do you think?
Keith

At 16:27 10/11/2008, you wrote:
>Keith and Phil,
>
>I've had 2 minutes to look at this.  Initial responses are below.  I 
>haven't cc'd this to Dave Palmer, in case you want to think about it further.
>
>Tim
>
>>
>>----------
>>From: Steve McIntyre [mailto:stephen.mcintyre@utoronto.ca]
>>Sent: Friday, October 31, 2008 6:40 PM
>>To: Palmer Dave Mr (LIB)
>>Subject: FOI_08-50 ; EIR_08-01
>>
>>Dear Mr Palmer,
>>
>>This is to note that much of the information requested in FOI 
>>request (FOI_08-50 ; EIR_08-01) has been posted at 
>><http://www.cru.uea.ac.uk/~timo/datapages/mxdtrw.htm>http://www.cru.uea.ac.uk/~timo/datapages/mxdtrw.htm 
>>.  I've now had an opportunity to examine this data and request the 
>>following clarification to the information that you provided.
>>
>>1) Many Schweingruber series ( see listing at 
>><http://www.ncdc.noaa.gov/paleo/treering-wsl-data.htm>http://www.ncdc.noaa.gov/paleo/treering-wsl-data.htm) 
>>within one of the gridboxes listed at the webpage ("Rutherford 
>>gridbox") (about 109) are excluded from the 341 sites sent to 
>>Rutherford - an example is the series athapcen.  What was the basis 
>>for excluding this and the other excluded series?  Please provide 
>>any manuals, computer code or correspondence explaining the exclusion.
>
>The website already provides this information, he should read it 
>more carefully.
>
>>  2) A few (3) series are included in the Rutherford roster even 
>> though they are not within the 4 corners of a Rutherford gridbox 
>> (irempisy kuba4lag kuba2lag ).   What was the basis for including 
>> these series?  Please provide any manuals, computer code, 
>> documents or correspondence explaining the inclusion.
>
>I don't understand the question.
>
>>  3) I examined Gridbox 7(132.5E 72.5N) in more detail. It contains 
>> one series: omoloyla.  The gridded series (#7) has values from 
>> 1400-1991, but the underlying omoloyla chronology at ITRDB only 
>> goes from 1496 to 1991 and the underlying measurement data for 
>> omoloyla at ITRDB only has values for the period 
>> 1496-1991.     Please provide any manuals, computer code, 
>> documents or correspondence explaining how the values from 
>> 1400-1495 were obtained.  If a different omoloyla data set was 
>> used for this study than the data set at ITRDB,  would you please 
>> advise and provide the data actually used in this study.  If there 
>> are similar discrepancies for other sites, would you please 
>> provide a listing of sites for which the version used differs from 
>> the ITRDB version.
>
>I generated estimates of data in some boxes by a multiple regression 
>model using surrounding gridded MXD data, if it were possible to 
>extend some shorter grid-box records in this way.  We cannot just 
>give this short answer, since he will then just ask for the 
>details.  I should, therefore, attempt to find the details if we 
>reply to this question.
>
>>  4). A few series have incorrect codes (adybogla       balyebla 
>> leshpcob    vanc)  compared to the Shweingruber codes. Does this 
>> affect the operation of any computer programs?
>
>No
>
>>
>>5) Not all series listed at the Osborn webpage are in the ITRDB 
>>data set. Some examples are:
>>
>>           id                      name type  long   lat start  end
>>327 gartogfi                    Gartog PCBA 98.52 29.67  1709 1993
>>328  haizefi                Haize Shan PCBA 99.50 30.30  1777 1993
>>329  lhamafi                  Lhamcoka PCBA 99.12 31.82  1784 1994
>>330  lhambfi                  Lhamcoka PCBA 99.13 31.80  1669 1994
>>331  lhamcfi                  Lhamcoka PCBA 99.10 31.82  1768 1994
>>332  lhamdfi                  Lhamcoka PCBA 99.10 31.82  1630 1994
>>333  qamdofi                     Qamdo PCBA 96.95 31.08  1406 1994
>>334  riwofi1                    Riwoqe PCBA 96.48 31.23  1709 1994
>>335  riwofi2                    Riwoqe PCBA 96.48 31.30  1673 1994
>>Can you please provide this data.
>
>I think all the Schweingruber chronologies are on the SO&P website 
>anyway; originally this was password-protected, but that protection 
>was probably removed after the end of the SO&P project, so we could 
>just direct him there.
>
>>  6) The Tornetrask id  tornxx   does not match the corresponding 
>> Schweingruber ids, where there are 3 ids for this site.  Can you 
>> please provide the data set with id tornxx as used in the gridding study.
>
>I think that this too will be on the SO&P website, as part of the 
>file containing the MXD chronologies.  But I'm not 100% sure and 
>have no time to look to find this out.
>
>Tim
>
>
>
>Dr Timothy J Osborn, Academic Fellow
>Climatic Research Unit
>School of Environmental Sciences
>University of East Anglia
>Norwich  NR4 7TJ, UK
>
>e-mail:   t.osborn@uea.ac.uk
>phone:    +44 1603 592089
>fax:      +44 1603 507784
>web:      http://www.cru.uea.ac.uk/~timo/
>sunclock: http://www.cru.uea.ac.uk/~timo/sunclock.htm
>

--
Professor Keith Briffa,
Climatic Research Unit
University of East Anglia
Norwich, NR4 7TJ, U.K.

Phone: +44-1603-593909
Fax: +44-1603-507784

http://www.cru.uea.ac.uk/cru/people/briffa/ 

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