Environmental Engineering Reference
In-Depth Information
Table 19.2
Model results for peak rate and total amount of C addition, peak
p
CO
2
and
ocean surface temperature, and minimum
Ω
calcite
and pH for all the 21 scenarios. Also
included are calculations of total amount of C needed in a simple mixing model.
Peak amount
released
(Gt C) in
simple
mixing
model
Peak
amount
released
(Gt C)
in cGENIE
Peak rate
(Gt C yr
-
1
)
in cGENIE
13
C
source
δ
Initial C
(mol)
‰
(
)
Scenario
10
18
Ω
calcite, init
¼
10 9.3
-
9
1
66
338 003
93 000
-
12
2
25
152 337
69 750
-
15
3
13
92 820
55 800
-
20
4
7
55 587
41 850
-
25
5
5
39 746
33 480
-
40
6
2
21 592
20 925
-
60
7
1
13 496
13 950
10
18
Ω
calcite, init
¼
5 6.7
-
9
8
50
256 561
67 000
-
12
9
19
115 620
50 250
-
15
10
10
70 271
40 200
-
20
11
5
42 008
30 150
-
25
12
3
29 958
24 120
-
40
13
2
16 175
15 075
-
60
14
1
10 058
10 050
10
18
Ω
calcite, init
¼
2.5
4.9
-
9
15
38
195 203
49 000
-
12
16
14
87 708
36 750
-
15
17
7
53 366
29 400
-
20
18
4
31 837
22 050
-
25
19
3
22 671
17 640
-
40
20
1
12 183
11 025
-
60
21
1
7554
7350
Maximum
p
CO
2
(ppm)
Maximum
sea surface
T
(
C)
Minimum surface
saturation state of
calcite (
13
C
source
δ
Minimum
pH
(
‰
)
Ω
calcite
)
Ω
calcite, init
¼
-
10
9
126 837
37.1
0.95
6.26
-
12
54 307
33.0
1.72
6.59
-
15
31 978
30.6
2.45
6.79
-
20
18 817
28.4
3.43
7.00
-
25
13 589
27.1
4.19
7.12
-
40
8067
25.0
5.68
7.32
-
60
5877
23.9
6.78
7.43
Ω
calcite, init
¼
5
-
9
95 964
35.7
0.66
6.25
-
12
41 334
31.8
1.13
6.56
-
15
24 607
29.5
1.55
6.76
-
20
14 833
27.4
2.09
6.95
-
25
10 948
26.2
2.47
7.06
-
40
6829
24.4
3.20
7.23
