The likelihood of observing dust-stimulated phytoplankton growth in waters proximal to the Australian continent
We develop a tool to assist in identifying a link between naturally occurring aeolian dust deposition and phytoplankton response in the ocean. Rather than examining a single, or small number of dust deposition events, we take a climatological approach to estimate the likelihood of observing a defini...
Published in: | Journal of Marine Systems |
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Language: | English |
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Online Access: | https://doi.org/10.1016/j.jmarsys.2013.02.013 |
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ftunivscoast:usc:9854 2023-05-15T18:24:52+02:00 The likelihood of observing dust-stimulated phytoplankton growth in waters proximal to the Australian continent Cropp, R A Gabric, A J Levasseur, M McTainsh, G H Bowie, A Hassler, C S Law, C S McGowan, H A Tindale, N W Viscarra Rossel, R A 2013 https://doi.org/10.1016/j.jmarsys.2013.02.013 eng eng Elsevier BV usc:9854 URN:ISSN: 0924-7963 Copyright © 2013. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ CC-BY-NC-ND FoR 0405 (Oceanography) dust-phytoplankton link aeolian dust iron limitation Southern Ocean Tasman Sea Great Barrier Reef Journal Article 2013 ftunivscoast https://doi.org/10.1016/j.jmarsys.2013.02.013 2020-03-02T23:25:35Z We develop a tool to assist in identifying a link between naturally occurring aeolian dust deposition and phytoplankton response in the ocean. Rather than examining a single, or small number of dust deposition events, we take a climatological approach to estimate the likelihood of observing a definitive link between dust deposition and a phytoplankton bloom for the oceans proximal to the Australian continent. We use a dust storm index (DSI) to determine dust entrainment in the Lake Eyre Basin (LEB) and an ensemble of modelled atmospheric trajectories of dust transport from the basin, the major dust source in Australia. Deposition into the ocean is computed as a function of distance from the LEB source and the local over-ocean precipitation. The upper ocean’s receptivity to nutrients, including dust-borne iron, is defined in terms of time-dependent, monthly climatological fields for light, mixed layer depth and chlorophyll concentration relative to the climatological monthly maximum. The resultant likelihood of a dust-phytoplankton link being observed is then mapped as a function of space and time. Our results suggest that the Southern Ocean (north of 45°S), the North West Shelf, and Great Barrier Reef are ocean regions where a rapid biological response to dust inputs is most likely to be observed. Conversely, due to asynchrony between deposition and ocean receptivity, direct causal links appear unlikely to be observed in the Tasman Sea and Southern Ocean south of 45°S. Article in Journal/Newspaper Southern Ocean University of the Sunshine Coast, Queensland, Australia: COAST Research Database Southern Ocean Journal of Marine Systems 117-118 43 52 |
institution |
Open Polar |
collection |
University of the Sunshine Coast, Queensland, Australia: COAST Research Database |
op_collection_id |
ftunivscoast |
language |
English |
topic |
FoR 0405 (Oceanography) dust-phytoplankton link aeolian dust iron limitation Southern Ocean Tasman Sea Great Barrier Reef |
spellingShingle |
FoR 0405 (Oceanography) dust-phytoplankton link aeolian dust iron limitation Southern Ocean Tasman Sea Great Barrier Reef Cropp, R A Gabric, A J Levasseur, M McTainsh, G H Bowie, A Hassler, C S Law, C S McGowan, H A Tindale, N W Viscarra Rossel, R A The likelihood of observing dust-stimulated phytoplankton growth in waters proximal to the Australian continent |
topic_facet |
FoR 0405 (Oceanography) dust-phytoplankton link aeolian dust iron limitation Southern Ocean Tasman Sea Great Barrier Reef |
description |
We develop a tool to assist in identifying a link between naturally occurring aeolian dust deposition and phytoplankton response in the ocean. Rather than examining a single, or small number of dust deposition events, we take a climatological approach to estimate the likelihood of observing a definitive link between dust deposition and a phytoplankton bloom for the oceans proximal to the Australian continent. We use a dust storm index (DSI) to determine dust entrainment in the Lake Eyre Basin (LEB) and an ensemble of modelled atmospheric trajectories of dust transport from the basin, the major dust source in Australia. Deposition into the ocean is computed as a function of distance from the LEB source and the local over-ocean precipitation. The upper ocean’s receptivity to nutrients, including dust-borne iron, is defined in terms of time-dependent, monthly climatological fields for light, mixed layer depth and chlorophyll concentration relative to the climatological monthly maximum. The resultant likelihood of a dust-phytoplankton link being observed is then mapped as a function of space and time. Our results suggest that the Southern Ocean (north of 45°S), the North West Shelf, and Great Barrier Reef are ocean regions where a rapid biological response to dust inputs is most likely to be observed. Conversely, due to asynchrony between deposition and ocean receptivity, direct causal links appear unlikely to be observed in the Tasman Sea and Southern Ocean south of 45°S. |
format |
Article in Journal/Newspaper |
author |
Cropp, R A Gabric, A J Levasseur, M McTainsh, G H Bowie, A Hassler, C S Law, C S McGowan, H A Tindale, N W Viscarra Rossel, R A |
author_facet |
Cropp, R A Gabric, A J Levasseur, M McTainsh, G H Bowie, A Hassler, C S Law, C S McGowan, H A Tindale, N W Viscarra Rossel, R A |
author_sort |
Cropp, R A |
title |
The likelihood of observing dust-stimulated phytoplankton growth in waters proximal to the Australian continent |
title_short |
The likelihood of observing dust-stimulated phytoplankton growth in waters proximal to the Australian continent |
title_full |
The likelihood of observing dust-stimulated phytoplankton growth in waters proximal to the Australian continent |
title_fullStr |
The likelihood of observing dust-stimulated phytoplankton growth in waters proximal to the Australian continent |
title_full_unstemmed |
The likelihood of observing dust-stimulated phytoplankton growth in waters proximal to the Australian continent |
title_sort |
likelihood of observing dust-stimulated phytoplankton growth in waters proximal to the australian continent |
publisher |
Elsevier BV |
publishDate |
2013 |
url |
https://doi.org/10.1016/j.jmarsys.2013.02.013 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
usc:9854 URN:ISSN: 0924-7963 |
op_rights |
Copyright © 2013. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.jmarsys.2013.02.013 |
container_title |
Journal of Marine Systems |
container_volume |
117-118 |
container_start_page |
43 |
op_container_end_page |
52 |
_version_ |
1766205850577272832 |