Change GRID size of a netCDF file
Added by Chandrakant Singh over 5 years ago
Assuming I have 2 separate netCDF files with each of grid size 0.5x0.5 degrees and 0.25x0.25 degrees respectively. What I want to do is convert them to same grid size so I can perform raster calculations and comparisons easily.
Can this be done using CDO or any other method which is scientifically acceptable (as increasing or decreasing grid sizes using certain methods as bilinear, cubic interpolation, etc or whichever is best)?
Is it good to change 0.25x0.25 file to 0.5x0.5 degrees or vice-versa?
I am kind of confused with the remap feature of CDO. Can someone please provide an opinion?
Thanks in advance.
Replies (1)
RE: Change GRID size of a netCDF file - Added by Karin Meier-Fleischer over 5 years ago
Hi Chandrakant,
please, have a look at the FAQ https://code.mpimet.mpg.de/projects/cdo/wiki/FAQ#How-can-I-remap-my-data-to-a-different-grid-of-another-data-file.
The answer to your question if it is good to remap in general depends on what you want/have to do, and it's always an interpolation.
-Karin