Global distribution of atmospheric phosphorus sources, concentrations and deposition rates, and anthropogenic impacts

Mahowald, Natalie, Jickells, Timothy D., Baker, Alex R. ORCID: https://orcid.org/0000-0002-8365-8953, Artaxo, Paolo, Benitez-Nelson, Claudia R., Bergametti, Gilles, Bond, Tami C., Chen, Ying, Cohen, David D., Herut, Barak, Kubilay, Nilgun, Losno, Remi, Luo, Chao, Maenhaut, Willy, McGee, Kenneth A., Okin, Gregory S., Siefert, Ronald L. and Tsukuda, Seigen (2008) Global distribution of atmospheric phosphorus sources, concentrations and deposition rates, and anthropogenic impacts. Global Biogeochemical Cycles, 22 (4). ISSN 1944-9224

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Abstract

A worldwide compilation of atmospheric total phosphorus (TP) and phosphate (PO4) concentration and deposition flux observations are combined with transport model simulations to derive the global distribution of concentrations and deposition fluxes of TP and PO4. Our results suggest that mineral aerosols are the dominant source of TP on a global scale (82%), with primary biogenic particles (12%) and combustion sources (5%) important in nondusty regions. Globally averaged anthropogenic inputs are estimated to be ~5 and 15% for TP and PO4, respectively, and may contribute as much as 50% to the deposition over the oligotrophic ocean where productivity may be phosphorus-limited. There is a net loss of TP from many (but not all) land ecosystems and a net gain of TP by the oceans (560 Gg P a-1). More measurements of atmospheric TP and PO4 will assist in reducing uncertainties in our understanding of the role that atmospheric phosphorus may play in global biogeochemistry.

Item Type:	Article
Uncontrolled Keywords:	sdg 15 - life on land ,/dk/atira/pure/sustainabledevelopmentgoals/life_on_land
Faculty \ School:	Faculty of Science > School of Environmental Sciences University of East Anglia Research Groups/Centres > Theme - ClimateUEA
UEA Research Groups:	Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences Faculty of Science > Research Groups > Marine and Atmospheric Sciences (former - to 2017) Faculty of Science > Research Groups > Climate, Ocean and Atmospheric Sciences (former - to 2017)
Depositing User:	Rosie Cullington
Date Deposited:	25 Feb 2011 14:19
Last Modified:	20 Mar 2023 12:32
URI:	https://ueaeprints.uea.ac.uk/id/eprint/24689
DOI:	10.1029/2008GB003240

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