[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Does TDS really synthesize CF curvilinear coordinates for GRIB data?

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.


  • Subject: Re: Does TDS really synthesize CF curvilinear coordinates for GRIB data?
  • Date: Fri, 09 Apr 2010 11:19:26 -0600

Steve Hankin wrote:
Hi John,

At the NCDC meeting we talked about IOPS's for various binary data formats. I *thought* I heard you say that the recent TDS IOSP for GRIB data would automatically synthesize the CF curvilinear coordinates. When I look at examples like the ones below on Motherlode, I spot only coordinates in kilometers. (polar stereographic and lambert conformal examples listed below)

Did I misunderstand something? What is your recommendation for getting generating the curvilinear (CF) coordinate variables that we need for the UAF project? We don't want to do it manually if it is already a solved problem.

   sorry to trouble you.  I know you're busy - Steve

http://motherlode.ucar.edu:8080/thredds/dodsC/fmrc/NCEP/GFS/Alaska_191km/NCEP-GFS-Alaska_191km_fmrc.ncd.html http://motherlode.ucar.edu:8080/thredds/dodsC/fmrc/NCEP/RUC2/CONUS_20km/surface/NCEP-RUC2-CONUS_20km-surface_best.ncd.html

we dont automatically generate the 2D coords, but we could. the main issue 
would be to figure out how to tell the GRIB IOSP to do so, ie configuration. 
Would this be a global setting, or per-dataset? I assume this is coming through 
a TDS?