Extracting data from rotated pole NetCDF
Added by Kyle Eckart about 10 years ago
Hello,
I have a question about extracting data from NetCDF files for a specific grid location. The data is stored in a rotated pole grid format, so I need to know how to either convert the coordinates I am interested (given in latitude and longitude) in to the same format so that I know which data to extract, or transform the data so that it is stored according to latitude and longitude.
I am working on a Windows computer and have the NetCDF, FAN, and CDO packages installed; however, I haven't yet used CDO. I attached a printout of the metadata from one of the files as well as a document which contains details about the coordinate system. Any help would be appreciated.
Thank you for your time!
| info.txt (2.5 KB) info.txt | metadata | ||
| cordex_archive_specifications_2.2_30sept2013.pdf (643 KB) cordex_archive_specifications_2.2_30sept2013.pdf | data specification description |
Replies (1)
RE: Extracting data from rotated pole NetCDF - Added by Jaison-Thomas Ambadan about 10 years ago
Hi,
use the REMAP GRID operators if you would like to remap to regular lon-lat grid. Please have a look at the CDO doc section 2.12.1 here: https://code.zmaw.de/projects/cdo/embedded/current/cdo.html#x1-5110002.12.1
extracting data from NetCDF files for a specific grid location
for example,
cdo -remapnn,lon=10.0_lat=53.0 -remapbil,r360x180 ifile ofile
will first remap the ifile to regular lon-lat (r360x180 implies global regular one degree) using remapbil (bilinear interpolation), and then select the specified grid near given location (lon=10,lat=53) using the remapnn (nearest neighbour)
Also, I recommend searching the forum for more examples.
Cheers,
J