3. Example: Adding levels to a field

This example will describe how to add height agl levels to the SPFH field in the postcntrl_gfs.xml and postcntrl_gfs_f00.xml configuration files. Using your favorite text editor, edit each configuration file by adding the bold highlighted levels to the field ‘Specific humidity on flight levels’.

Leave no whitespace between the opening <level> and 20. and between 100. and the closing </level>

For the list of available levels for each level type, please reference the UPP documentation on ‘Controlling which levels UPP outputs’.

You may also easily remove levels from the <level> tag by simply deleting them from the list.

* Formatting is important; use other entries in the file as a guide.