Figure 4-3: Computer model of gases in tank: approach to steady-state

Headspace height and water depth

both 0.1

m

Surface area of headspaces

0.11

m²

Flow rate into /out of A

2

ml s^-1

Flow rate into /out of C

2

ml s^-1

Transfer velocity for Sc= 600

5

cm hr^-1

Schmidt number dependence

- 0.5

"n"

Water temperature

288

K

Salinity

35

%o

Air pressure

1

atm

Air temperature

293

K

Carbonate Alkalinity

0.0023

mol kg^-1

Initial pCO₂ in all headspaces

450

ppm

Initial pCO₂ in water

350

ppm

pCO₂ in air entering headspace A

1000

ppm

pCO₂ in air entering headspace C

20

ppm

Error in pCO₂ measurement

2

ppm

pSF₆ in air entering headspace A

100

parts per trillion

pSF₆ in air entering headspace C

10

parts per trillion

Error in SF₆ measurement

1

parts per trillion

Time interval for calculations

10

s

Screen width

24

hr

Headspace height and water depth	both 0.1	m
Surface area of headspaces	0.11	m²
Flow rate into /out of A	2	ml s^-1
Flow rate into /out of C	2	ml s^-1
Transfer velocity for Sc= 600	5	cm hr^-1
Schmidt number dependence	- 0.5	"n"
Water temperature	288	K
Salinity	35	%o
Air pressure	1	atm
Air temperature	293	K
Carbonate Alkalinity	0.0023	mol kg^-1
Initial pCO₂ in all headspaces	450	ppm
Initial pCO₂ in water	350	ppm
pCO₂ in air entering headspace A	1000	ppm
pCO₂ in air entering headspace C	20	ppm
Error in pCO₂ measurement	2	ppm
pSF₆ in air entering headspace A	100	parts per trillion
pSF₆ in air entering headspace C	10	parts per trillion
Error in SF₆ measurement	1	parts per trillion
Time interval for calculations	10	s
Screen width	24	hr