Re: ocean bottom topography mask

To my knowledge, NCL does not have what you want built-in.
Also, you did not specify what resolution you are looking for.

---
NCL' built-in land-sea mask is at 1 degree.
--
Here are some file you may find useful.
ftp ftp.cgd.ucar.edu
anonymous
email
prompt
cd pub/shea/Misc
mget POP_TGRID*
get ETOPO2_GLOBAL_2_ELEVATION.nc
quit
  116738184 Jan 23 20:53 ETOPO2_GLOBAL_2_ELEVATION.nc
  172801612 Jan 23 21:27 POP_TGRID.2400x3600.nc
    4425540 Jan 23 21:27 POP_TGRID.320x384.nc
The ETOP02 file contains 2-minute elevations
The POP_TGRID files provide ocean basin mask and depth
used for the POP ocean model.
POP_TGRID.2400x3600.nc is about 0.1 deg resolution
POP_TGRID.320x384.nc is about 1 deg resolution
see: http://www.ncl.ucar.edu/Applications/pop.shtml
---
On 1/23/14, 8:26 PM, Ioana Colfescu wrote:
>
> Hi,
>
> Is there any map/function in NCL that could give you a mask that of the
> ocean bottom topography ?
> There are functions for masking land/sea , is there any such function or
> way to get a sort of 3d mask that has the ocean mask + bottom topography
> of the ocean too ?
> thanks,
>
> Ioana
>
>
>
>
>
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