'computation based on radius using formula from Mari (1999)' for new TEP-C P01

[hanrev]

This request has come from existing ticket - nvs-vocabs/P01#278
For new P01 term:

1. Concentration as carbon of transparent exopolymer particle {TEP} per unit volume of the water body [particulate >0.4/0.45um phase] by filtration, (Alcian Blue) staining, optical microscopy and image analysis and computation based on radius using formula from Mari (1999)

Analytical protocol details: 'The TEP-carbon content was calculated using the formula with D=-2.55 and r being the radius of the examined TEP: TEP-Cmicro [µg L-1] = 0.25x 10-6x r-D.'

Proposed pref. label: 'computation based on radius using formula from Mari (1999)' OR 'computation using Mari (1999) formula'
Proposed definition: 'Carbon content of the given transparent exopolymer particle (TEP-C) has been computed using the formula TEP-Cmicro [µg L-1] = 0.25x 10-6x r-D from Mari (1999) where r is the radius [um] of the examined particle and D = -2.55. Mari, X. (1999). Carbon content and C:N ratio of transparent exopolymeric particles (TEP) produced by bubbling exudates of diatoms. Mar Ecol Prog Ser 183:59-71.'

Need to specify radius in codnam or is reference to radius in description sufficient enough?

[hanrev]

Mari (1999) paper: https://backend.orbit.dtu.dk/ws/portalfiles/portal/3703534/Mari.pdf

[gwemon]

@hanrev I agree that we don't really need to specify radius because it is part of the formula. So your suggestion "computation using Mari (1999) formula" with your proposed definition is fine.

[hanrev]

Pref. label: 'computation using Mari (1999) formula'
Definition: 'An equation used to estimate the carbon content of transparent exopolymer particles (TEP) based on the equivalent spherical diameter of the particle and a fractal dimension value of 2.55. TEP-Carbon (ug) for each particle=0.25 x 10^-6 r^2.55. Mari, X. (1999). Carbon content and C:N ratio of transparent exopolymeric particles (TEP) produced by bubbling exudates of diatoms. Mar Ecol Prog Ser 183:59-71.'

[hanrev]

New term created and will be live on the NVS tomorrow.

codval: S050270
codnam: computation using Mari (1999) formula
description: An equation used to estimate the carbon content of transparent exopolymer particles (TEP) based on the equivalent spherical diameter of the particle and a fractal dimension value of 2.55. TEP-Carbon (ug) for each particle=0.25 x 10^-6 r^2.55. Mari, X. (1999). Carbon content and C:N ratio of transparent exopolymeric particles (TEP) produced by bubbling exudates of diatoms. Mar Ecol Prog Ser 183:59-71.