[ncl-talk] ESMF-Regriding from a lat lon grid to Cylindrical Equal Area projection grid

[Rick Brownrigg]

Hi Jinwoong,

There's an undocumented interface in NCL to the Proj4 cartographic
projection library, which could be used to project your lat/lon grid into a
cylindrical equal-area grid.  Its simple to use, but requires direct
knowledge of proj4.  If you can provide me your lat/lon grid, I can try to
put together an example of how to do the reprojection.

Rick


On Thu, Jun 18, 2015 at 4:59 PM, Jinwoong Yoo <jinwoongyoo at unm.edu> wrote:

>  Hi,
>
>
>  I would like to regrid my lat-lon grid to cylindrical equal area grid
> using NCL (ESMF-regrid). It is not just for the graphical purpose but for
> the purpose of calculating area by counting pixels. So just plotting my
> lat-lon data onto the cylidrical equal area projection is not an issue
> here, which can be solved referencing "
> https://www.ncl.ucar.edu/Document/Graphics/Scripts/ncl_map_projections.ncl
> ".
>
>
>  I guess I need a sample nc file in the cylidrical equal area projection
> as  a destination file to generate a weight file for ESMF-regrid.
>
> Please correct me if I'm wrong.
>
> Or if anybody knows how to do the job or where to get the "destination
> file" , please let me know.
>
>
>  Thank you.
>
>
>  Jinwoong Yoo
>
> UNM
>
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