Improving High-Frequency Marine Gravity Anomaly Recovery: The Efficacy of SWOT Wide-Swath Altimetry

doi:10.1109/LGRS.2024.3431694

IOCAS-IR > 海洋环流与波动重点实验室

	Improving High-Frequency Marine Gravity Anomaly Recovery: The Efficacy of SWOT Wide-Swath Altimetry
	Wang, Jianbo 1,2; Xu, Yongsheng3,4,5 ; Zhang, Qingjun 6; Wang, Yan 7; Zhu, Chengcheng 8; Xu, Huan 9; Zhang, Liqiang 6
	2024
发表期刊	IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
ISSN	1545-598X
卷号	21 页码:5
通讯作者	Xu, Yongsheng([email protected])
摘要	For the traditional 1-D nadir altimetry measurements, the spatial resolution of the sea surface height (SSH) measurements is restricted. However, the new wide-swath altimeters like Surface Water and Ocean Topography (SWOT) are anticipated to enhance spatial resolution and thereby improve the accuracy of derived marine gravity anomalies, particularly in high-frequency signals. The study investigates the efficacy of L2 KaRIn Beta data of SWOT in recovering high-frequency marine gravity signals. CryoSat-2 data was used for comparison. The first-order difference of shipborne gravity data along ship tracks was used as the reference to investigate the high-frequency accuracy of gravity derived from SWOT and CryoSat-2 at different point spacings, respectively. The research results show that compared to CryoSat-2 satellite data, when the point spacing is less than 2 km or greater than 6 km, the accuracy improvement is relatively small, less than 3.0%. However, within the 2-4 km range, the accuracy improvement ranges from 6.8% to 7.9%. When the point spacing is between 4 and 6 km, the accuracy improvement ranges from 5.0% to 6.7%. Therefore, when the point spacing is greater than 2 km and less than 6 km, the accuracy improvement is obvious. The results show that SWOT wide-range altimeter satellite has obviously improved the accuracy of traditional altimeter gravity inversion in high frequency (especially in the range of 2-6 km).
关键词	Gravity Accuracy Satellites Altimetry Surface topography Sea surface Noise CryoSat-2 data inverse Vening-Meinesz (IVM) method marine gravity in high frequency shipborne gravimetry SWOT L2 KaRIn beta data
DOI	10.1109/LGRS.2024.3431694
收录类别	SCI
语种	英语
资助项目	Laoshan Laboratory Science and Technology Innovation Projects[LSKJ202201406-2]; National Natural Science Foundation of China (NSFC)-Shandong Joint Fund Key Project[U22A20587]; NSFC[42304001]; Shandong Provincial Natural Science Foundation[ZR2023QD032]
WOS研究方向	Geochemistry & Geophysics ; Engineering ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Geochemistry & Geophysics ; Engineering, Electrical & Electronic ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:001283693700008
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/196528
专题	海洋环流与波动重点实验室
通讯作者	Xu, Yongsheng
作者单位	1.Jiangsu Ocean Univ, Sch Marine Technol & Geomat, Lianyungang 222005, Peoples R China 2.Jiangsu Marine Resources Dev Inst, Lianyungang 222005, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Ctr Ocean Mega Sci, Lab Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 4.Lab Ocean & Climate Dynam, Laoshan Lab, Qingdao 266237, Peoples R China 5.Univ Chinese Acad Sci, Coll Marine Sci, Beijing 100049, Peoples R China 6.Chinese Acad Space Technol, Inst Remote Sensing Satellite, Beijing 100094, Peoples R China 7.Jiangsu Ocean Univ, Sch Marine Technol & Geomat, Lianyungang 222005, Peoples R China 8.Shandong Jianzhu Univ, Sch Surveying & Geoinformat, Jinan 250101, Peoples R China 9.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jianbo,Xu, Yongsheng,Zhang, Qingjun,et al. Improving High-Frequency Marine Gravity Anomaly Recovery: The Efficacy of SWOT Wide-Swath Altimetry[J]. IEEE GEOSCIENCE AND REMOTE SENSING LETTERS,2024,21:5.
APA	Wang, Jianbo.,Xu, Yongsheng.,Zhang, Qingjun.,Wang, Yan.,Zhu, Chengcheng.,...&Zhang, Liqiang.(2024).Improving High-Frequency Marine Gravity Anomaly Recovery: The Efficacy of SWOT Wide-Swath Altimetry.IEEE GEOSCIENCE AND REMOTE SENSING LETTERS,21,5.
MLA	Wang, Jianbo,et al."Improving High-Frequency Marine Gravity Anomaly Recovery: The Efficacy of SWOT Wide-Swath Altimetry".IEEE GEOSCIENCE AND REMOTE SENSING LETTERS 21(2024):5.