viewing lambert projection netcdf files

[Jennifer Adams]

On Aug 29, 2005, at 12:49 PM, Bryan C. Weare wrote:

> Hi all,
>    I want to view model output in lambert projection stored as netcdf
> files using GRADS 1.9b2.
You need 1.9b4 for PDEF to work with DTYPE netcdf.

> http://grads.iges.org/grads/gadoc/SDFdescriptorfile.html says this can
> be done and gives a WRF example. Looking at this I assume that this is
> a
> matter of putting the right keywords and values in "global" attributes.
> I have tried this. The file opens fine, but does not do the
> transformation. Below is the relevant part of the ncdump for the file.
> Can anyone help me?
>    Thanks.
>       Bryan
>
> dimensions:
>        longitude = 88 ;
>        latitude = 68 ;
> variables:
>        float longitude(longitude) ;
>                longitude:units = "degrees_east" ;
>        float latitude(latitude) ;
>                latitude:units = "degrees_north" ;
>        short lu(latitude, longitude) ;
>                lu:long_name = "land use" ;
>                lu:units = "index" ;
>                lu:scale_factor = 1.f ;
>
> // global attributes:
>                :WEST-EAST_GRID = 88 ;
>                :SOUTH-NORTH_GRID = 68 ;
>                :WEST-EAST_PATCH_START_UNSTAG = 1 ;
>                :WEST-EAST_PATCH_END_UNSTAG = 88 ;
>                :WEST-EAST_PATCH_START_STAG = 1 ;
>                :WEST-EAST_PATCH_END_STAG = 89 ;
>                :NORTH-SOUTH_PATCH_START_UNSTAG = 1 ;
>                :NORTH-SOUTH_PATCH_END_UNSTAG = 68 ;
>                :NORTH-SOUTH_PATCH_START_STAG = 1 ;
>                :NORTH-SOUTH_PATCH_END_STAG = 69 ;
>                :DX = 30000.f ;
>                :DY = 30000.f ;
>                :CEN_LAT = 37.5f ;
>                :CEN_LON = -121.5f ;
>                :TURELAT1 = 69.f ;
>                :TURELAT2 = 34.f ;
>                :MAP_PROJ = 1 ;
>
>
--
Jennifer Miletta Adams
Center for Ocean-Land-Atmosphere Studies (COLA)
4041 Powder Mill Road, Suite 302
Calverton, MD 20705 USA
jma at cola.iges.org