Table 1.
Seasonally Resolved Natural Carbon Flux Anomalies (Pg C yr−1Per Unit Standardized SAM index) for the Upper 100 ma
| Annual Average | Summer | Winter | |
|---|---|---|---|
| south of 55°S | |||
Upward advection 
|
3.6 ± 1.9 | 3.9 ± 2.5 | 3.1 ± 2.6 |
POC and PIC export 
|
0.08 ± 0.04 | 0.19 ± 0.10 | 0.007 ± 0.005 |
CO2 flux 
|
0.04 ± 0.02 | -0.09 ± 0.03 | 0.10 ± 0.04 |
| across 55°S | |||
horizontal advection 
|
3.6 ± 1.2 | 3.6 ± 1.9 | 3.3 ± 1.8 |
| north of 55°S | |||
Upward advection 
|
-3.4 ± 2.5 | -4.1 ± 3.6 | -2.9 ± 3.3 |
POC and PIC export 
|
-0.03 ± 0.05 | 0.20 ± 0.09 | -0.08 ± 0.06 |
CO2 flux 
|
0.09 ± 0.03 | -0.01 ± 0.05 | 0.13 ± 0.06 |
a
Positive CO2 flux anomaly indicates additional outgassing or less uptake. Note that the horizontal advection across 55°S is the integral of the flux divergence 
between the southern boundary and 55°S.