Hi,
I would like to create an ensemble with perturbed initial conditions. In particular, I would like to perturb the initial temperature randomly for any grid cell with a number in [-1, 1] Kelvin. Can you please instruct me how to do that? I know that I can use the "ncap2" command to perturb all grid cells with the SAME number, e.g.
ncap2 -s 'where(TT>0.) TT=TT+0.1;' input.nc -O output.nc
However, I want to perturb each grid cell with a different random number in [-1,1]. I checked the WRF user guide, but I could only find stochastic parametrization schemes, which are not what I am looking for.
Any help would be greatly appreciated. Thanks!
I would like to create an ensemble with perturbed initial conditions. In particular, I would like to perturb the initial temperature randomly for any grid cell with a number in [-1, 1] Kelvin. Can you please instruct me how to do that? I know that I can use the "ncap2" command to perturb all grid cells with the SAME number, e.g.
ncap2 -s 'where(TT>0.) TT=TT+0.1;' input.nc -O output.nc
However, I want to perturb each grid cell with a different random number in [-1,1]. I checked the WRF user guide, but I could only find stochastic parametrization schemes, which are not what I am looking for.
Any help would be greatly appreciated. Thanks!