Auxiliary Material for Paper 2010GB003780

A carbon budget for a naturally iron fertilized bloom in the Southern Ocean

Paul J. Morris 
National Oceanography Centre, Southampton, University of Southampton, 
Southampton, UK

Now at Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution,
Woods Hole, Massachusetts, USA

and Richard Sanders
National Oceanography Centre, Southampton, University of Southampton, 
Southampton, UK


Morris, P. J., and R. R. Sanders (2011), A carbon budget for a naturally iron fertilized bloom in the Southern Ocean, 
Global Biogeochem. Cycles, 25, XXXXXX, doi:10.1029/2010GB003780.


Introduction
Supplementary tables containing meta-data and data collected as part of the CROZEX study in 2004/5.


1. 2010gb003780-ts01.doc
Supplementary Table 1.
Introduction
This table contains meta-data and data collected as part of the CROZEX study in 2004/5.  Meta-data includes station ID, 
date sampled, position and region within the study area.  Data includes 100 m inventories of chlorophyll-a (chl-a), total 
organic nitrogen (TON), particulate organic carbon (POC), particulate organic nitrogen (PON) and nitrate draw-down (ΔNO3-).  
These data are necessary for the construction of Figure 4 and Figure 5.
1. Supplementary Table 1.
1.1 Column “Station”, ID of each station sampled.
1.2 Column “Date”, dd/mm/yy of when each station was sampled.
1.3 Column “Lat °S”, degrees south, latitude of stations sampled.
1.4 Column “Long °E”, degrees E, longitude of stations sampled.
1.5 Column “Region”, region within the study area.
1.6 Column “Chl-a”, mg m-2, 100 m integrated chl-a.
1.7 Column “TON”, mmol m-2, 100 m integrated TON.
1.8 Column “POC”, mmol m-2, 100 m integrated POC.
1.9 Column “PON (mmol m-2)”, 100 m integrated PON.
1.10 Column “ΔNO3- (mmol m-2)”, 100 m integrated ΔNO3-.

Supplementary table 1 legend
Station number, position, region and 100 m integrated Chl-a, DON, POC PON and ΔNO3-.  All integrations were performed 
with a trapezoidal type integration.

Supplementary table 1 footnotes
aLocations not sampled at an ‘M’ station are identified with their Discovery station number.
bStation M3.2 has been grouped with the southern stations because it was shown to be influenced by water from the south 
(Pollard et al. 2007b).


2. 2010gb003780-ts02.doc
Supplementary Table 2.
Introduction
This table contains data collected as part of the CROZEX study in 2004/5.  The table shows the calculation of biogenic 
silica export calculated using the 234Thorium technique.  The table also reiterates 234Thorium fluxes and particulate 
organic export estimates carried forward from Morris et al. (2007).
2. Supplementary Table 2.
2.1 Column “Station”, ID of each station sampled.
2.2 Column “234Th flux at 100 m”, dpm m-2 d-1, 100 m integral of 234Th flux.
2.3 Column “bSi:Th ratio”, μmol dpm-1, ratio of biogenic silica to 234Th in particles >53 μm
2.4 Column “234Th-bSiex”, mmol m-2 d-1, export of biogenic silica.
2.5 Column “234Th-Cex”, mmol m-2 d-1, export of particulate organic carbon.

Supplementary table 2 legend
100 m 234Th fluxes, bSi:Th ratios in the >53 μm SAPS samples and calculated 234Th-bSiex.  Errors for individual stations 
are propagated 1 σ analytical uncertainties and the values in bold are regional averages and associated standard errors.

Supplementary table 2 footnotes
a234Th fluxes and 234Th-Cex are taken from Morris et al. (2007). 
bStation M3.2 has been grouped with the southern stations because is was show to be influences by water from the south 
(Pollard et al. 2007b).
cFor the southern region only leg 2 stations were carried forward for the calculation of export duration.  On leg 1 the bulk 
particulate export had not occurred in this region and for the analysis to remain consistent with the other regions, only the 
southern stations that were sampled after the southern bloom were used.