Atmospheric acidification of mineral aerosols: a source of bioavailable phosphorus for the oceans
Primary productivity of continental and marine ecosystems is often limited or co-limited by phosphorus. Deposition of atmospheric aerosols provides the major external source of phosphorus to marine surface waters. However, only a fraction of deposited aerosol phosphorus is water soluble and availabl...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2011-07-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | http://www.atmos-chem-phys.net/11/6265/2011/acp-11-6265-2011.pdf |
| _version_ | 1818839402132013056 |
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| author | A. Nenes M. D. Krom N. Mihalopoulos P. Van Cappellen Z. Shi A. Bougiatioti P. Zarmpas B. Herut |
| author_facet | A. Nenes M. D. Krom N. Mihalopoulos P. Van Cappellen Z. Shi A. Bougiatioti P. Zarmpas B. Herut |
| author_sort | A. Nenes |
| collection | DOAJ |
| description | Primary productivity of continental and marine ecosystems is often limited or co-limited by phosphorus. Deposition of atmospheric aerosols provides the major external source of phosphorus to marine surface waters. However, only a fraction of deposited aerosol phosphorus is water soluble and available for uptake by phytoplankton. We propose that atmospheric acidification of aerosols is a prime mechanism producing soluble phosphorus from soil-derived minerals. Acid mobilization is expected to be pronounced where polluted and dust-laden air masses mix. Our hypothesis is supported by the soluble compositions and reconstructed pH values for atmospheric particulate matter samples collected over a 5-yr period at Finokalia, Crete. In addition, at least tenfold increase in soluble phosphorus was observed when Saharan soil and dust were acidified in laboratory experiments which simulate atmospheric conditions. Aerosol acidification links bioavailable phosphorus supply to anthropogenic and natural acidic gas emissions, and may be a key regulator of ocean biogeochemistry. |
| first_indexed | 2024-12-19T03:53:43Z |
| format | Article |
| id | doaj.art-6c907e1144cd4d42b110c4b02bd84fbe |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-12-19T03:53:43Z |
| publishDate | 2011-07-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-6c907e1144cd4d42b110c4b02bd84fbe2022-12-21T20:36:52ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242011-07-0111136265627210.5194/acp-11-6265-2011Atmospheric acidification of mineral aerosols: a source of bioavailable phosphorus for the oceansA. NenesM. D. KromN. MihalopoulosP. Van CappellenZ. ShiA. BougiatiotiP. ZarmpasB. HerutPrimary productivity of continental and marine ecosystems is often limited or co-limited by phosphorus. Deposition of atmospheric aerosols provides the major external source of phosphorus to marine surface waters. However, only a fraction of deposited aerosol phosphorus is water soluble and available for uptake by phytoplankton. We propose that atmospheric acidification of aerosols is a prime mechanism producing soluble phosphorus from soil-derived minerals. Acid mobilization is expected to be pronounced where polluted and dust-laden air masses mix. Our hypothesis is supported by the soluble compositions and reconstructed pH values for atmospheric particulate matter samples collected over a 5-yr period at Finokalia, Crete. In addition, at least tenfold increase in soluble phosphorus was observed when Saharan soil and dust were acidified in laboratory experiments which simulate atmospheric conditions. Aerosol acidification links bioavailable phosphorus supply to anthropogenic and natural acidic gas emissions, and may be a key regulator of ocean biogeochemistry.http://www.atmos-chem-phys.net/11/6265/2011/acp-11-6265-2011.pdf |
| spellingShingle | A. Nenes M. D. Krom N. Mihalopoulos P. Van Cappellen Z. Shi A. Bougiatioti P. Zarmpas B. Herut Atmospheric acidification of mineral aerosols: a source of bioavailable phosphorus for the oceans Atmospheric Chemistry and Physics |
| title | Atmospheric acidification of mineral aerosols: a source of bioavailable phosphorus for the oceans |
| title_full | Atmospheric acidification of mineral aerosols: a source of bioavailable phosphorus for the oceans |
| title_fullStr | Atmospheric acidification of mineral aerosols: a source of bioavailable phosphorus for the oceans |
| title_full_unstemmed | Atmospheric acidification of mineral aerosols: a source of bioavailable phosphorus for the oceans |
| title_short | Atmospheric acidification of mineral aerosols: a source of bioavailable phosphorus for the oceans |
| title_sort | atmospheric acidification of mineral aerosols a source of bioavailable phosphorus for the oceans |
| url | http://www.atmos-chem-phys.net/11/6265/2011/acp-11-6265-2011.pdf |
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