remapcon-SCRIP and YAC give different outputs
Added by Shizhu Wang over 4 years ago
Hi all,
I use cdo to remap a nc file of gaussian (384x192) grid to n47 grid like this:
cdo remapcon,n47 in.nc out.nc
When I use cdo1.9.6, the output is
cdo remapcon: YAC first order conservative weights from gaussian (384x192) to gaussian (188x94) grid
When I use cdo1.8.2_gnu, the output is
cdo remapcon: SCRIP first order conservative weights from gaussian (384x192) to gaussian (192x94) grid
So, why do YAC and SCRIP packages give different n47 grids? I think there should be only one type of n47 grid.
Thank you,
Shizhu
Replies (2)
RE: remapcon-SCRIP and YAC give different outputs - Added by Ralf Mueller over 4 years ago
hi!
I am not an expert on these grids, this mismatch is not present for the latest release 1.9.8
% cdo remapscon,n47 -topo tsc.nc cdo(1) topo: Process started cdo remapscon: SCRIP first order conservative weights from lonlat (720x360) to gaussian (188x94) grid cdo(1) topo: cdo remapscon: Processed 259200 values from 1 variable over 1 timestep [0.72s 118MB]. % cdo remapcon,n47 -topo tc.nc cdo(1) topo: Process started cdo remapcon: YAC first order conservative weights from lonlat (720x360) to gaussian (188x94) grid cdo(1) topo: cdo remapcon: Processed 259200 values from 1 variable over 1 timestep [0.68s 69MB].
hth
ralf
RE: remapcon-SCRIP and YAC give different outputs - Added by Shizhu Wang over 4 years ago
Hi ralf,
thank you for the answer. So now the problem is the previous version (e.g., 1.8.2) define the n47 gaussinan grid as
192x94
while the newer version (e.g., 1.9.6 or 1.9.8) define the n47 grid as
188x94
Best,
Shizhu