Sunday, June 17, 2012

5235.txt

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