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How to interpolate data on curvilinear grid using remapdis into a lonlat grid with search radius 1.25 degrees
Added by Amit Kumar about 7 years ago
Hi all,
I'm trying to convert a curvilinear grid dataset into a lonlat grid dataset with grid size 2.5 degree. The resolution of curvilinear dataset is pixel level i.e. at nadir it is 4km but away it increases. Now for doing this I want to interpolate the curvilinear dataset by using remapdis but I want to change the search radius to 1.25 degrees. please help how to do it.
The output of sinfo of curvilinear file
File format : netCDF4 ZIP
-1 : Institut Source Ttype Levels Num Points Num Dtype : Parameter ID
1 : unknown IMAGER instant 1 1 7898880 1 I16z : -1
2 : unknown IMAGER instant 1 1 7898880 1 F32z : -2
Grid coordinates :
1 : curvilinear : points=7898880 (2805x2816)
Longitude : 0.84 to 327.67 degrees_east
Latitude : -81.04 to 327.67 degrees_north
Vertical coordinates :
1 : surface : levels=1
Time coordinate : 1 step
RefTime = 2000-01-01 00:00:00 Units = minutes Calendar = standard
YYYY-MM-DD hh:mm:ss YYYY-MM-DD hh:mm:ss YYYY-MM-DD hh:mm:ss YYYY-MM-DD hh:mm:ss
0412-12-19 01:46:32
cdo sinfo: Processed 2 variables over 1 timestep ( 0.22s )
the grid i want to use:
gridtype = lonlat
gridsize = 525
xname = lon
xlongname = longitude
xunits = degrees_east
yname = lat
ylongname = latitude
yunits = degrees_north
xsize = 25
ysize = 21
xfirst = 40
xinc = 2.5
yfirst = -20
yinc = 2.5
Yes, I think Ralf is looking into it, why the number of points taken in consideration for assigning weight do not change when the search radius is changed from default. The variable values are same for both the files (plainDis and Radius1.25) after interpolation, that should not happen.
Regards....
