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    4/16/2025 1:38 am  #1

    radaroom
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    Registered: 1/02/2020
    Posts: 45

    Reanalysis and the 'Multiple' run process

    In the past I have been able to run 'reanalysis' of a course using the Copernicus downloaded gribs - 20years of runs. Great value. Of course I cant remember how I did it
    Trying to do the same again and can only get 'No Wind at Start' error message and I have tried a variety of options in the Multiple setup box, to no avail.
    I have redownloaded the grib several times to ensure I have the data - about 1.2GB
    Can you demystify the process and setup please?
    Should I start at year 20 (eg race start at 0900 26/12/2005) and then do hourly intervals over 20years?
    Does the start time in Optimal settings have anything to do with this?
    Any advice would be gratefully received

     

    4/16/2025 2:03 pm  #2

    Nick
    Moderator

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    Registered: 9/16/2015
    Posts: 3,299

    Re: Reanalysis and the 'Multiple' run process

    Obviously it doesn't have wind at the start time.

    You could start a single run from the first start time. It may help.

     

    7/02/2025 5:17 am  #3

    greg.brougham
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    Registered: 5/23/2017
    Posts: 31

    Re: Reanalysis and the 'Multiple' run process

    Will did a video that covers the basics a few years ago. Note the optimal setting is not used when doing multiple runs and do use the meteogram functionality to check the wind data as per Nick's comment

    https://www.youtube.com/watch?app=desktop&v=kA8H25VUE_4&t=1089s&ab_channel=WillOxley

     

     

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