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[IDV #VTE-700117]: Why is this .nc file not recognized?

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  • Subject: [IDV #VTE-700117]: Why is this .nc file not recognized?
  • Date: Mon, 16 Mar 2015 10:40:03 -0600
Brian,

Two problems:

1/ Add the conventions attribute (Conventions "CF-1.0")
2/ Units for time should be

days since 0000-01-01 12:00 UTC

NOT

days since 0000-01-00 12:00 UTC

Thanks to John Caron for helping get to the bottom of this.

Best,

Unidata IDV Support

> I have worked very hard to make this donated dataset (minimally) 
> CF-complaint, entraining Richard Signell and others,
> but I still just can’t get IDV or Ramadda to recognize it as a geo-grid.
> 
> Anything ring a bell?
> 
> Does time HAVE to be a record dimension?
> Or is my time unit illegal or something, 0000-01-00 12:00 UTC?
> 
> 
> Any help greatly appreciated. Literally hours are sunk into getting it this 
> far.
> Brian
> 
> 
> weather.rsmas.miami.edu<http://weather.rsmas.miami.edu>{bmapes} 134:  
> /data2/brian/MJO_Adames_Wallace_dataset 5:23:09pm: ncdump -h fixed.nc
> netcdf fixed {
> dimensions:
> pres = 27 ;
> lat = 41 ;
> lon = 80 ;
> time = 12053 ;
> variables:
> double T_mjo(time, pres, lat, lon) ;
> double lat(lat) ;
> lat:units = "degrees_north" ;
> double lon(lon) ;
> lon:units = "degrees_east" ;
> double q_mjo(time, pres, lat, lon) ;
> double u_mjo(time, pres, lat, lon) ;
> double v_mjo(time, pres, lat, lon) ;
> double w_mjo(time, pres, lat, lon) ;
> double z_mjo(time, pres, lat, lon) ;
> double time(time) ;
> time:units = "days since 0000-01-00 12:00 UTC" ;
> double pressure(pres) ;
> pressure:units = "hPa" ;
> 
> // global attributes:
> :NCO = "4.3.7" ;
> :history = "Fri Mar 13 17:23:09 2015: ncrename -O -v p_level,pressure 
> fixed.nc\n",
> "Fri Mar 13 11:20:14 2015: ncks -A time2.nc fixed.nc\n",
> "Thu Mar 12 22:50:03 2015: ncks -v time allfields.nc time.nc\n",
> "Fri Mar  6 16:49:38 2015: ncatted -O -a units,p_level,o,c,hPa 
> allfields.nc\n",
> "Fri Mar  6 16:47:20 2015: ncatted -O -a units,time,o,c,days since 0000-01-01 
> 00:00 UTC allfields.nc\n",
> "Fri Mar  6 16:46:45 2015: ncatted -O -a units,lat,o,c,degrees_north 
> allfields.nc\n",
> "Fri Mar  6 16:46:29 2015: ncatted -O -a units,lon,o,c,degrees_east 
> allfields.nc\n",
> "Fri Mar  6 16:46:06 2015: ncatted -O -a units,lon,o,c,degrees_west 
> allfields.nc\n",
> "Thu Mar  5 18:58:01 2015: ncatted -O -a units,lon,m,c,degrees_E 
> allfields.nc\n",
> "Thu Mar  5 18:57:17 2015: ncatted -O -a units,lon,m,c,degrees_E 
> allfields.nc\n",
> "Thu Mar  5 18:57:06 2015: ncatted -O -a units,lat,m,c,degrees_N 
> allfields.nc\n",
> "Thu Mar  5 18:56:37 2015: ncatted -O -a units,time,m,c,days since 0000-01-01 
> 00:00 UTC allfields.nc\n",
> "Thu Mar  5 18:51:10 2015: ncks -A 
> bbf22ba1-1bb6-41ed-88f3-f9fe2c56e137_file_z_mjo_DX_AW.nc allfields.nc\n",
> "Thu Mar  5 18:44:26 2015: ncks -A 
> d0c1228e-9e9d-49e2-9d51-850ab9939bc6_file_q_mjo_DX_AW.nc allfields.nc\n",
> "Thu Mar  5 18:39:44 2015: ncks -A 
> 73a2db1e-2cca-4107-be1e-1a2840355ec0_file_T_mjo_DX_AW.nc allfields.nc\n",
> "Thu Mar  5 18:34:56 2015: ncks -A 
> b8c7ec79-c3fc-4699-9f76-0c738e97fbba_file_w_mjo_DX_AW.nc allfields.nc\n",
> "Thu Mar  5 18:32:09 2015: ncks -A 
> 970b6ea8-b52f-464c-8e37-6cdf841c6acd_file_v_mjo_DX_AW.nc allfields.nc" ;
> }
> 
> 
> It is big.
> http://weather.rsmas.miami.edu/repository/entry/show/RSMAS-UM+Repository+for+atm-ocean+data+and+its+science/Datasets+hosted+on+this+UM+server+/MJO+fields+Adames-Wallace/fixed.nc?entryid=synth%3A100ae90b-71ac-4d38-add9-f8982a976322%3AL2ZpeGVkLm5j<http://weather.rsmas.miami.edu/repository/entry/show/RSMAS-UM+Repository+for+atm-ocean+data+and+its+science/Datasets+hosted+on+this+UM+server+/MJO+fields+Adames-Wallace/fixed.nc?entryid=synth:100ae90b-71ac-4d38-add9-f8982a976322:L2ZpeGVkLm5j>
> 
> 
> 
> *********************************************
> Brian Mapes, Professor
> Department of Atmospheric Sciences
> Meteorology and Physical Oceanography Program
> RSMAS, University of Miami
> 4600 Rickenbacker Causeway
> Miami, FL 33149-1098
> 
> phone: (305) 421-4275
> fax: (305) 421-4696
> email: address@hidden<mailto:address@hidden>
> Web: http://www.rsmas.miami.edu/users/bmapes/
> **********************************************
> 
> 
> 
> 
> 
> 


Ticket Details
===================
Ticket ID: VTE-700117
Department: Support IDV
Priority: Normal
Status: Closed