Table 2.

Estimated FP export flux at 100 m for various sensitivity runs for the period October–March

Run	KRILLBASE data	MIZ data period	FPP rate (mg C ind−1 d−1)	Attenuation rate (Martin’s b value)	Total FP100 export flux (GT C)	% of satellite exporta
A	All	1994–2014	3.2	0.32	0.039	17.1–60.6
B	All	1994–2014	0.67	0.32	0.008	3.7–13.1
C	All	1994–2014	6.29	0.32	0.079	34.6–122.8
D	All	1994–2014	3.2	0.10b	0.055	24.3–86.3
E	All	1994–2014	3.2	0.62b	0.024	10.5–37.3
F	Unstandardised—medianc	1994–2014	3.2	0.32	0.002	0.9–3.1
G	Unstandardised—90%d	1994–2014	3.2	0.32	0.053	23.9–82.1
H	Unstandardised—meane	1994–2014	3.2	0.32	0.031	13.9–49.0

A is the standard model run; the remaining runs are as for run A but with the following adjustments, B: minimum FPP rates, C: maximum FPP rates, D: minimum FP attenuation rates, E: maximum FP attenuation rates, F: Unstandardised KRILLBASE data –median density, G: Unstandardised KRILLBASE data –90^th percentile density, H: Unstandardised KRILLBASE data –mean density

^aTotal krill FP export flux at 100 m (FP₁₀₀) as percentage of a range of satellite-derived estimates of total POC export (Table 1)

^bLiterature derived FP attenuation rates^{8, 11}

^cCalculated assuming a spatially and temporally constant krill density equal to the median of unstandardised krill density data >0 ind. m⁻²

^dCalculated assuming a spatially and temporally constant krill density equal to the ninetieth percentile value of unstandardised krill density data >0 ind. m⁻²

^eCalculated assuming a spatially and temporally constant krill density equal to the mean of all unstandardised krill density data