TY - JOUR
T1 - Changing atmospheric acidity as a modulator of nutrient deposition and ocean biogeochemistry
AU - Baker, Alex R.
AU - Kanakidou, Maria
AU - Nenes, Athanasios
AU - Myriokefalitakis, Stelios
AU - Croot, Peter L.
AU - Duce, Robert A.
AU - Gao, Yuan
AU - Guieu, Cécile
AU - Ito, Akinori
AU - Jickells, Tim D.
AU - Mahowald, Natalie M.
AU - Middag, Rob
AU - Perron, Morgane M.G.
AU - Sarin, Manmohan M.
AU - Shelley, Rachel
AU - Turner, David R.
N1 - Funding Information:
P.L.C. acknowledges that his aerosol research is supported in part by a research grant from Science Foundation Ireland (SFI) under grant number 13/RC/2092 and cofunded under the European Regional Development Fund and by iCRAG industry partners. A.I. acknowledges JSPS KAKENHI grant number 20H04329 and Integrated Research Program for Advancing Climate Models (TOUGOU) grant number JPMXD0717935715 from the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. We also acknowledge support by the project PyroTRACH (ERC-2016-COG) funded from H2020-EU.1.1.–Excellent Science–European Research Council (ERC), project ID 726165 and from the European Union Horizon 2020 project FORCeS under grant agreement number 821205, and from an Alexander von Humboldt Research Award to M.K
Publisher Copyright:
Copyright © 2021 The Authors, some rights reserved.
PY - 2021/7
Y1 - 2021/7
N2 - Anthropogenic emissions to the atmosphere have increased the flux of nutrients, especially nitrogen, to the ocean, but they have also altered the acidity of aerosol, cloud water, and precipitation over much of the marine atmosphere. For nitrogen, acidity-driven changes in chemical speciation result in altered partitioning between the gas and particulate phases that subsequently affect long-range transport. Other important nutrients, notably iron and phosphorus, are affected, because their soluble fractions increase upon exposure to acidic environments during atmospheric transport. These changes affect the magnitude, distribution, and deposition mode of individual nutrients supplied to the ocean, the extent to which nutrient deposition interacts with the sea surface microlayer during its passage into bulk seawater, and the relative abundances of soluble nutrients in atmospheric deposition. Atmospheric acidity change therefore affects ecosystem composition, in addition to overall marine productivity, and these effects will continue to evolve with changing anthropogenic emissions in the future.
AB - Anthropogenic emissions to the atmosphere have increased the flux of nutrients, especially nitrogen, to the ocean, but they have also altered the acidity of aerosol, cloud water, and precipitation over much of the marine atmosphere. For nitrogen, acidity-driven changes in chemical speciation result in altered partitioning between the gas and particulate phases that subsequently affect long-range transport. Other important nutrients, notably iron and phosphorus, are affected, because their soluble fractions increase upon exposure to acidic environments during atmospheric transport. These changes affect the magnitude, distribution, and deposition mode of individual nutrients supplied to the ocean, the extent to which nutrient deposition interacts with the sea surface microlayer during its passage into bulk seawater, and the relative abundances of soluble nutrients in atmospheric deposition. Atmospheric acidity change therefore affects ecosystem composition, in addition to overall marine productivity, and these effects will continue to evolve with changing anthropogenic emissions in the future.
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U2 - 10.1126/sciadv.abd8800
DO - 10.1126/sciadv.abd8800
M3 - Review article
C2 - 34233872
AN - SCOPUS:85109459271
SN - 2375-2548
VL - 7
JO - Science advances
JF - Science advances
IS - 28
M1 - eabd8800
ER -