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Author Topic: GFS changeover and new version  (Read 1515 times)

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Offline administrator

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Re: GFS changeover and new version
« Reply #15 on: June 15, 2019, 10:17:10 AM »
I'm looking at my scripts now. I've found and fixed one problem where there seems to have been an unannounced change to the directory sructure which meant my scripts weren't seeing any data to process.

I now need to wait for a set of data to download to see if it will process. I couldn't see any changes announced to the data structure but having now found the directory structure change I'm a little concerned that there are other changes that I don't know about.
Chris
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Re: GFS changeover and new version
« Reply #16 on: June 15, 2019, 11:14:43 AM »
I found another problem which I think I've fixed. The scripts have run through and indicate a success but I don't have time to check output now. I'll look later but you might be able to tell me if the data looks OK before I get home again.
Chris
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Re: GFS changeover and new version
« Reply #17 on: June 15, 2019, 01:11:38 PM »
Chris I just changed to your data for my 13.00 forecast ans allwent fine, so looks like you nailed it.

Stuart

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Re: GFS changeover and new version
« Reply #18 on: June 15, 2019, 02:46:22 PM »
There may still be something wrong. There are a number of new variables, one being the second APCP variable that Tom mentioned. I think that only the APCP variable is used by WxSim.

Unfortunately the naming convention for the new variables means that my scripts don't currently differentiate between the two variables. I think by accident my scripts are reading the correct variable in each case, but I've had to make some changes to ensure that the correct variable is always selected. I need the next run (12z) to become available to confirm that my mods have worked.

I'll take a look later to see if things are OK.
Chris
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Re: GFS changeover and new version
« Reply #19 on: June 15, 2019, 05:14:09 PM »
My scripts are still broken. An unfortunate variable naming convention in the GFS data means that different hours sometimes have two different variables with exactly the same name. They probably contain the same data but my scripts need to know how how many variables to expect for each hour and when you have two with the same name some hours have more variables than I expect to see. I'll find a way to work around this, but I'm going out with friends tonight so I've run out of time for today.
Chris
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Offline Tom Ehrensperger

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Re: GFS changeover and new version
« Reply #20 on: June 16, 2019, 02:18:31 AM »
Corresponded with Chris on this.  He's hoping to get it fixed tomorrow.  Meanwhile, if you're getting that 'no READY of GFS' message, just switch to Bohler for now.

Tom

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Re: GFS changeover and new version
« Reply #21 on: June 16, 2019, 12:47:36 PM »
Having now looked at the implications of the data changes I've decided I need to change the way I handle the new data. That means more extensive changes, e.g. new database field and mods to multiple scripts. This should make the scripts more future proof which is good, but it will take a little longer to make the changes and test them. Still hoping for a fix today if things go well.
Chris
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Re: GFS changeover and new version
« Reply #22 on: June 16, 2019, 07:56:15 PM »
I've made the changes and I think my data is now good from 12z today (16th June).
Chris
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Re: GFS changeover and new version
« Reply #23 on: June 17, 2019, 05:12:36 PM »
Hello Chris

I tried your data and had _NO_ issues.

I made 2 consecutive forecasts using the McMahon and Bohler data selections in WXSIMATE. The forecasts were in reasonable agreement. The comparison for day3 and 4 dewpoints did start to diverge.

Thanks for all your work,
James B
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Offline JEB_Tucson

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Re: GFS changeover and new version
« Reply #24 on: June 17, 2019, 05:27:12 PM »
Hello Chris

I meant to include the 2 forecast summaries in my last post. So I'm including them here.

Thanks Again,
James
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