Impact of cyclonic eddies and typhoons on biogeochemistry in the oligotrophic ocean based on biogeochemical/physical/meteorological time-series at station KEO

Progress in Earth and Planetary Science

Table 2 Comparison of simulated Δ_intAN_(eddy)-supported C production with annual C export flux based on new production, particulate organic carbon (POC), and dissolved organic carbon (DOC) fluxes at station S1 and annual net community productivity (aNCP) in surface mixed layer at station KEO. POC flux at 100 and 200 m of station S1 were observed by seasonal drifting sediment trap deployment (Honda et al. 2016). Due to the many challenges of making sediment trap time-series from a mooring that extends into shallow water, for this KEO study, a deep sediment trap time-series mooring was used

	mol-C m⁻² year⁻¹	References
Δ_intAN_(eddy)-supported production^a	2.0–2.6	This study
Annual N export flux based on:
New production at S1^b	3.2	Matsumoto et al. (2016); Honda et al. (2017); Sasai et al. (2016)
POC flux at 100 m of S1	1.7	Honda et al. (2016)
POC flux at 200 m of S1	1.3	Honda et al. (2016)
POC + DOC flux at 200 m of S1^c	2.7	Wakita et al. (2016)
aNCP in surface mixed layer at KEO	7 ± 3	Fassbender et al. (2017)

^aΔ_intAN_(eddy) (0.31–0.40 mol-N m⁻² year⁻¹) multiplied by the Redfield ratio (6.6)
^bNet primary productivity (10.6 mol-C m⁻² year⁻¹) multiplied by F ratio (0.3)
^cPOC flux 2.49 mol-C m⁻² year⁻¹; DOC flux 0.25 mol-C m⁻² year⁻¹