cc: john.kennedy@metoffice.gov.uk, Philip Brohan <philip.brohan@metoffice.gov.uk>
date: Wed Mar  2 16:42:00 2005
from: Phil Jones <p.jones@uea.ac.uk>
subject: Re: Query
to: Ian Harris <i.harris@uea.ac.uk>, Peter Thorne <peterwthorne@btinternet.com>

    Dear All,
         I'll elaborate on Harry's email a little and then make a suggestion. The deleted
    stations were mainly duplicate ones, or ones with very little data (but had normals
    from the WMO source). The changed stations may have had from 1 to N changes.
        You don't yet have these files (Philip may have) and need the appropriate normals
    and SD files. So, I hope you've not mixed any files sent by Harry - as you'll need
    a full new set.
        I don't think this is the reason, by the way. Far more likely is that the month
    you're now doing is January - a new year. This always gave me problems as the
    Anders file has to be expanded to have one more year for each station. I also needed
    to expand some arrays to read in one more year. As Harry says we've not altered anything
   in NZ.
    The fact that the error manifest itself in NZ may be irrelevant and it is just masking
   where
    it really occurred.
       Hope you find it !  Peter will be back with you on Friday !
    Cheers
    Phil
   At 13:34 02/03/2005, Ian Harris wrote:

     On 2 Mar 2005, at 13:15, Peter Thorne wrote:

     Phil, Philip, Harry, John,

     do you know of any changes made to a NZ station(s) in the last month? I'll try to
     investigate further upon my return on Friday, but it looks like this can't be dismissed
     as a simple bug in the system. I doubt a change at UEA would have led to this problem
     unless it had been deliberately propogated to the Met Office archive which is
     conceivable. I have no info as to the relative magnitude of the change.

     No changes to NZ data from my end, Peter. Here's a map showing the stations I've
     'affected' ;-)
     [1]http://www.cru.uea.ac.uk/~harry/for_philip_b/changedstationstorev10.pdf
     Keep me posted!
     Harry


     Thanks

     Peter
     Note: forwarded message attached.
     From: "Hardwick, Jen" <jen.hardwick@metoffice.gov.uk>
     Date: 2 March 2005 08:49:34 GMT
     To: Peter Thorne <peterwthorne@btinternet.com>
     Subject: HadCRUTtttttttttttttttttewwwe ew
     HadCRUT fails at test 3# from the test_landsstmerge program, after the
     negrhadcrut2 script.
     "Test 3 failed, values before the current month are too dissimilar.
     Check random years Either SST or land in error for hadcrut2
     The proportion of values changed before the current month is:  0.0063"
     The criteria are 0.001 for a normal run through and 0.005 if Phil
     updates the anders file. Looking at the data there are a number of
     differences for the previous month and subsequent months.
     This is interesting because the land values have not changed and the SST
     values have not changes.
     Looking more closely at the 'dodgy' file you can see that the change in
     values, for almost all years back to 1856, are localised to the lat,
     long  grid box areas (27, 66+). This is around New Zealand.
     I'm baffled. Not an unusual turn of events there!
     Don't worry too hard about it,
     Happy day
     Jen
     --
     Jen Hardwick,  Climate Information Scientist
     Met Office   Hadley Centre for Climate Prediction and Research
     Tel: +44 (0)1392 884288    Fax: +44 (0)1392 885681
     Email: jen.hardwick@metoffice.gov.uk  [2]http://www.metoffice.gov.uk
     Global climate data sets are available from [3]http://www.hadobs.org

     Ian "Harry" Harris
     Climatic Research Unit
     University of East Anglia
     Norwich NR4 7TJ
     United Kingdom

   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.jones@uea.ac.uk
   NR4 7TJ
   UK
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