[ncl-talk] ncl_filedump question

[Jim Means]

Thank you Dennis.  Unfortunately, I still just get the error message, so 
apparently it's something peculiar to my machine.  I wonder if there 
could possibly be something wrong in the way I've configured NCL?

I could update to the latest version of NCL.

Jim


On 07/19/2018 06:53 PM, Dennis Shea wrote:
> Jim
>
> NCL 6.3.0 handles the WRF grib2 file just fine [well,  99%].
>
> %> *ncl_filedump* 1807190600_wrfout_arw_d02.grb2 *| less*
>
> There is only *one initial time*  and *one forecast time* on the file. 
> If you want single dimension included in the dimensioning:
>
> %> *ncl_filedump* 1807190600_wrfout_arw_d02.grb2 *-itime* *-ftime* *| 
> less*
>
> %> *ncl_filedump* 1807190600_wrfout_arw_d02.grb2 *-itime* *-ftime*   
> >&!   out.*630_itime_ftime*.1807190600_wrfout_arw_d02
>
> Within an NCL script: 
> https://www.ncl.ucar.edu/Document/Functions/Built-in/setfileoption.shtml
>
> *setfileoption*("grb","SingleElementDimensions","Initial_time")
> or
> *setfileoption*("grb","SingleElementDimensions", 
> (/"Initial_time","Forecast_time"/))
>
>
> ===
> I have also tried the recently released 6.5.0
>
> You get the exact same result.
>
> ===
> NOTE:
>
>
> [a]  Some of the descriptive attributes:
>
>       float *REFC_P8_L10_GLC0_max30min* ( initial_time0_hours, 
> ygrid_0, xgrid_0 )
>          center :       US National Weather Service - NCEP (WMC)
>          production_status :    Operational products
>          long_name :    Composite reflectivity
>          units :        dB
>          _FillValue :   1e+20
>          coordinates :  gridlat_0 gridlon_0
>          grid_type :    Lambert Conformal can be secant or tangent, 
> conical or bipolar
>          parameter_discipline_and_category : Meteorological products, 
> Forecast radar imagery
>          parameter_template_discipline_category_number :        ( 8, 
> 0, 16, 5 )
>          level_type :   Entire Atmosphere
>          level :         0
> *         type_of_statistical_processing :       Maximum
>          statistical_process_duration : 30 minutes (ending at forecast 
> time)*
>          forecast_time :        780
>          forecast_time_units :  minutes
>
> [b] *Warning messages
>
> *
> *The variables are unpacked correctly!!
>
> *
> NCL uses look-up tables to match-up parameter id numbers with 
> information such as lon_name, units, etc.
> Unfortunately, GRIB is a moving target and NCL developers are not 
> privy to information or it is just not publicly available.
>
> So, for example:
>
> *warning: Entry (243)* not found in code table file 
> /Users/shea/devel/ncl/lib/ncarg/grib2_codetables/ncep/4/4.2.0.1.table
> NCL unpacks the variables and creates the appropriate dimension names. 
> It just does not have the needed lookup info.
>
>       float *VAR*_0_1_*243*_P0_L1_GLC0 ( initial_time0_hours, ygrid_0, 
> xgrid_0 )
>          center :       US National Weather Service - NCEP (WMC)
>          production_status :    Operational products
>          long_name :    unknown variable name
>          units :        unknown
>          _FillValue :   1e+20
>          coordinates :  gridlat_0 gridlon_0
>          grid_type :    Lambert Conformal can be secant or tangent, 
> conical or bipolar
>          parameter_discipline_and_category : *Meteorological products, 
> Moisture*
>          parameter_template_discipline_category_number :        ( 0, 
> 0, 1, 243 )
>          level_type : *Ground or water surface*
>          level :         0
>          forecast_time :        780
>          forecast_time_units :  minutes
>
> HTH
> D
>
>
> On Thu, Jul 19, 2018 at 2:26 PM, Jim Means <jim at weatherextreme.com 
> <mailto:jim at weatherextreme.com>> wrote:
>
>     Hello,
>
>     I am trying to find out what's inside a grib2 file created by WRF,
>     and I'm attempting to use ncl_filedump to find out the details.
>     I'm running ncl_filedump with no options:
>
>     ncl_filedump 1807190600_wrfout_arw_d02.grb2
>
>     and I get
>
>     fatal:NclGRIB2: Invalid Product Definition Template.
>
>     Variable: f
>     Type: file
>     (0) File Missing Value : -1
>
>     What am I doing wrong?
>
>
>     Thanks,
>
>     Jim
>
>     -- 
>
>     James D. Means, Ph.D.
>     Senior Atmospheric & Climate Scientist
>     California Office
>     Tele: 619-495-1638 | Fax: 775-636-8430
>     930 Tahoe Blvd., Suite 802-560
>     Incline Village, Nevada 89451
>     jim at weatherextreme.com <mailto:jim at weatherextreme.com> | vcard
>     <http://www.weatherextreme.com/vcards/James%20Means.vcf>
>     www.weatherextreme.com <http://www.weatherextreme.com/>
>
>     <http://www.weatherextreme.com/>
>
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