date: Fri Oct 1 13:22:38 2004 from: Phil Jones subject: Re: Fwd: Your question to: "Richard Thigpen" , ,, , , , , 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" To: , Cc: "Alan Thomas" Subject: Your question Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Disposition: inline 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 ----------------------------------------------------------------------------