mass_concentration_of_biological_taxon_expressed_as_chlorophyll_in_sea_water

under discussion
Created: April 27, 2018
Proposer: Roy Lowry
Proposed Date: 2018-04-13
Arising from CF trac #99.
Change Date: April 27, 2018, 10:46 a.m.
Term: mass_concentration_of_biological_taxon_expressed_as_chlorophyll_in_sea_water
Unit: kg m-3
Unit ref: UKMC
AMIP:
GRIB:
Mass concentration means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction "A_expressed_as_B", where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. Chlorophyll means all naturally occurring pigments of the chlorophyll group. Biological taxon is a name or other label identifying an organism or a group of organisms as belonging to a unit of classification in a hierarchical taxonomy.
Change Date: April 27, 2018, 12:35 p.m.
Term: mass_concentration_of_biological_taxon_expressed_as_chlorophyll_in_sea_water
Unit: kg m-3
Unit ref: UKMC
AMIP:
GRIB:
Mass concentration means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction "A_expressed_as_B", where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. Chlorophylls are the green pigments found in most plants, algae and cyanobacteria; their presence is essential for photosynthesis to take place. There are several different forms of chlorophyll that occur naturally. All contain a chlorin ring (chemical formula C20H16N4) which gives the green pigment and a side chain whose structure varies. The naturally occurring forms of chlorophyll contain between 35 and 55 carbon atoms. Biological taxon is a name or other label identifying an organism or a group of organisms as belonging to a unit of classification in a hierarchical taxonomy.