Phillip wrote:If you don't run the model globally your domain has boundaries which are affected by the conditions outside of the domain. As a result, you need information for either the boundary (which is contained in the boundary files) or you have to simulate the outside. The only domain which does not require boundary files is one covering the whole earth, since it is periodic.
In other words: If you want to run the model without initial data for all time steps you have to do a global run. Inside the global simulation you can nest smaller domains for downscaling. Initializing a global run only requires one time step of global input data.
Where is your domain located and how large is it?
Check this page for information on how to start a global run:
http://www.mmm.ucar.edu/wrf/users/docs/ ... htm#global
It's the chapter of the WRF manual which explains how to start a global run.
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