Share Email Print
cover

Proceedings Paper • new

Quality weighting in gridding Aquarius sea surface salinity
Author(s): Yanyan Li; Qing Dong; Yongzheng Ren; Yiqiang Hu; Fanping Kong; Zi Yin
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Aquarius is a satellite designed for measuring sea surface salinity (SSS). The Aquarius measurements may be influenced by marine environmental factors. The result is the inconsistency of data quality under different conditions. Although the data qualities have been considered in some previous studies, they have only been used for data screening. Base on this, a quality weighting method is proposed in this paper. The key differences between our method and traditional method, is way of weighting the data. In the present paper, both distance and data quality are considered in the weighting process. After the weight is determined, the weighted average fitting (WAF) method is used to calculate the grid SSS value. Then weekly 0.25°×0.25°gridded SSS fields between 40°S and 40°N are generated, covering the period from September 2011 through May 2015. The error statistics are calculated and the result shows that the root-mean squared difference (RMSD) is about 0.18 psu, which can improve the accuracy by about 31%. Therefore the method proposed in this paper could improve the precise of SSS filed with higher temporal and spatial resolution significantly.

Paper Details

Date Published: 14 October 2019
PDF: 6 pages
Proc. SPIE 11150, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2019, 111501T (14 October 2019); doi: 10.1117/12.2535580
Show Author Affiliations
Yanyan Li, Aerospace Information Research Institute (China)
Univ. of Chinese Academy of Sciences (China)
Qing Dong, Aerospace Information Research Institute (China)
Yongzheng Ren, Aerospace Information Research Institute (China)
Hainan Key Lab. of Earth Observation (China)
Yiqiang Hu, Aerospace Information Research Institute (China)
Tianjin Geological Engineering Investigation Institute (China)
Fanping Kong, Aerospace Information Research Institute (China)
Univ. of Chinese Academy of Sciences (China)
Zi Yin, Aerospace Information Research Institute (China)
Univ. of Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 11150:
Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2019
Charles R. Bostater Jr.; Xavier Neyt; Françoise Viallefont-Robinet, Editor(s)

© SPIE. Terms of Use
Back to Top