利用海洋2B卫星数据反演南极海冰表面积雪厚度  

Retrieval of Snow Depth on Antarctic Sea Ice Using HY-2B Satellite Data

作　　者：肖泽辉 季青[1,2] 庞小平 闫忠男[1] XIAO Zehui;JI Qing;PANG Xiaoping;YAN Zhongnan(Chinese Antarctic Center of Surveying and Mapping,Wuhan University,Wuhan 430079,China;Key Laboratory of Polar Surveying and Mapping Science,Ministry of Natural Resources,Wuhan 430079,China)

机构地区：[1]武汉大学中国南极测绘研究中心,湖北武汉430079 [2]自然资源部极地测绘重点实验室,湖北武汉430079

出　　处：《测绘地理信息》2024年第6期64-68,共5页Journal of Geomatics

基　　金：国家自然科学基金(42076238);中央高校基本业务经费(2042022kf0018)

摘　　要：海冰及其表面积雪厚度是大气和海洋间的能量循环和物质平衡的重要因子,是对气候环境变化的敏感指示器。本文尝试利用国产海洋2B卫星(HY-2B)数据开展南极海冰表面积雪厚度遥感反演的研究。结果表明:基于2018年11月至2019年1月我国第35次南极科学考察“雪龙船”走航观测的积雪厚度数据,Comiso03积雪厚度遥感反演模型相对于Markus98模型和Shen22模型反演的南极海冰表面积雪厚度精度最好,时空平均偏差为-1.88 cm。基于搭载在HY-2B上的扫描微波辐射计(scanning microwave radiometer,SMR)所反演的南极海冰表面积雪厚度与基于搭载在地球水环境变动监测卫星(Global Change Observation Mission1st-Water,GCOM-W1)上的先进微波扫描辐射计(the advanced microwave scanning radiometer-2, AMSR-2)发布的积雪厚度产品(Comiso03模型)具有较好的一致性,两者间的差异主要发生在消融期,在空间分布上的差异主要集中在南极印度洋扇区和西太平洋扇区。利用HY-2B SMR数据反演南极海冰表面积雪厚度的研究可为应用国产海洋卫星系列数据开展长时序南极海冰及其表面积雪的变化研究提供重要的数据和技术支撑。Sea ice and its surface snow depth are important factors of energy cycle and mass balance between atmosphere and ocean,and sensitive indicators of climate and environmental change.This study attempts to apply Chinese HY-2B Satellite Data to retrieve snow depth on Antarctic Sea ice.Results show that the remote sensing retrieval model of Comioso03 has the best accuracy with a spatial-temporal averaged deviation of−1.88 cm compared with that of Markus98 model and Shen22 model against the snow measurements during the 35th Antarctic Scientific Expedition of China from the November 2018 to January 2019.The HY-2B SMR snow depth on Antarctic sea ice is in good agreement with the GCOMW1 AMSR-2 snow depth product(Comisto03 model).The difference between them mainly occurs in the sea ice ablation period and concentrate in the Antarctic Indian Ocean sector and the Western Pacific Ocean sector.Research on the remote sensing retrieval of snow depth on Antarctic Sea ice based on HY-2B SMR data could provide important data and technical support for the application of Chinese marine satellite series data to monitor long-term Antarctic Sea ice and snow changes.

关 键 词：积雪厚度 海冰 HY-2B 被动微波遥感 南极 

分 类 号：P715.7[天文地球—海洋科学] P731.15P941.61