Interpretation of SHEBA Data Using Numerical Models

本研究将研究海冰带内的海洋混合层环流。浮冰上的这些开口使得夏季太阳辐射的更大比例被吸收，从而加速了冰的融化。在冬季，铅使海水显著冷却，从而促进了冰的形成。在对铅进行深入研究期间获得的细分辨率示巴水文数据集以及遥感数据将用于指导这项工作。建模将基于现有的三维对流模型，并在此基础上增加一个复杂的冰-海洋子模型。高分辨率的研究将考察开放水馏分、混合层温度和冰厚之间的相互作用。数值研究将检查冬季和夏季的情况。这项工作将有助于理解近地表热收支，并将有助于全球环流模式中铅过程的参数化。

This research will study the ocean mixed-layer circulation within sea-ice leads. These openings in the pack ice allow a greater proportion of the summer-time solar radiation to be absorbed which results in enhanced ice melt. In winter, leads allow significant cooling of the ocean waters which promotes enhanced ice formation. The finely-resolved SHEBA hydrographic data set, taken during intensive studies on leads, as well as remote sensing data will be used to guide the work. Modeling will be based on an existing 3-dimensional convection model to which will be added a sophisticated ice-ocean submodel. High resolution studies would examine the interactions between open water fraction, mixed layer temperature, and ice thickness. Numerical studies would examine both winter and summer conditions. This work will contribute to the understanding of the near-surface heat budget and will aid in parameterization of lead processes in global circulation models.