Table 2 Atmospheric deposition rates of Fe during spring and summer 2010.

Station	Date	Mid Lat (^oN)	Mid Lon (^oW)	Aerosol soluble Fe concentration <1 µm (pmol m⁻³)	Aerosol soluble Fe concentration >1 µm or total^a (pmol m⁻³)	Dry Fe deposition (nmol m⁻² d⁻¹)	Notes/Citations
Spring 2010							Coincident with Eyjafjallajokull volcanic eruption 14^th April – 22^nd May
TM02	28/04/10	58.38	20.88	—	4 ± 0.3^a	2^a
TM03	30/04/10	59.70	30.59	—	31.7 ± 6.8^a	19^a
TM04	03/05/10	59.98	30.26	—	51.8 ± 7.1^a	31^a
TM05	06/05/10	60.97	22.88	—	159.2 ± 3.6^a	96^a
TM06	07/05/10	62.50	19.97	—	227.5 ± 5.3^a	138^a
TM07	08/05/10	63.10	18.75	—	4532 ± 60. 5^a	2741^a
TM08	08/05/10	63.09	19.08	—	3976 ± 85^a	2405^a
TM09	09/05/10	63.39	21.31	—	351.3 ± 174.9^a	212^a
Summer 2010
TM10	18/07/10	60.00	38.59	3.7 ± 0.5	2.1 ± 1	2.2 ± 0.9^b	42
TM11	20/07/10	60.72	38.49	3.2 ± 1.1	6.1 ± 1.5	5.6 ± 1.4^b	42
TM12	24/07/10	61.19	32.98	2 ± 0.3	2.9 ± 0.5	2.7 ± 0.5^b	42
TM13	27/07/10	59.42	33.40	6.3 ± 2.4	11.8 ± 1	10.8 ± 1.1^b	42
TM14	31/08/10	63.41	29.43	5 ± 1.1	10 ± 0.7	9.0 ± 0.7^b	42
TM15	05/08/10	61.18	22.42	4.2 ± 1.8	6.5 ± 0.6	5.9 ± 0.7^b	42

^aReported aerosol concentration and dry depositional fluxes of Fe based upon total soluble Fe concentrations only. Dry deposition rate calculated assuming depositional velocities of 0.7 cm s⁻¹ due to presence of volcanic ash in aerosol samples.
^bDry deposition rates calculated assuming depositional velocities of 1 cm s⁻¹ for the coarse aerosol fraction (>1 µm) and 0.1 cm s⁻¹ for the fine aerosol fraction (<1 µm).
The latitudes and longitudes are the midpoints of aerosol sample collection.

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