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Cumulative solar irradiance and potential large-scale sea ice algae distribution off East Antarctica (30oE-150oE)
Citation
Raymond, B and Meiners, K and Fowler, CW and Pasquer, B and Williams, GD and Nicol, S, Cumulative solar irradiance and potential large-scale sea ice algae distribution off East Antarctica (30oE-150oE), Polar Biology, 32, (3) pp. 443-452. ISSN 0722-4060 (2009) [Refereed Article]
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Copyright Statement
The original publication is available at http://www.springerlink.com
Official URL: http://www.springerlink.com
DOI: doi:10.1007/s00300-008-0538-5
Abstract
We present a computational model of the largescale
cumulative light exposure of sea ice in the Southern
Ocean off East Antarctica (30E150E). The model uses
remotely sensed or modelled sea ice concentration, snow
depth over sea ice, and solar irradiance data, and tracks sea
ice motion over the season of interest in order to calculate
the cumulative exposure of the ice field to photosynthetically
active radiation (PAR). Light is the limiting factor to
sea ice algal growth over winter and early spring, and so
the results have implications for the estimation of algal
biomass in East Antarctica. The model results indicate that
highly light-exposed ice is restricted to within a few
degrees of the coast in the eastern part of the study region,
but extends much further north in the 30E100E sector.
The relative influences of sea ice motion, solar flux, and
snow depth variations on interannual variations in model
predictions were evaluated. The model estimates of
cumulative PAR were found to correlate with satellite
estimates of subsequent open-water chlorophyll-a
concentration, consistent with the notion that sea ice algae
can provide inocula for phytoplankton blooms.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | Sea ice, Sea ice motion, Photosynthetically active radiation, Sea ice algae, East Antarctica |
| Research Division: | Environmental Sciences |
| Research Group: | Ecological Applications |
| Research Field: | Ecosystem Function |
| Objective Division: | Environment |
| Objective Group: | Ecosystem Assessment and Management |
| Objective Field: | Ecosystem Assessment and Management of Antarctic and Sub-Antarctic Environments |
| UTAS Author: | Raymond, B (Dr Ben Raymond) |
| UTAS Author: | Meiners, K (Dr Klaus Meiners) |
| UTAS Author: | Pasquer, B (Dr Benedicte Pasquer) |
| UTAS Author: | Williams, GD (Associate Professor Guy Williams) |
| ID Code: | 62452 |
| Year Published: | 2009 |
| Web of Science® Times Cited: | 10 |
| Deposited By: | CRC-Antarctic Climate & Ecosystems |
| Deposited On: | 2010-03-12 |
| Last Modified: | 2011-10-11 |
| Downloads: | 1 View Download Statistics |
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