Hi John,
Would it be appropriate to add _expressed_as_carbon, as indicated in the description (which follows an existing CF pattern)?
Best wishes,
Philip
Sent by Philip Cameron-Smith from his blackberry.
----- Original Message -----
From: John Graybeal [mailto:john.graybeal at marinexplore.com]
Sent: Tuesday, June 04, 2013 07:06 PM
To: CF Metadata List <cf-metadata at cgd.ucar.edu>
Subject: [CF-metadata] new standard name for primary productivity of carbon per unit volume
I would like to request a CF standard name.
Name: net_primary_productivity_of_carbon_per_unit_volume
Units: kg m-3 s-1
Definition: Net primary productivity is the excess of gross_primary_producivity (rate of synthesis of biomass per unit volume from inorganic precursors by autotrophs, or "producers", especially by photosynthesising plants using sunlight for energy) over the rate at which they themselves respire some of this biomass (plant_respiration, assuming all producers to be plants). "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains.
There is an existing net_primary_productivity_of_carbon, expressed per unit area. As we are making a data set available which is integrated over a vertical extent, producing values with units to match (i.e., kg m-3 s-1), a new standard name is needed.
Note: It appears the definition of net primary productivity may assume the value will be measured as per unit area. This probably needs to be corrected.
John
------------------------------------
John Graybeal
Senior Data Manager, Metadata and Semantics
T +1 (408) 675-5545
F +1 (408) 616-1626
skype: graybealski
Marinexplore
920 Stewart Drive
Sunnyvale, CA
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Received on Wed Jun 05 2013 - 09:11:53 BST
