The University of Southampton
University of Southampton Institutional Repository

Identifying the processes controlling the distribution of H2O2 in surface waters along a meridional transect in the eastern Atlantic

Identifying the processes controlling the distribution of H2O2 in surface waters along a meridional transect in the eastern Atlantic
Identifying the processes controlling the distribution of H2O2 in surface waters along a meridional transect in the eastern Atlantic
Hydrogen peroxide (H2O2) is an important oxidant for many bio?relevant trace metals and organic compounds and has potential as a tracer for mixing in near surface waters. In this study we combine H2O2 and bio?optical measurements with satellite data for a meridional transect from 46°N to 26°S in the eastern Atlantic in order to determine the key processes affecting its distribution. Surface H2O2 ranged from 21–123 nmol L?1, with maximum inventories (0–200 m) of 5.5–5.9 mmol m?2 found at 30°N and 25°S. Analyses showed a strong positive correlation of surface H2O2 with daily irradiances and recent precipitation, though poor correlations with CDOM suggest sunlight is the limiting reactant for H2O2 formation. Vertical distributions of H2O2 were controlled by a combination of mixing processes and phytoplankton activity. The present study highlights processes controlling global H2O2 distributions and points towards the development of parameterization schemes for prediction via satellite data.
0094-8276
L03616
Steigenberger, S.
15c989b8-dd0d-454c-b3cc-08d4290eaff0
Croot, P.L.
25daf592-4186-462b-b0fd-24c70d3fd605
Steigenberger, S.
15c989b8-dd0d-454c-b3cc-08d4290eaff0
Croot, P.L.
25daf592-4186-462b-b0fd-24c70d3fd605

Steigenberger, S. and Croot, P.L. (2008) Identifying the processes controlling the distribution of H2O2 in surface waters along a meridional transect in the eastern Atlantic. Geophysical Research Letters, 35 (3), L03616. (doi:10.1029/2007GL032555).

Record type: Article

Abstract

Hydrogen peroxide (H2O2) is an important oxidant for many bio?relevant trace metals and organic compounds and has potential as a tracer for mixing in near surface waters. In this study we combine H2O2 and bio?optical measurements with satellite data for a meridional transect from 46°N to 26°S in the eastern Atlantic in order to determine the key processes affecting its distribution. Surface H2O2 ranged from 21–123 nmol L?1, with maximum inventories (0–200 m) of 5.5–5.9 mmol m?2 found at 30°N and 25°S. Analyses showed a strong positive correlation of surface H2O2 with daily irradiances and recent precipitation, though poor correlations with CDOM suggest sunlight is the limiting reactant for H2O2 formation. Vertical distributions of H2O2 were controlled by a combination of mixing processes and phytoplankton activity. The present study highlights processes controlling global H2O2 distributions and points towards the development of parameterization schemes for prediction via satellite data.

This record has no associated files available for download.

More information

Published date: 2008
Organisations: Ocean and Earth Science

Identifiers

Local EPrints ID: 187969
URI: http://eprints.soton.ac.uk/id/eprint/187969
ISSN: 0094-8276
PURE UUID: d0d04d19-271d-4186-ac20-1997994e91c0

Catalogue record

Date deposited: 19 May 2011 09:05
Last modified: 14 Mar 2024 03:28

Export record

Altmetrics

Contributors

Author: S. Steigenberger
Author: P.L. Croot

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×