| Ross Sea: Comparison of Production, New Production and Export | ||||||
| Cruise = | P2 | Units = mmol C/m^2/d | ||||
| Method | Source | Comments | Orca | Minke | Sei | mean |
| 14 C | Marra/Barber/Smith | 45.3 +/- 1.2 | 88.5 +/- 68.5 | 50 | 61.3 | |
| (n=3) | (n=2) | (n=1) | ||||
| 18O | Bender | Gross C | 148 +/- 8 | 213 +/- 60 | 224 | 183 +/- 63 |
| Net C | 44 +/- 8 | 49 +/- 20 | 104 | 56 +/- 38 | ||
| Dark respiration | 70 +/- 8 | 140 +/- 69 | 32 | 86 +/- 52 | ||
| Net C- O2 electrode | 56 | |||||
| 15N | Cochlan/Bronk | 15NO3 | 31.1 +/- 17.3 | 76.3 +/- 71.1 | 29.7 (n=1) | 48.4 |
| Total | 110.1 +/- 8.7 | 168.4 +/- 150 | 64.3 (n=1) | 114.4 | ||
| f-value | (0.28) | (0.44) | (0.46) | (0.42) | ||
| delta- stocks | ||||||
| NCP | Sweeney | 7.3 mol/m2 | ||||
| TOC | " | 6.6 mol/m2 | ||||
| Export | " | export to end of P2 | 0.7 mol/m2 | |||
| Export | " | 100 m: P2(T2) - P2(T1) | 51 +/- 64 | |||
| POC | Gardner | 100m: P2(T1)- P1(T2) increase | 65 | |||
| 100 m: P2(T2) - P2(T1) decrease | 131 | |||||
| 100 m | 0.5 (loss) | 151 (loss) | ||||
| 234Th export | Cochran | 100m steady-state | 18.8 | 58.9 | 11.8 | 29.8 |
| 100 m non-steady state | 46.4 +/- 26.7 | 80.2 +/- 22.8 | NA | 63 | ||
| (1/19-2/1/97) | (1/13-2/8/97) | |||||
| 200m trap | Dymond | Avg. or best estimate | 0.36 | NA | 0.17 | |
| C4 1/18-2/4 | 0.36 | NA | 0.17 | |||
| C5 2/4-2/21 | 1.5 | NA | 0.25 | |||
| (note-flux increase at Orca after P2) | ||||||
| 500m trap | Avg. C7-9 | 1.9 | NA | 0.48 | ||
| C7 1/8-1/26 | 0.63 | 0.15 | ||||
| C8 1/26-2/4 | 1.6 | 0.23 | ||||
| C9 2/4-2/21 | 2.7 | 0.78 | ||||