Tasman Sea biological response to dust storm events during the austral spring of 2009

Gabric, A. J. and Cropp, R. and McTainsh, G. and Butler, H. and Johnson, B. M. and O'Loingsigh, T. and van Tran, Dien (2016) Tasman Sea biological response to dust storm events during the austral spring of 2009. Marine and Freshwater Research, 67 (8). pp. 1090-1102. ISSN 1323-1650

Abstract

During the austral spring of 2009 several significant dust storms occurred in SE Australia including the Red Dawn event in late September. Estimates of 2.5 Mt total suspended particulate sediment lost off the Australian coast for the 3000 km long dust plume, make it the largest off-continent loss of soil ever reported. Much of this material was transported over the coastline of New South Wales and adjacent Tasman Sea. Previous satellite-based analyses of the biological response of Tasman Sea waters to dust-derived nutrients are equivocal or have observed no response. Satellite-derived surface chlorophyll concentrations in the southern Tasman during this period are well above the climatological mean, with positive anomalies as high as 0.5mgm-3. Dust transport simulations indicate strong deposition to the ocean surface, which during the Red Dawn event was enhanced by heavy precipitation from an intense low pressure system. Cloud processing of the dust aerosol may have enhanced iron bioavailability for phytoplankton uptake.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences
Date Deposited: 31 May 2016 07:25
Last Modified: 02 Mar 2018 05:11
Uncontrolled Keywords: Australia, iron, nutrient, phytoplankton
Fields of Research : 05 Environmental Sciences > 0502 Environmental Science and Management > 050204 Environmental Impact Assessment
04 Earth Sciences > 0405 Oceanography > 040503 Physical Oceanography
Socio-Economic Objective: D Environment > 96 Environment > 9611 Physical and Chemical Conditions of Water > 961104 Physical and Chemical Conditions of Water in Marine Environments
D Environment > 96 Environment > 9602 Atmosphere and Weather > 960299 Atmosphere and Weather not elsewhere classified
Identification Number or DOI: 10.1071/MF14321
URI: http://eprints.usq.edu.au/id/eprint/27172

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