Iron in the Sargasso Sea
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
2005
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| _version_ | 1867168555377623040 |
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| author | Sedwick, Peter Church, T M Bowie, Andrew R Marsay, Christopher M Ussher, S J Achilles, K M Lethaby, P J Johnson, Rodney J Sarin, Manmohan M McGillicuddy, Dennis |
| author_facet | Sedwick, Peter Church, T M Bowie, Andrew R Marsay, Christopher M Ussher, S J Achilles, K M Lethaby, P J Johnson, Rodney J Sarin, Manmohan M McGillicuddy, Dennis |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We report iron measurements for water column and aerosol samples collected in the Sargasso Sea during July-August 2003 (summer 2003) and April-May 2004 (spring 2004). Our data reveal a large seasonal change in the dissolved iron (dFe) concentration of surface waters in the Bermuda Atlantic Time-series Study region, from ~1-2 nM in summer 2003, when aerosol iron concentrations were high (mean 10 nmol/m**3), to ~0.1-0.2 nM in spring 2004, when aerosol iron concentrations were low (mean 0.64 nmol/m**3). During summer 2003, we observed an increase of ~0.6 nM in surface water dFe concentrations over 13 days, presumably due to eolian iron input; an estimate of total iron deposition over this same period suggests an effective solubility of 3-30% for aerosol iron. Our summer 2003 water column profiles show potentially growth-limiting dFe concentrations (0.02-0.19 nM) coinciding with a deep chlorophyll maximum at 100-150 m depth, where phytoplankton biomass is typically dominated by Prochlorococcus during late summer. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_738263 |
| institution | PANGAEA |
| language | en |
| publishDate | 2005 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Iron in the Sargasso Sea Sedwick, Peter Church, T M Bowie, Andrew R Marsay, Christopher M Ussher, S J Achilles, K M Lethaby, P J Johnson, Rodney J Sarin, Manmohan M McGillicuddy, Dennis Bottle, Niskin; FeATMISS1; FeATMISS1-1; FeATMISS1-1-P; FeATMISS1-2; FeATMISS1-2-P; FeATMISS1-3; FeATMISS1-3-P; FeATMISS1-4; FeATMISS1-4-P; FeATMISS1-5; FeATMISS1-5-P; FeATMISS1-6; FeATMISS1-6-P; FeATMISS2; FeATMISS2-1; FeATMISS2-1-P; FeATMISS2-2; FeATMISS2-2-P; ironclimatology; NIS; PUMP; Water pump; Weatherbird II We report iron measurements for water column and aerosol samples collected in the Sargasso Sea during July-August 2003 (summer 2003) and April-May 2004 (spring 2004). Our data reveal a large seasonal change in the dissolved iron (dFe) concentration of surface waters in the Bermuda Atlantic Time-series Study region, from ~1-2 nM in summer 2003, when aerosol iron concentrations were high (mean 10 nmol/m**3), to ~0.1-0.2 nM in spring 2004, when aerosol iron concentrations were low (mean 0.64 nmol/m**3). During summer 2003, we observed an increase of ~0.6 nM in surface water dFe concentrations over 13 days, presumably due to eolian iron input; an estimate of total iron deposition over this same period suggests an effective solubility of 3-30% for aerosol iron. Our summer 2003 water column profiles show potentially growth-limiting dFe concentrations (0.02-0.19 nM) coinciding with a deep chlorophyll maximum at 100-150 m depth, where phytoplankton biomass is typically dominated by Prochlorococcus during late summer. |
| title | Iron in the Sargasso Sea |
| topic | Bottle, Niskin; FeATMISS1; FeATMISS1-1; FeATMISS1-1-P; FeATMISS1-2; FeATMISS1-2-P; FeATMISS1-3; FeATMISS1-3-P; FeATMISS1-4; FeATMISS1-4-P; FeATMISS1-5; FeATMISS1-5-P; FeATMISS1-6; FeATMISS1-6-P; FeATMISS2; FeATMISS2-1; FeATMISS2-1-P; FeATMISS2-2; FeATMISS2-2-P; ironclimatology; NIS; PUMP; Water pump; Weatherbird II |
| url | https://doi.org/10.1594/PANGAEA.738263 |