Hello, I have been using WRF for a continuous period of four months. I have used ERA5 data as the initial field and boundary conditions. I have plotted a time series of surface rainfall in the watershed obtained by integration. Upon comparison, I have noticed that the simulated precipitation is more than twice the observed precipitation. I would like to reduce the simulated precipitation by nudging it to the observation level. I have attached a list of my "namelist.iput" and simulation results. As my domain is 4km resolution with a 150 x 150 grid, I think it would be more reasonable to use grid nudging.
Could you provide me with suggestions for setting up nudging parameters to lower my simulated precipitation?
Thanks a lot.
Could you provide me with suggestions for setting up nudging parameters to lower my simulated precipitation?
Thanks a lot.