Figure 11.
Values for carbon budget inventories (white boxes, mol C m−2) and fluxes (blue boxes, mmol C m−2 d−1) measured directly at two high bloom stations (35 and 57), with percent transfers in red. Seasonal net community production (sNCP) is the sum of the integrated observed drawdown in dissolved inorganic carbon (ΔDIC) and gas exchange (GasEx). Some of the sNCP contributes to the buildup of mesozooplankton biomass (ΔZoop), particulate organic carbon (ΔPOC), and dissolved inorganic carbon (ΔDOC). The remainder is seasonal export (sExportC). This inventory is converted to a rate (ExportC, in blue) by dividing by the number of open water days (OWD). The export rate can then be compared to flux measurements from drifting traps at 60 m, 150 m, and 300 m depths, and the moored trap at 365 m. Drifting traps and the moored trap capture efficiencies were not intercalibrated, so comparisons are qualitative only. The two rate values for the 365 m trap are for the time at station (coincident, left) and at the peak flux (about ten days later, right). The remaining Export C flux is mostly accounted for with bacterial carbon demand (BCD) and zooplankton respiration (ZoopResp); see Ducklow et al. (2015). The total annual export (0.32 mmol C m−2) to the moored trap (365 m) is ∼10% of the seasonal sExportC inventory (3.2 mmol C m−2) at the time of the ASPIRE sampling Sta. 57 on December 31.
Carbon budgets for two peak bloom stations in the ASP.

Values for carbon budget inventories (white boxes, mol C m−2) and fluxes (blue boxes, mmol C m−2 d−1) measured directly at two high bloom stations (35 and 57), with percent transfers in red. Seasonal net community production (sNCP) is the sum of the integrated observed drawdown in dissolved inorganic carbon (ΔDIC) and gas exchange (GasEx). Some of the sNCP contributes to the buildup of mesozooplankton biomass (ΔZoop), particulate organic carbon (ΔPOC), and dissolved inorganic carbon (ΔDOC). The remainder is seasonal export (sExportC). This inventory is converted to a rate (ExportC, in blue) by dividing by the number of open water days (OWD). The export rate can then be compared to flux measurements from drifting traps at 60 m, 150 m, and 300 m depths, and the moored trap at 365 m. Drifting traps and the moored trap capture efficiencies were not intercalibrated, so comparisons are qualitative only. The two rate values for the 365 m trap are for the time at station (coincident, left) and at the peak flux (about ten days later, right). The remaining Export C flux is mostly accounted for with bacterial carbon demand (BCD) and zooplankton respiration (ZoopResp); see Ducklow et al. (2015). The total annual export (0.32 mmol C m−2) to the moored trap (365 m) is ∼10% of the seasonal sExportC inventory (3.2 mmol C m−2) at the time of the ASPIRE sampling Sta. 57 on December 31.

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