The University of Southampton
University of Southampton Institutional Repository

Return of naturally sourced Pb to Atlantic surface waters

Return of naturally sourced Pb to Atlantic surface waters
Return of naturally sourced Pb to Atlantic surface waters
Anthropogenic emissions completely overwhelmed natural marine lead (Pb) sources during the past century, predominantly due to leaded petrol usage. Here, based on Pb isotope measurements, we reassess the importance of natural and anthropogenic Pb sources to the tropical North Atlantic following the nearly complete global cessation of leaded petrol use. Significant proportions of up to 30–50% of natural Pb, derived from mineral dust, are observed in Atlantic surface waters, reflecting the success of the global effort to reduce anthropogenic Pb emissions. The observation of mineral dust derived Pb in surface waters is governed by the elevated atmospheric mineral dust concentration of the North African dust plume and the dominance of dry deposition for the atmospheric aerosol flux to surface waters. Given these specific regional conditions, emissions from anthropogenic activities will remain the dominant global marine Pb source, even in the absence of leaded petrol combustion.
12921
Bridgestock, Luke
e42dd641-55c5-4c8a-ae45-314db73a4e3b
van de Flierdt, Tina
6322ca73-69d3-434e-bf6d-41376bd93b73
Rehkämper, Mark
08591eef-a2d5-48de-9fc6-b5c0cf54f6e5
Paul, Maxence
80b65f26-9dd5-48cc-bf7d-171920915053
Middag, Rob
4603e164-62ef-4c0a-9922-9eefc56a5d2a
Milne, Angela
39b44fbd-8f5e-40ea-80c9-244c20998020
Lohan, M.C.
6ca10597-2d0f-40e8-8e4f-7619dfac5088
Baker, Alex R.
3a011c8c-c15a-4080-9602-6f3628fdca4a
Chance, Rosie
131bdbe5-c918-45ac-a772-e6e1f2c09fc9
Khondoker, Roulin
83864d9c-4088-491b-9576-c2756f88e7a3
Strekopytov, Stanislav
38862e72-541e-4249-9643-e2fb60ec054f
Humphreys-Williams, Emma
bdc779dc-961a-4965-bd06-90d95da5da89
Achterberg, Eric P.
685ce961-8c45-4503-9f03-50f6561202b9
Rijkenberg, Micha J. A.
4df23eb5-1663-4bab-923a-8792ba8f042b
Gerringa, Loes J. A.
b5274dbb-dacb-4caa-8afb-7c9091170b10
de Baar, Hein J. W.
2fdf5118-e219-4517-a72a-de0a2e9fab55
Bridgestock, Luke
e42dd641-55c5-4c8a-ae45-314db73a4e3b
van de Flierdt, Tina
6322ca73-69d3-434e-bf6d-41376bd93b73
Rehkämper, Mark
08591eef-a2d5-48de-9fc6-b5c0cf54f6e5
Paul, Maxence
80b65f26-9dd5-48cc-bf7d-171920915053
Middag, Rob
4603e164-62ef-4c0a-9922-9eefc56a5d2a
Milne, Angela
39b44fbd-8f5e-40ea-80c9-244c20998020
Lohan, M.C.
6ca10597-2d0f-40e8-8e4f-7619dfac5088
Baker, Alex R.
3a011c8c-c15a-4080-9602-6f3628fdca4a
Chance, Rosie
131bdbe5-c918-45ac-a772-e6e1f2c09fc9
Khondoker, Roulin
83864d9c-4088-491b-9576-c2756f88e7a3
Strekopytov, Stanislav
38862e72-541e-4249-9643-e2fb60ec054f
Humphreys-Williams, Emma
bdc779dc-961a-4965-bd06-90d95da5da89
Achterberg, Eric P.
685ce961-8c45-4503-9f03-50f6561202b9
Rijkenberg, Micha J. A.
4df23eb5-1663-4bab-923a-8792ba8f042b
Gerringa, Loes J. A.
b5274dbb-dacb-4caa-8afb-7c9091170b10
de Baar, Hein J. W.
2fdf5118-e219-4517-a72a-de0a2e9fab55

Bridgestock, Luke, van de Flierdt, Tina, Rehkämper, Mark, Paul, Maxence, Middag, Rob, Milne, Angela, Lohan, M.C., Baker, Alex R., Chance, Rosie, Khondoker, Roulin, Strekopytov, Stanislav, Humphreys-Williams, Emma, Achterberg, Eric P., Rijkenberg, Micha J. A., Gerringa, Loes J. A. and de Baar, Hein J. W. (2016) Return of naturally sourced Pb to Atlantic surface waters. Nature Communications, 7, 12921. (doi:10.1038/ncomms12921).

Record type: Article

Abstract

Anthropogenic emissions completely overwhelmed natural marine lead (Pb) sources during the past century, predominantly due to leaded petrol usage. Here, based on Pb isotope measurements, we reassess the importance of natural and anthropogenic Pb sources to the tropical North Atlantic following the nearly complete global cessation of leaded petrol use. Significant proportions of up to 30–50% of natural Pb, derived from mineral dust, are observed in Atlantic surface waters, reflecting the success of the global effort to reduce anthropogenic Pb emissions. The observation of mineral dust derived Pb in surface waters is governed by the elevated atmospheric mineral dust concentration of the North African dust plume and the dominance of dry deposition for the atmospheric aerosol flux to surface waters. Given these specific regional conditions, emissions from anthropogenic activities will remain the dominant global marine Pb source, even in the absence of leaded petrol combustion.

Text
ncomms12921.pdf - Version of Record
Available under License Creative Commons Attribution.
Download (905kB)

More information

Accepted/In Press date: 16 August 2016
e-pub ahead of print date: 28 September 2016
Published date: 28 September 2016
Organisations: Ocean and Earth Science, Marine Biogeochemistry

Identifiers

Local EPrints ID: 402984
URI: http://eprints.soton.ac.uk/id/eprint/402984
PURE UUID: 927696c7-2b54-476f-b9d6-7cb5ab03f5f4
ORCID for M.C. Lohan: ORCID iD orcid.org/0000-0002-5340-3108

Catalogue record

Date deposited: 16 Nov 2016 10:52
Last modified: 16 May 2020 00:41

Export record

Altmetrics

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.

×