Towards high resolution estimates of East Antarctic pack ice thickness ...
The area of the Southern Ocean covered by sea ice is relatively well described by a longterm time series of satellite observations spanning over 35 years. Throughout the seasonal cycle, Antarctic sea-ice cover varies between approximately 3 x 10‚ÄövÖ‚àÇ km¬¨‚⧠at the end of summer to approximately...
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| Format: | Thesis |
| Language: | unknown |
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University Of Tasmania
2023
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| Online Access: | https://dx.doi.org/10.25959/23240135.v1 https://figshare.utas.edu.au/articles/thesis/Towards_high_resolution_estimates_of_East_Antarctic_pack_ice_thickness/23240135/1 |
| Summary: | The area of the Southern Ocean covered by sea ice is relatively well described by a longterm time series of satellite observations spanning over 35 years. Throughout the seasonal cycle, Antarctic sea-ice cover varies between approximately 3 x 10‚ÄövÖ‚àÇ km¬¨‚⧠at the end of summer to approximately 20 x 10‚ÄövÖ‚àÇ km¬¨‚⧠during winter. This has profound implications for ocean-atmosphere heat and momentum exchange and also for global oceanic circulation induced by sea-ice production and melt. However, the thickness distribution of Antarctic sea-ice is poorly described. Without detailed knowledge of the distribution of sea-ice thickness (and hence volume) it is difficult to assess the magnitude of its influence, and its feedback within the ocean-ice-atmosphere system. Current estimates of the sea-ice thickness distribution derived from satellite-based altimetry rely on empirical models describing the relationship between sea-ice topography, snow depth and sea-ice draft. The input to these empirical models ... |
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