Dear All,

I think a new Standard Name 'sea_floor_depth_below_sea_surface' is what's 
needed here.  My definition for this would be 'The vertical distance between 
the sea surface and the seabed at a given point in space and at a given instant 
in time or averaged over a time interval that is significantly less than a 
tidal cycle (1 hour or less).' This may seem complicated, but is needed to 
cover BPRs which do some averaging to smooth out waves.  My take on 
'height_above_sea_floor' would be as the z co-ordinate for something inside a 
water body. 

May be worth pointing out to Jeff that there is already 
'sea_water_pressure_at_sea_floor' for BPR data that haven't been converted to 
depth.

I've expressed this as a depth rather than as a height to be consistent with 
'sea_floor_depth_below_sea_level' and so we don't end up with different terms 
for the same quantity depending upon whether one is looking upwards or 
downwards.

Cheers, Roy.

-----Original Message-----
From: cf-metadata-boun...@cgd.ucar.edu 
[mailto:cf-metadata-boun...@cgd.ucar.edu] On Behalf Of Jeff deLaBeaujardiere
Sent: 26 January 2010 22:22
To: cf-metadata@cgd.ucar.edu
Cc: Mike Garcia
Subject: [CF-metadata] seeking CF name for total water column height

Hello-

I am a new subscriber. We are hoping to adopt CF names wherever possible in the 
context of the Integrated Ocean Observing System (IOOS) Sensor Observation 
Services (SOS). Not all phenomena we measure have immediately apparent CF 
names, however. We are using this URL as a reference:
http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standard-name-table/current/cf-standard-name-table.html

The first example is total water column height as derived from a bottom 
pressure recorder associated with a tsunami warning buoy. This is not 
sea_surface_height_above_reference_ellipsoid or _above_sea_level. It might be 
height_above_sea_floor but we're not really sure what that refers to (height of 
what?).

Is there a standard name present or planned that is equivalent to 
total_water_column_height?

Thanks for any information,
Jeff DLB

-- 
Jeff de La Beaujardière, PhD
Senior Systems Architect, Data Integration Framework
Integrated Ocean Observing System (IOOS) Program Office
National Oceanic and Atmospheric Administration
1100 Wayne Ave #1225, Silver Spring MD 20910 USA
+1 301 427 2427
jeff.delabeaujardi...@noaa.gov 
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