Dear Mehrnoush;

If you want to convert the GRIB2 to NetCDF, you should know the limitation with both of formants.

One of the NetCDF limitations is its special projections. which mean your data should be just in  Mercator, Gaussian,Lambert or Polar projection. otherwise that's impossible to convert your data from GRIB2 to NetCDF.

So I ask you to define you data exactly, then I hope I'll be able to help you.

Regards

M. Tabatabaei

If you have NCAR command language tools (NCL) installed then use `ncl_convert2nc`. On Linux machines (e.g Debian) the package that contains it is called `ncl_ncarg`.

The usage is:

>> ncl_convert2nc

GRIB2 support has been added in version 4.3.0

You can also look at Climate Data Operators (cdo) or python IRIS package: http://stackoverflow.com/questions/15432587/converting-netcdf-to-grib2

Hope it helps.

PS. Please consider upvoting useful answers.

I use wgrib2 to do it http://www.cpc.ncep.noaa.gov/products/wesley/wgrib2/

NCL will get it solve for you........................ncl_convert2nc

Thanks all for useful suggestion .

Hello,

GRIB file can be read into Python, using module "pygrib". For example, as in my script "Merep-rohk.py", where I read and plot ECMWF sea level pressure data.

Data fields can be written into netcdf, using module "netCDF4". Here I attached a script "MSGtoNC.py", which I use to write netcdf from METEOSAT files. To make regular grid in the projection, what I need, I also use an interpolation.

Aleksei V.

Dear Aleksei,

Many thanks for your complete explanation and useful attached files.

Best

some times, ncl_convert2nc is not work well because of its definition of data type. you can write a ncl scripts and convert it to nc by yourself, it is only need read and write, no additinal work.

The Climate Data Operators (CDO) offers a neat way to convert grib into netcdf files

cdo -f nc copy file.grb file.nc

https://www.unidata.ucar.edu/software/netcdf/workshops/2012/third_party/CDO.html

I have the same question. I tried the cdo command and the error I get is given below:

cdo copy: Open failed on >fnl_20190429_12_00.grib<

Any sugeestions or comments on this wil be helpful! Thank you

CDO can be used for this purpose.

direct commands in Linux or

use cygWin64 in Windows

cdo -f nc copy inpu.grb output.nc

Add the option ’-r’ to create a relative time axis, as is required for proper recognition by GrADS or Ferret

cdo -r -f nc copy inpu.grb output.nc

Hi,

In addition to all of the answers, I have written a code in R Studio Software.

Using this code you can easily convert Gribe into NetCDF files.

Good Luck,

Setareh

is anybody familiar on how to read "grib2.bin" files?

You may try the [ECMWF] GRIB_API tool grib_to_netcdf

grib_to_netcdf wnd10m.gdas.201005.grb2 -o wnd10m.gdas.201005.nc

or the [NCEP] wgrib2 tool

wgrib2 -netcdf wnd10m.gdas.201005.nc wnd10m.gdas.201005.grb2

or the NCL tool

ncl_convert2nc wnd10m.gdas.201005.grb2