From: Phil Jones <p.jones@uea.ac.uk>
To: c.harpham@uea.ac.uk
Subject: FW: Helpdesk query 1489: Hourly data have discontinuities at day joins
Date: Tue Nov 10 16:35:20 2009

    Colin,
      I thought that this didn't happen.
    Cheers
    Phil

     From: C G Kilsby <c.g.kilsby@newcastle.ac.uk>
     To: "p.jones@uea.ac.uk" <p.jones@uea.ac.uk>
     Date: Tue, 10 Nov 2009 15:35:37 +0000
     Subject: FW: Helpdesk query 1489: Hourly data have discontinuities at day
      joins
     Thread-Topic: Helpdesk query 1489: Hourly data have discontinuities at day
      joins
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     Interesting one for you....

     From: Lyndsey Middleton [[4]mailto:lyndsey.middleton@ukcip.org.uk]
     Sent: 10 November 2009 2:43 PM
     To: C G Kilsby
     Subject: Helpdesk query 1489: Hourly data have discontinuities at day joins

     Hi Chris,

     Another Weather Generator query for you. It was raised by Richard Watkins of Manchester
     University (and COPSE project) following a visit from Roger yesterday.

     Can you let me know your response please?

     Cheers,
     Lyndsey

     Long Description=The hourly data from the Weather

     Generator have discontinuities at each

     midnight join. The e.g. temperature

     jumps, may be as high as 9�C. The

     hourly data seem to have been generated

     independently for each day, rather than

     fitting a curve from the maximum of one

     day to the minimum of the next. The

     minimum to maximum curve, i.e. within

     each day, is fine.



     Could the Weather Generator be altered

     to produce more realistic hourly data

     by fitting from Tmax to Tmin the

     following day, please? This would be

     helpful particularly for any use of the

     data for building simulation with plant

     controls.



     Thanks,



     Richard Watkins

     Lyndsey Middleton
     Enquiries Officer

     UK Climate Impacts Programme
     School of Geography and Environment
     OUCE
     South Parks Road
     Oxford OX1 3QY

     [5]www.ukcip.org.uk


     Tel: 01865 285 718 (direct) or 01865 285717 (switchboard)

     My working days are: Tuesday and Wednesday 9am to 5pm and Friday 9 am to 12.30pm




   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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   4. mailto:lyndsey.middleton@ukcip.org.uk
   5. http://www.ukcip.org.uk/

