(RESOLVED) Appropriate method to ungrib surface and pressure level data from same product

Hello,

Suppose I have two different files for ERA-Interim, one for pressure level data and one for surface level data, both of which are needed to initialize WRF (e.g. https://rda.ucar.edu/datasets/ds627.0/#!access)

What is the appropriate way to ungrib and metgrid these data? Do I ungrib one file type at a time, and then combine in the metgrid step? Or can I ungrib both file types at the same time given that they share the same Vtable?

Thanks!

Hi,
Take a look at these instructions in our Users' Guide: http://www2.mmm.ucar.edu/wrf/users/docs/user_guide_v4/v4.0/users_guide_chap3.html#_Using_Multiple_Meteorological

They describe the method for using 2 different data sources, but this also applies to using the same data source, with 2 different types of data contained in each. Hopefully this helps!