Arctic sea ice concentration from SARAL/AltiKa radiometer

The concentration of sea ice is essential for determining crucial climate factors. Together with sea ice thickness, it is possible to determine significant air-sea fluxes and atmospheric heat transfer. In this study, the SARAL/AltiKa Sea Ice Algorithm is used to determine the monthly sea ice concentration (SIC) in the Arctic (SSIA). For the period from April 2013 to December 2020, data from the dual-frequency microwave radiometer (23.8 GHz and 37 GHz) on the SARAL/AltiKa satellite are used to compute SIC. 

海冰密集度（Sea Ice Concentration）是确定关键气候因子的核心参数。结合海冰厚度，可获取重要的海气通量与大气热输送量。本研究采用SARAL/AltiKa海冰算法，对2013年4月至2020年12月期间北极（SSIA）区域的月度海冰密集度（SIC）进行反演计算。研究所用数据来自SARAL/AltiKa卫星搭载的双频微波辐射计（dual-frequency microwave radiometer，工作频段为23.8 GHz与37 GHz），基于该数据完成海冰密集度的计算。