Day 14 SERIES SF6 evolution

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Day 1-4 SERIES SF6 evolution
Sigma-t /m 0.023 0.018 0.019 0.027 0.0394
at sig-t 24.917 24.913 24.910 24.956 24.943 Dep
th 13m 10m 9m 14m 8m
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Vertical SF6 diffusion during mid period during
SERIES
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SF6 vertical distribution mid-period
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Vertical SF6 diffusion during initial period
during SERIES
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Vertical Fe loss during initial period 0.18
nM d-1 (Cast 11J/ Kz 1.34 cm-2 s-1 and ML
10m) during mid period 0-1.7 pM d-1 (Cast
17J/SOIREE upper bound 0.32 cm-2 s-1, ML
30m) Vertical Silicate supply during mid
period 0-0.025 uM d-1 (Cast 78/SOIREE upper
bound 0.32 cm-2 s-1, ML 30m) During end period
0-0.06 uM d-1 (Cast 95/SOIREE upper bound 0.32
cm-2 s-1, ML 30m) Kaiyo-Maru max drawdown
0-0.08 uM d-1

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D2 D4 D6 D8
D10 D12 D14
D2 D4 D6 D8
D10 D12 D14
SERIES SF6 patch dimensions from Objective
mapping
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1) from the growth in the area of the patch, from
the objectively mapped data (excluding map
1)   Gamma ? 6.2 /1 1.2 times 10-7
s-1   2) from the
growth in the length of gaussians fitted to the
data (excluding maps 1, 11, 12, 13,
14), background of 2 fmol   ? 9.1 /1 1.7 times
10-7 s-1   3) from the growth in the length of
gaussians fitted to the objective maps (excluding
maps 1, 13, 14),background of 5 fmol   ? 7.4
/1 1.2 times 10-7 s-1   No significant
difference. Taking (2) as best estimate gives ?
0.08 day-1 SOIREE   ? 8 /- 3 x 10-7 s-1
(0.07 d-1) NATRE ? 3 /- 0.5 x 10-7 s-1
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Patch length increases exponentially , width
stabilises The width of the patch
(s_y) is w 2.8 km (2s_y 5.6 km)   so the
diffusivity is Ky w2.? 2.82. 1E6
9.1E7 7 m2 s-1 Okubos estimates 2-16 m2
s-1 SOIREE 4 /- 2 m2 s-1 IronEx1 25
m-2s-1 PRIME 22 m2 s-1  
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  With drawdown of 6 umol Si by end of Tully
occupation, the strain rate ? gives a supply of
6 0.08 0.5 µmol d-1 As net phytoplankton
growth rate is 0.13, daily cell loss from patch
cente due to stirring is 38 Estimated gross
growth rate is µ 0.13 0.08 0.21 d-1 Chl
concentration of 3 mg chl m-3 then gives
Chlorophyll production rate of 0.6 mg chl m-3
d-1   Ratio of silicate supply to chlorophyll
production is then Si/chl 0.8 mol Si / g
chlorophyll   So Carbon chl ratio 50/12 4 mol
C per g chl gives a silicate to carbon uptake
ratio of si/c 0.2 mol Si per mol C (assuming
steady state)