海冰表面积雪厚度是冰冻圈和全球气候系统的重要组成部分，在海洋、海冰和大气的能量传输中起着关键的作用。针对目前缺乏南极海冰表面积雪厚度国产卫星遥感数据产品的问题，本文探索应用FY-3B MWRI被动微波亮温数据开展南极海冰表面积雪厚度的遥感反演研究。结果表明：基于2016年FY-3B MWRI 18.7GHz、36.5 GHz垂直极化亮温及海冰密集度数据，采用Comiso03模型反演的积雪厚度结果较Markus98更好，与AWI 2016年部署在威德尔海的浮标（2016S31、2016S37、2016S40）观测的积雪厚度同日同像元对比的偏差为-1.72 cm。FY-3B MWRI反演的2016年南极海冰表面积雪厚度与美国雪冰数据中心发布的GCOM-W1 AMSR-2积雪厚度产品整体上具有较好的一致性（时空平均偏差为-0.11 cm、相关系数为0.90），积累期和稳定期（4月~10月）两者差异较小（时空平均偏差为-0.81 cm，相关系数为0.93），消融期（11月~3月）差异较大（时空平均偏差为2.76 cm，相关系数为0.85），差异主要分布在威德尔海北部和东南极冰边缘区。开展FY-3B MWRI南极海冰表面积雪厚度遥感反演研究可为应用国产卫星数据开展业务化极地冰雪环境动态监测、评估南极海冰变化及其全球效应提供科学数据和技术支撑。

Snow depth on sea ice is an important part of the cryosphere and global climate system, which plays a key role in the energy transfer of the ocean, sea ice and atmosphere. In view of the lack of Chinese domestic satellite data products of the snow depth on Antarctic sea ice, we explored the application of FY-3B MWRI passive microwave brightness temperature data to retrieve snow depth on Antarctic sea ice. Results show that snow depth on Antarctic sea ice retrieved by Comiso03 model is better than Markus98 model based on FY-3B MWRI 18.7 GHz, 36.5 GHz vertical polarization brightness temperature and sea ice concentration data, and the average deviation against with ice mass balance measurements is - 1.72 cm. Snow depth retrieved form FY-3B MWRI was consistent with that of GCOM-W1 AMSR-2 released data product by NSIDC (the average deviation is -0.11 cm and the correlation coefficient is 0.90). The difference between FY-3B-derived snow depth and NSIDC-released AMSR-2 snow depth is small in the snow accumulation and stable period (from April to October), and relative large in the snow melting period (from November to March). These difference mainly distributed in the northern Weddell Sea and margin ice zones. Study on the retrieval of snow depth on Antarctic sea ice using FY-3B MWRI satellite data could provide scientific data and technical support for monitoring polar ice and snow environment and prediction of Antarctic sea ice change with its global effects.