Estimation of Thin Ice Thickness and Detection of Fast Ice from SSM/I Data in the Antarctic Ocean
Estimation of Thin Ice Thickness and Detection of Fast Ice from SSM/I Data in the Antarctic Ocean
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DOI：
10.1175/jtech2113.1
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发表时间：
2007-10
影响因子：
2.2
通讯作者：
T. Tamura;K. Ohshima;T. Markus;D. Cavalieri;S. Nihashi;N. Hirasawa
中科院分区：
文献类型：
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作者：
T. Tamura;K. Ohshima;T. Markus;D. Cavalieri;S. Nihashi;N. Hirasawa
摘要 南极沿海冰间湖是高海冰产生和稠水形成的重要区域，因此对它们的检测（包括薄冰厚度的估计）至关重要。在本文中，作者提出了一种算法，利用南极海洋中的国防气象卫星计划（DMSP）特殊传感器微波成像仪（SSM/I）数据来估计薄冰厚度并检测固定冰。 <0.2 m 海冰厚度的检测和估计基于 SSM/I 85 GHz 和 37 GHz 极化比（PR85 和 PR37），通过与高级甚高分辨率辐射计 (AVHRR) 数据估计的海冰厚度进行比较。讨论了受大气水蒸气影响的数据的排除。由于薄冰和固定冰（特别是冰架、冰川舌、冰山和陆地冰）具有相似的 PR 特征，因此在将薄冰算法应用于沿海冰间湖之前，开发了一种方案来分离这两种表面类型。概率是...
Abstract Antarctic coastal polynyas are important areas of high sea ice production and dense water formation, and thus their detection including an estimate of thin ice thickness is essential. In this paper, the authors propose an algorithm that estimates thin ice thickness and detects fast ice using Defense Meteorological Satellite Program (DMSP) Special Sensor Microwave Imager (SSM/I) data in the Antarctic Ocean. Detection and estimation of sea ice thicknesses of <0.2 m are based on the SSM/I 85- and 37-GHz polarization ratios (PR85 and PR37) through a comparison with sea ice thicknesses estimated from the Advanced Very High Resolution Radiometer (AVHRR) data. The exclusion of data affected by atmospheric water vapor is discussed. Because thin ice and fast ice (specifically ice shelves, glacier tongues, icebergs, and landfast ice) have similar PR signatures, a scheme was developed to separate these two surface types before the application of the thin ice algorithm to coastal polynyas. The probability th...