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| IMPACT OF OCEANIC SOURCES OF BIOGENIC SULFUR ON SULFATE AEROSOL CONCENTRATIONS AT MAWSON, ANTARCTICA |
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| Author(s): PROSPERO JM, SAVOIE DL, SALTZMAN ES, LARSEN R |
| Source: NATURE Volume: 350 Issue: 6315 Pages: 221-223 Published: MAR 21 1991 |
| Times Cited: 86 References: 28 |
| Abstract: Sulphate is the dominant aerosol species in the Antarctic atmosphere 1,2 and an important constituent in Antarctic snow and ice 3. Various sources have been suggested for Antarctic non-sea-salt sulphate (n.s.s. SO4(2-)): volcanic emissions, stratospheric injection, pollutants transported from the low latitudes and biogenic dimethylsulphide (DMS) from the ocean 1,2. Although the oceanic source is now believed to be especially important, there has been no strong chemical evidence directly linking oceanic DMS with the Antarctic n.s.s. SO4(2-) concentrations. Here we present extended measurements from the Antarctic for both n.s.s. SO4(2-) and methanesulphonate (MSA), an oxidation product of DMS. Both species have a very strong seasonal cycle with a maximum in the austral summer; this cycle parallels that of the oceanic biogenic sulphur producers, thereby suggesting a strong link between the Antarctic atmospheric sulphur cycle and biological processes in the Southern Ocean. |
| Document Type: Article |
| Language: English |
| Reprint Address: PROSPERO, JM (reprint author), UNIV MIAMI, ROSENSTIEL SCH MARINE & ATMOSPHER SCI, MAC, 4600 RICKENBACKER CAUSEWAY, MIAMI, FL 33149 USA |
Addresses:
1. US DOE, ENVIRONM MEASUREMENTS LAB, NEW YORK, NY 10014 USA |
| Publisher: MACMILLAN MAGAZINES LTD, 4 LITTLE ESSEX STREET, LONDON, ENGLAND WC2R 3LF |
| Subject Category: Multidisciplinary Sciences |
| IDS Number: FC779 |
| ISSN: 0028-0836 |
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