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Tracing the carbon cycle. Fe: produit dans la dernière phase de fusion. CNO. Éléments > Fe: activation par neutrons. Éléments fissionable. Instable. Vostok – a 500 ka record of climate in an ice core. Expanded carbon cycling in the boreal, temperate and tropical forests. - PowerPoint PPT Presentation
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Clark & Aravena
Tracing Tracing thethe
carbon carbon cyclecycle
-2
0
2
4
6
8
10
12
0 10 20 30 40 50 60 70 80 90 100
log
ab
on
da
nce
(ato
me
s / 1
06 Si)
H
He
Li
Be
B
Fe
Ca
Sc
CO
UTh
PbPt
Ni
Tc Pm
N
NeSiS
Fe:produit dans la dernière phase
de fusionÉléments > Fe:activation par
neutrons
Instable
CNO
Éléments fissionable
Clark & Aravena
Vostok – a 500 ka
record of climate inan ice core
-500
-490
-480
-470
-460
-450
-440
-430
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-410
0 100000 200000 300000 400000
Years before present
Deu
teriu
m ‰
VS
MO
W
D T
°C
-64
-62
-60
-58
-56
-54
-52
0 100000 200000 300000 400000
Years before present
d18 O
‰ V
SM
OW
-14
-12
-10
-8
-6
-4
-2
0
2
4
D T
°C
160
180
200
220
240
260
280
300
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340
0 100000 200000 300000 400000
Years before present
Atm
osp
he
ric
CO
2 p
pm
v
-14
-12
-10
-8
-6
-4
-2
0
2
D T
°C
Expanded carbon cycling in the boreal, temperate and tropical forests
160
180
200
220
240
260
280
300
320
340
0 100000 200000 300000 400000
Years before present
Atm
osp
he
ric
CO
2 p
pm
v
-14
-12
-10
-8
-6
-4
-2
0
2
D T
°C
CO2 from increased respiration in soils at higher T
150
200
250
300
350
0 5 10 15 20 25 30 35 40
Temperature
CO
2 p
pm
CO2 atmosphèrique en equilibre avec
des eaux marines CO2 degassing withincreased T
0.00001
0.0001
0.001
0.01
0.1
1
10
100
1000
10000
100000
1000000
Li Be B C N F Na Mg Al Si P S Cl K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Rb Sr
pp
m
Croûte
Rivières
Eau marine
0.001
0.01
0.1
1
10
100
1000
10000
100000
1000000
10000000
100000000
1000000000
Li Be B C N F Na Mg Al Si P S Cl K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Rb Sr
Facteur d'enrichissement
Temps de résidence océanique
Solanki et al., 2004, Nature 431, 1084
Anthropogenic COAnthropogenic CO22 is is increasing during a time of increasing during a time of maximum solar activity – maximum solar activity –
the highest in 10,000 the highest in 10,000 years.years.
250
270
290
310
330
350
370
390
CO
2 p
pm
Tracing the Sulfur Cycle
Sulfate Cycle in Groundwater
34S composition of Geological Materials of Different Origin
