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Wuttig, Kathrin; Heller, Maija I; Croot, Peter L (2013): Superoxide decay rates during METEOR cruise M83/1. PANGAEA, https://doi.org/10.1594/PANGAEA.823500, Supplement to: Wuttig, K et al. (2013): Pathways of Superoxide (O2-)Decay in the Eastern Tropical North Atlantic|. Environmental Science & Technology, 47, 10249-10256, https://doi.org/10.1021/es401658t

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Abstract:
Superoxide is an important transient reactive oxygen species (ROS) in the ocean formed as an intermediate in the redox transformation of oxygen (O2) into hydrogen peroxide (H2O2) and vice versa. This highly reactive and very short-lived radical anion can be produced both via photochemical and biological processes in the ocean. In this paper we examine the decomposition rate of O2- throughout the water column, using new data collected in the Eastern Tropical North Atlantic (ETNA) Ocean. For this approach we applied a semi factorial experimental design, to identify and quantify the pathways of the major identified sinks in the ocean. In this work we occupied 6 stations, 2 on the West African continental shelf and 4 open ocean stations, including the CVOO time series site adjacent to Cape Verde. Our results indicate that in the surface ocean, impacted by Saharan aerosols and sediment resuspension, the main decay pathways for superoxide is via reactions with Mn(||) and organic matter.
Coverage:
Median Latitude: 15.933554 * Median Longitude: -22.040914 * South-bound Latitude: 12.501000 * West-bound Longitude: -24.251667 * North-bound Latitude: 17.650500 * East-bound Longitude: -17.622167
Date/Time Start: 2010-10-17T23:15:00 * Date/Time End: 2010-10-22T07:47:00
Minimum DEPTH, water: 19 m * Maximum DEPTH, water: 600 m
Event(s):
M83/1_769 (GO-FLO 1) * Latitude: 17.650160 * Longitude: -24.250160 * Date/Time: 2010-10-17T23:15:00 * Elevation: -3593.7 m * Campaign: M83/1 * Basis: Meteor (1986) * Device: Go-Flo bottles (GOFLO) * Comment: Nutrients; Trace Metals (10;20;40)
M83/1_771 (GO-FLO 2) * Latitude: 17.650500 * Longitude: -24.249500 * Date/Time: 2010-10-18T01:33:00 * Elevation: -3593.1 m * Campaign: M83/1 * Basis: Meteor (1986) * Device: Go-Flo bottles (GOFLO) * Comment: Nutrients; Trace Metals (10; 150; 170)
M83/1_775 (GO-FLO 3) * Latitude: 17.649667 * Longitude: -24.249333 * Date/Time: 2010-10-18T08:47:00 * Elevation: -3593.8 m * Campaign: M83/1 * Basis: Meteor (1986) * Device: Go-Flo bottles (GOFLO) * Comment: Nutrients; Trace Metals (10)
Comment:
log value=6.00 means smaller than 6
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2DEPTH, waterDepth watermGeocode
3Copper, log-decay ratelog k CuWuttig, Kathrin
4Standard deviationStd dev±Wuttig, Kathrin
5Copper, intercept of decay ratek int Cu1/sWuttig, Kathrin
6Standard deviationStd dev±Wuttig, Kathrin
7Iron, log-decay ratelog k FeWuttig, Kathrin
8Standard deviationStd dev±Wuttig, Kathrin
9Iron, intercept of decay ratek int Fe1/sWuttig, Kathrin
10Standard deviationStd dev±Wuttig, Kathrin
11Manganese, log-decay ratelog k MnWuttig, Kathrin
12Standard deviationStd dev±Wuttig, Kathrin
13Manganese, intercept of decay ratek int Mn1/sWuttig, Kathrin
14Standard deviationStd dev±Wuttig, Kathrin
15Sea-water, decay ratek SW1/sWuttig, Kathrin
16Diethylenetriaminepentaacetic acid, decay ratek DTPA1/sWuttig, Kathrin
Size:
500 data points

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