Table 1 Mean GA03 North Atlantic aerosol data (±1SD) for each air mass, as defined by back-trajectory modeling43

From: Tracing and constraining anthropogenic aerosol iron fluxes to the North Atlantic Ocean using iron isotopes

Air mass

Fe loading

Instantaneous Fe solubility

Mean bulk δ56Fe

Mean water-soluble δ56Fe

Mean (Pb/Al)Bulk

(ng m−3)

%

‰IRMM

‰IRMM

Saharan 2010

3000 ± 1300

0.4 + 0.2

+0.12 ± 0.03

+0.08 ± 0.03

0.0006 ± 0.0002

Saharan 2011

3100 ± 1600

0.3 ± 0.1

+0.13 ± 0.03

+0.09 ± 0.02

0.0004 ± <0.0001

Saharan

3000 + 1400

0.4 ± 0.1

+0.12 ± 0.03

+0.09 ± 0.02

0.0005 ± 0.0001

Euro. 2010

81 + 61

8.7 ± 7.8

−0.04 ± 0.03*

−1.20 ± 0.11

0.0096 ± 0.0077

N.Am. 2011

45 ± 32

3.6 ± 1.8

−0.16 ± 0.06

−1.08 ± 0.36

0.0057 ± 0.0034

Euro. & N.Am.

66 ± 51

6.0 ± 6.7

−0.12+0.06

−1.15 ± 0.24

0.0079 ± 0.0062

UCC

−

−

+0.09

−

0.0002

  1. See Supplementary Data 1 for the full dataset. Saharan denotes aerosol from the Saharan air masses for both years, Euro & N.Am. denotes aerosols from either European or North American air masses. Fe solubility denotes instantaneous solubility in ultrapure water (see Methods). Fe loading, Fe solubility and (Pb/Al)Bulk are reproduced from previous work43,44,45, 58, and UCC denotes typical upper continental crust composition32, 48. For *, only one sample was measured, so this is shown rather than the mean
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