Table 6-7: Total and biological carbon

Quantity Units Variable Formula

Time interval since previous measurement days timediff see note 1

net flux into headspaces ppm ml min^-1 netflux hcf * (hci - hco) + lcf * (lci - lco)

tank volume l vol see Section 4.6.1

gas constant R
kg m² s^-2 K^-1 mol^-1
R 8.3145

air temperature (outside tank in flowmeter) K tair see note 2

change in total carbon mol kg^-1
dtotc

10^-12* 60 * 24 * (p / R * tair) * timediff * netflux / (vol * 1.035) (see note 3)

total carbon mol kg^-1 totc totc = totc + dtotc (see note 4)

biological carbon mol kg^-1 bioc totc - tCO₂

Quantity	Units	Variable	Formula
Time interval since previous measurement	days	timediff	see note 1
net flux into headspaces	ppm ml min^-1	netflux	hcf * (hci - hco) + lcf * (lci - lco)
tank volume	l	vol	see Section 4.6.1
gas constant R	kg m² s^-2 K^-1 mol^-1	R	8.3145
air temperature (outside tank in flowmeter)	K	tair	see note 2
change in total carbon	mol kg^-1	dtotc	10^-12* 60 * 24 * (p / R * tair) * timediff * netflux / (vol * 1.035) (see note 3)
total carbon	mol kg^-1	totc	totc = totc + dtotc (see note 4)
biological carbon	mol kg^-1	bioc	totc - tCO₂