|
|
|
|
|
| 50,000 |
||||
| Gt |
||||
| ??? |
||||
| 8,000 Gt |
|
|
|
|
| Oil, Gas, |
|||
| Tars
& |
|||
| Shales |
|||
| Carbon
Sources and Sinks |
| 7,000 Gt |
| 6,000 Gt |
| Coal |
| 5,000 Gt |
|
|
|
| Methane |
||
| Hydrates |
||
|
|
|
|
|
|
|
| 21st |
||||||
| Century’s |
||||||
| Emissions |
||||||
| ??? |
||||||
|
|
|
| Scales of Potential |
||
| Carbon Sinks |
||
| 4,000 Gt |
| 3,000 Gt |
|
|
|
| Soil & |
||
| Detritus |
||
| 4 |
| 2,000 Gt |
| Ocean |
|
|
|
| Atmo- |
||
| sphere |
||
| 3 |
| Plants |
| 1,000 Gt |
| 2 |
|
|
|
| pH |
||
| <
0.3 |
||
| 1800 |
| constant |
| 0 Gt |
|
|
|
| 39,000 |
||
| Gt |
||
|
|
|
| 20th |
||
| Century |
||
| Carbon Resources |