Default Z Coordinate for LROSE FRACTL

Perhaps I’ve missed it in the documentation or parameterization file, but what is the default vertical coordinate for FRACTL? It’s difficult to determine if it’s meters above ground, sea level, or above a certain radar when using it in complex terrain.

Great question! You are correct that it is not clear in the documentation. However, in digging through the code I believe that the z-coordiantes need to be km MSL.