Ingo Bethke

Nudging functionality for SE should be in place already since CESM2.1. When I find the time, I will try to test it.

I will give it a try and will report back in a week or so. There are two use cases to test: (1) nudging against output produced by the model...

Hi @Ovewh @MichaelSchulzMETNO U,V nudging in NorESM3 works out of the box, as shown in the verification plot below (I produced some hourly output at a single location). I performed...

An alternative is to use the xESMF python package (https://xesmf.readthedocs.io/en/stable/) and tell it to read in the weights that you generated with ESMF_RegridWeightGen. Here is an example https://ns9039k.web.sigma2.no/datalake/ingo/people/fangxing/regrid_ne30.py I can...

@mvertens Nice suggestion. Thanks for sharing the code. In the long term, it could be useful to add capability to NorESM3 to perform the interpolation of nudging input online, on-the-fly...

@Ovewh The xESMF solution seems to work (though I did not plot the result). Please find an example below. The example requires the xesmf and xarray python libraries. For testing...

Sounds great. Thanks for the info, Mariana. Some remarks regarding the nudging input data in /nird/datalake/NS9039K/inputdata/CAM_nudging/met_data/era5/1.25x0.4712: Using certain versions of HDF5, I receive an error when trying to read the...

@Ovewh An example shell-script for the vertical interpolation using cdo: ``` #!/bin/sh -evx source /cluster/projects/nn9039k/people/pgchiu/conda/py3env.sh # create vertical grid file cat vct_L58.txt # prepare merged input file (pick only first...

@Ovewh The result for the zonal mean zonal wind could hint that there is something wrong with the vertical interpolation as the extratropical jet extends way too far down. Maybe...

@mvertens That's great news. I am looking forward to using that new capability. In any case, I will try to verify Ove's vertical offline-interpolation. I kind of hope that the...