Altimeter data  #198

Is there an way to add altimeter data to the netcdf files?

I would assume including "m_water_depth" in the deploymentrealtime.ymal would work, but what parameters does it need?

Starting with this and wondering what else I need to include - or if it should be formatted differently?
water_depth:
source: m_water_depth
long_name: altimeter depth
standard_name: water_depth
units: m
coordinates: time depth latitude longitude

Thanks for the help!