Arctic sea ice thickness variations from CryoSat-2 satellite altimetry data

作     者：Feng XIAO Shengkai ZHANG Jiaxing LI Tong GENG Yue XUAN Fei LI Feng XIAO;Shengkai ZHANG;Jiaxing LI;Tong GENG;Yue XUAN;Fei LI

作者机构：Chinese Antarctic Center of Surveying and MappingWuhan UniversityWuhan 430079China 

出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)

年 卷 期：2021年第64卷第7期

页      面：1080-1089页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 0708[理学-地球物理学] 0705[理学-地理学] 070501[理学-自然地理学] 0704[理学-天文学] 

基　　金：supported by the National Key Research and Development Program of China(Grant No.2017YFA0603104) the National Natural Science Foundation of China(Grant Nos.41531069,41706216) the LIESMARS Special Research Funding 

主　　题：CryoSat-2 Arctic sea ice Thickness Global change 

摘      要：Arctic sea ice plays an important role in Earth s climate and environmental *** ice thickness is one of the most important sea ice *** obtaining the sea ice thickness and its changes has great significance to Arctic and global change *** altimeters can be used to derive long-term and large-scale changes in sea ice *** leads detection is vital in sea ice thickness estimation by using satellite *** leads detection methods are compared with remote sensing images,and results show that the detection method that uses waveform parameters can obtain improved *** model for the conversion of freeboard to thickness is optimized by considering the incomplete penetration of snow for radar *** derive the estimates of the Arctic sea ice thickness for November 2010 to December 2019 by using the CryoSat-2 altimetry *** sea ice thickness from the IceBridge and draft data from the upward-looking sonar are used to validate our thickness *** show that the accuracy of our thickness estimates is within 0.2 *** in the Arctic sea ice thickness are analyzed using the PIOMAS model and air and sea surface temperatures.A sharp increase in sea ice thickness is found in 2014.