[gradsusr] Creating a netcdf with a mercator projection, or a reflectivity grib2 file

[Wesley Ebisuzaki]

Tom,

|  I can create a grib2 file with reflectivity as the variable.  I used
g2grb.gs to do this, but there is no standard grib name for reflectivity

How about:

gribtab.dat:{ 0, 1, 0, 0, 15, 1, "BREF", "Base Reflectivity", "dB"},
gribtab.dat:{ 0, 1, 0, 0, 15, 4, "LMAXBR", "Layer Maximum Base
Reflectivity", "dB"},
gribtab.dat:{ 0, 1, 0, 0, 15, 9, "RFCD", "Reflectivity of Cloud Droplets
Validation", "dB"},
gribtab.dat:{ 0, 1, 0, 0, 15, 10, "RFCI", "Reflectivity of Cloud Ice
Validation", "dB"},
gribtab.dat:{ 0, 1, 0, 0, 15, 11, "RFSNOW", "Reflectivity of Snow
Validation", "dB"},
gribtab.dat:{ 0, 1, 0, 0, 15, 12, "RFRAIN", "Reflectivity of Rain
Validation", "dB"},
gribtab.dat:{ 0, 1, 0, 0, 15, 13, "RFGRPL", "Reflectivity of Graupel
Validation", "dB"},
gribtab.dat:{ 0, 1, 0, 0, 15, 14, "RFHAIL", "Reflectivity of Hail
Validation", "dB"},
gribtab.dat:{ 0, 1, 0, 0, 16, 0, "REFZR", "Equivalent radar reflectivity
factor for rain", "mm^6/m^3"},
gribtab.dat:{ 0, 1, 0, 0, 16, 1, "REFZI", "Equivalent radar reflectivity
factor for snow", "mm^6/m^3"},
gribtab.dat:{ 0, 1, 0, 0, 16, 2, "REFZC", "Equivalent radar reflectivity
factor for parameterized convection", "mm^6/m^3"},
gribtab.dat:{ 0, 1, 0, 0, 16, 4, "REFD", "Reflectivity", "dB"},
gribtab.dat:{ 0, 1, 0, 0, 16, 5, "REFC", "Composite reflectivity", "dB"},
  (NCEP local def'n)
gribtab.dat:{ 3, 1, 0, 0, 1, 9, "RFL06", "Reflectance in 0.6 Micron
Channel", "%"},
gribtab.dat:{ 3, 1, 0, 0, 1, 10, "RFL08", "Reflectance in 0.8 Micron
Channel", "%"},
gribtab.dat:{ 3, 1, 0, 0, 1, 11, "RFL16", "Reflectance in 1.6 Micron
Channel", "%"},
gribtab.dat:{ 3, 1, 0, 0, 1, 12, "RFL39", "Reflectance in 3.9 Micron
Channel", "%"},

 Wesley

On Thu, Sep 27, 2012 at 7:26 PM, Thomas Robinson <ter at hawaii.edu> wrote:

> Aloha GrADs Users,
>
> I am trying to create a netCDF file from my GrADS data as a Mercator
> projection.  Apparently when I try to use:
> 'set sdfwrite reflectivity.nc'
> 'sdfwrite reflectivity'
> where reflectivity is my variable and reflectivity.nc is my netCDF file,
> it produces a netCDF file on a lat/lon projection.  So I either need to
> convert the output to a Mercator projection grid or I need to somehow
> create the netCDF from GrADS as a Mercator projection.
>
> ALTERNATIVELY:
> I can create a grib2 file with reflectivity as the variable.  I used
> g2grb.gs to do this, but there is no standard grib name for
> reflectivity.  Just using a different variable name (such as HGT) is
> unacceptable for this project.
>
> Any help you can provide will be most appreciated.
>
> --
> Tom Robinson
> President - Graduate Student Organization
> Graduate Student - Department of Meteorology
> 732-718-2323
>
>
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> gradsusr at gradsusr.org
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>
>
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