There's another option, I think. The definition for depth_below_geoid
includes
this:
' "Depth_below_X" means the vertical distance below the named surface X.'
There are no other depth_below_X variables on the list, though. In the long
run, I think we should add a mandatory 'reference surface' attribute to the
"plain" depth variable. Have we had that discussion, at least in part?
Anyway,
in the short term, maybe we should add depth_below_sea_floor - it seems
much
clearer than the existing alternatives.
Nan
On 8/13/14 12:20 AM, John Graybeal wrote:
> Hi Reyna,
>
> Yes, this is in scope for CF.
>
> There is a standard name height_above_sea_floor (no definition,
> canonical units meters) which has the meaning you need, if you use a
> negative number for the distance your data is below the sea floor.
>
> If this is not ideal, possibly we could add depth_below_sea_floor
> (which is where *I* would look for such data) to the standard names
> list. So I sort of hope you ask for that new name. ;-)
>
> I will take advantage of your query to propose a definition for
> height_above_sea_floor, to wit: "Height_above_sea_floor is the
> vertical distance above the surface of the seabed. Negative values
> indicate locations below the seabed."
>
> John
>
>
> On Aug 12, 2014, at 16:35, Reyna Jenkyns <reyna at uvic.ca
> <mailto:reyna at uvic.ca>> wrote:
>
>> Hi,
>>
>> Although most of our data is in the water column, we are also serving
>> data from beneath the seafloor in boreholes from the IODP program. Is
>> there a way in the vertical dimension to reflect the combination of
>> seafloor depth and the meters below seafloor that a sensor is
>> positioned? Or is this sort of data outside the scope of the CF
>> convention? We have data like temperature, pressure and resistivity
>> inside boreholes.
>>
>> Any recommendations for representation that information would be
>> appreciated.
>>
>> Thanks,
>>
>>
>>
>>
>> Reyna Jenkyns | Data Stewardship Team Lead - Digital Infrastructure
>> Ocean Networks Canada | T 250 853 3908 |oceannetworks.ca
>> <http://oceannetworks.ca/>
>> University of Victoria PO Box 1700 STN CSC 2300 McKenzie Avenue
>> Victoria, BC V8W 2Y2
>>
>> _______________________________________________
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>
>
>
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--
*******************************************************
* Nan Galbraith Information Systems Specialist *
* Upper Ocean Processes Group Mail Stop 29 *
* Woods Hole Oceanographic Institution *
* Woods Hole, MA 02543 (508) 289-2444 *
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