date: Fri Oct  1 13:22:38 2004
from: Phil Jones <p.jones@uea.ac.uk>
subject: Re: Fwd: Your question
to: "Richard Thigpen" <RThigpen@wmo.int>, <src@bas.ac.uk>,<Howard.Diamond@noaa.gov>, <Thomas.c.Peterson@noaa.gov>, <alsuther@nsf.gov>, <blettau@nsf.gov>, <mattl@ssec.wisc.edu>, <kathy.hill@usap.gov>

    Dear All,
        Thanks for all the replies. Apologies for only a short reply. The issues will be
   briefly
    addressed on Oct 6 when the AGG of AOPC have a conference call. Dick and I will
    try and sort out the issue when we meet Oct 10-12. We'll try and cover all the issues.
        All this will hopefully sort out the AWSs you run. It is up to Howard though for the
    manned stations through NOAA.  As long as as much data as possible gets into the
    READER archives, we can come up with a consistent method. The paper on the READER
    project is now out in J. Climate and an up-to-date summary of Antarctic trends will appear
    in the next few months in IJC.
       I will alert as many people/groups as I can of the issues. Antarctica will end up as
   the
    continent with most of its data readily available !
    Cheers
    Phil
    Cheers
    Phil

   At 07:04 28/09/2004, Richard Thigpen wrote:

     The e-mail system said some of these did not go.
     Second try.
     RKT
     Richard K. Thigpen
     GCOS Secretariat
     301-598-5683
     301-452-7669
     41 22 730-8012 (in Geneva)
     thigpenr@erols.com
     RThigpen@wmo.intDate: Tue, 28 Sep 2004 07:54:11 +0200
     From: "Richard Thigpen" <RThigpen@wmo.int>
     To: <Matthew_Lazzara_<mattl@ssec.wisc.edu>,
             <Phil_Jones_<p.jones@uea.ac.uk>
     Cc: "Alan Thomas" <AThomas@wmo.int>
     Subject: Your question
     Mime-Version: 1.0
     Content-Type: text/plain; charset=US-ASCII
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     Dear Matt, et al
     I am far from being an expert but I did a bit of checking yesterday as
     you requested. I spoke with the staff of the WCP and the WWW as well.
     The actual format for the CLIMAT is described in 306 manual on Codes
     (1995)
     Vol lI.1 Part A Section FM-71-X
     I suspect you have it in your library, or should, but I can send that
     section if there are any doubts.  As far as I know the software produces
     the correct format.
      Then the Guide to Meteorological Practices
     WMO No. 100   (1983)
     Section 8.2.1 describes the computation of mean pressure and
     temperature (same method) The average of the 24 direct observations with
     a note that the mean of 4 equally spaced observations may suffice.
     I just received my copy on a new handbook prepared by the [1]WWW. It is:
     Handbook on CLIMAT and CLIMAT TEMP reporting
     WMO/TD No. 1188   (2004)
     Section 1.5.2.6.3
     It indicates the mean monthly temperature is the mean of the daily
     means, and the daily means are derived from either 4 (synoptic) or 8
     (synoptic plus intermediate times) observations.
     I am not sure how to get you a copy of this later handbook yet as it is
     just being completed.  I will find out and let you know.
     In November the WWW will conduct a workshop in Moscow based on this new
     handbook and the CLIREP spftware.  This is the first of such workshops
     and is held in Moscow because the authors of both the handbook and
     CLIREP are Russian.
     Cheers
     Dick
     Richard K. Thigpen
     GCOS Secretariat
     301-598-5683
     301-452-7669
     41 22 730-8012 (in Geneva)
     thigpenr@erols.com
     RThigpen@wmo.int

   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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