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[THREDDS #ULI-448464]: Question about Total Precipitation field name (GFS CONUS 80km)

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  • Subject: [THREDDS #ULI-448464]: Question about Total Precipitation field name (GFS CONUS 80km)
  • Date: Mon, 03 Nov 2014 11:05:47 -0700
Hi Bob:

Generally, the GFS-80km has this pattern of time intervals for total precip:

6.000000 (0.000000,6.000000) = 6.000000
12.000000 (6.000000,12.000000) = 6.000000
18.000000 (12.000000,18.000000) = 6.000000
24.000000 (18.000000,24.000000) = 6.000000
30.000000 (24.000000,30.000000) = 6.000000
36.000000 (30.000000,36.000000) = 6.000000
42.000000 (36.000000,42.000000) = 6.000000
48.000000 (42.000000,48.000000) = 6.000000
54.000000 (48.000000,54.000000) = 6.000000
60.000000 (54.000000,60.000000) = 6.000000
66.000000 (60.000000,66.000000) = 6.000000
72.000000 (66.000000,72.000000) = 6.000000
78.000000 (72.000000,78.000000) = 6.000000
84.000000 (78.000000,84.000000) = 6.000000
90.000000 (84.000000,90.000000) = 6.000000
96.000000 (90.000000,96.000000) = 6.000000
102.000000 (96.000000,102.000000) = 6.000000
108.000000 (102.000000,108.000000) = 6.000000
114.000000 (108.000000,114.000000) = 6.000000
120.000000 (114.000000,120.000000) = 6.000000
126.000000 (120.000000,126.000000) = 6.000000
132.000000 (126.000000,132.000000) = 6.000000
138.000000 (132.000000,138.000000) = 6.000000
144.000000 (138.000000,144.000000) = 6.000000
150.000000 (144.000000,150.000000) = 6.000000
156.000000 (150.000000,156.000000) = 6.000000
162.000000 (156.000000,162.000000) = 6.000000
168.000000 (162.000000,168.000000) = 6.000000
174.000000 (168.000000,174.000000) = 6.000000
180.000000 (174.000000,180.000000) = 6.000000
192.000000 (180.000000,192.000000) = 12.000000
204.000000 (192.000000,204.000000) = 12.000000
216.000000 (204.000000,216.000000) = 12.000000
228.000000 (216.000000,228.000000) = 12.000000
240.000000 (228.000000,240.000000) = 12.000000

The TDS changes the name of the variable to reflect what the time interval 
length is. Since we have mixed 6 and 12 hour intervals, the name of the 
variable is "Total_precipitation_surface_Mixed_intervals_Accumulation".

Im not sure why you might see Total_precipitation_surface_6_Hour_Accumulation, 
except perhaps the file has not finished updating (?), and the 12-hour 
forecasts come in late ?? Could you notify me as soon as you see such a thing?

Also, i was wondering if you realized that the time intervals are mixed (6 and 
12), and if it matters to you?

John





> Hello -
> 
> I was looking at
> http://www.unidata.ucar.edu/georesources/threddsRtModels.xml and I have
> a question about the Total Precipitation field.  It seems that at times
> the most recent GFS 80km CONUS uses a field name of
> 'Total_precipitation_surface_Mixed_intervals_Accumulation', while other
> times, it uses 'Total_precipitation_surface_6_Hour_Accumulation'.
> 
> The majority of the time, it seems like the field is
> 'Total_precipitation_surface_Mixed_intervals_Accumulation'.  Looking
> back at older model runs, this is the field name that is used.  This
> appears to be the only field that changes names (2D or 3D).  Is there a
> reason why this field name changes?  I have a McIDAS-V bundle that tries
> loading in this field, and occasionally it fails when the field name is
> 'Total_precipitation_surface_6_Hour_Accumulation', because my bundle is
> looking for 'Total_precipitation_surface_Mixed_intervals_Accumulation'.
> 
> Thanks -
> Bob
> 
> 

Ticket Details
===================
Ticket ID: ULI-448464
Department: Support THREDDS
Priority: Normal
Status: Open