Sea Ice Mass Balances influenced by Ice Shelves (SIMBIS)

该项目的总体目标是提高我们对南极海冰的形成过程和性质以及这些如何受到积雪和血小板冰的影响的理解。血小板冰是由来自冰架空腔的过冷水形成的冰。为了实现这一目标，我们将联合收割机现场测量与卫星观测和数值研究相结合。现场观测将侧重于南极Neumayer III站附近的Atka湾，但也包括在Polarstern号ANT-XIX/6号巡航期间进入南极威德尔海的补充测量。对海冰和冰下血小板冰层的厚度测量将揭示冰架对海冰形成的作用及其季节性。将进行能量平衡和光学测量，以描述海冰及其积雪的热力学和光学特性。为了扩大当地的测量，我们将分析来自卫星的几个数据产品，并致力于新的多传感器海冰分析方法。数值模拟将用于量化区域和环极尺度上雪和血小板冰的质量贡献。

The overall goal of this project is to improve our understanding of formation processes and properties of Antarctic sea ice and how these are influenced by snow cover and platelet ice. Platelet ice is ice that is formed from super-cooled water originating from ice shelf cavities. In order to achieve this goal, we will combine in-situ measurements with satellite observations and numerical studies. In-situ observations will focus on Atka Bay close to Neumayer III station, Antarctic, but also include complementary measurements during the Polarstern cruise ANT-XIX/6 into the Weddell Sea, Antarctic. Thickness measurements of sea-ice and the under-ice platelet-ice layer will reveal the role of ice shelves for sea-ice formation and its seasonality. Energy balance and optical measurements will be performed to describe thermodynamic and optical properties of sea ice and its snow cover. In order to upscale the local measurements, we will analyze several data products from satellites and work towards new multi-sensor approaches for sea-ice analyses. Numerical simulations will be used to quantify the mass contributions from snow and from platelet ice on regional and circumpolar scales.