基于 Aquarius 卫星数据的孟加拉湾海表盐度分析 王静 1, 储小青 2, 苏楠 1 1, 汪娟 (1., 510275; 2., 510301) 摘要 : 海洋表面盐度 (Sea Surface Salinity, SSS) 是海洋的重要物理和化学参量, SSS 的时空分布与全球大洋环流和水汽循环密切相关 本文基于美国国家航空航天局 (NASA) 发射的 Aquarius 卫星 3 a 的 SSS 遥感数据, 给出了孟加拉湾及其附近海域海表盐度的空间分布特征, 并重点分析了影响孟加拉湾海表盐度变化的可能因素 研究结果从一个侧面说明了利用 Aquarius 卫星遥感观测海洋大尺度盐度变化的可行性 关键词 : 孟加拉湾 ; Aquarius 盐度卫星计划 ; 海表盐度中图分类号 : P731.12 文献标识码 : A 文章编号 : 1000-3096(2015)03-0066-05 doi: 10.11759/hykx20141013002, [1-2],,, (Sea Surface Salinity, SSS) (Sea Surface Temperature, SST), SSS, SMOS(Soil Moisture Ocean Salinity) (NASA) (Aquarius), 2009 11 2011 6 SMOS, Aquarius, Aquarius SAC-D,, 150 km, 30 d, 0.2 psu [3-4], 5 ~22 N, 80 ~95 E, 217.2 10 4 km 2, 2 586 m, ( 1), [5-7],, Aquarius 2011 8 ~2014 9, SSS,, 1 Fig. 1 Bathymetry of the Bay of Bengal : 2014-10-13; : 2015-01-04 : ( 41276108); (XDA11010203) : (1966-),,,,,, : 020-84115833, Email: wjing@mail.sysu.edu.cn 66 / 2015 / 39 / 3
1 资料及处理方法 NASA Aquarius Level 3 Version 3.0 (0 ~25 N, 75 ~100 E), SSS, 1 1 (NOAA) (Ocean Surface Current Analyses- Real time, OSCAR),, 2011 8 ~2014 9, 1 1 2 孟加拉湾海域 SSS 的分布特征分析 2.1 孟加拉湾海域月平均 SSS 分布特征 2, :, 33 psu,, 34 psu 28~35 psu, 1, 29 psu(16 ~20 N, 90 ~93 E ), 15 N, 32 psu, 1 000 mm, 3 000 mm, ( 1), 607 10 9 388 10 9 257 10 9 50 10 9 13 10 9 m 3 [8] 2~5, 4 3,, 5 6,,, 7 (15 N ), 9~12 28 psu, Fig. 2 2 SSS Monthly SSS and ocean surface currents in the Bay of Bengal Marine Sciences / Vol. 39, No. 3 / 2015 67
,,,, 6~9,,, 2.2 孟加拉湾不同季节 SSS 分布特征 2011 8 ~2014 9 Aquarius SSS ( 3) : 31~33 psu, (>33 psu),, [9],,,, 34 psu,,, (<32 psu),, 15 N, 85 E,,, SSS,, Fig. 3 3 SSS Seasonal variation of SSS and ocean surface currents in the Bay of Bengal 2.3 SSS 时空分布特征的影响因素分析 (GRDC) ( 4), 6, 8, SSS ( 5),,,,, 1000 mm, 3000 mm [9],,,,,,, [10],,,,, 10~12 [11] 68 / 2015 / 39 / 3
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Analysis of the sea surface salinity in the Bay of Bengal based on Aquarius data WANG Jing 1, CHU Xiao-qing 2, SU Nan 1, WANG Juan 1 (1. Guangdong Provincial Key Laboratory of Urbanization and Geo-simulation, School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275, China; 2. State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China) Received: Oct., 13, 2014 Key words: the Bay of Bengal; Aquarius/SAC-D; sea surface salinity Abstract: Sea surface salinity (SSS) is an important physical and chemical parameter because its distribution is connected with the general circulation and water cycle in the world. Based on three years of satellite remote sensing data from Aquarius Mission of American National Aeronautics and Space Administration, the spatial and temporal distributions of the SSS in the Bay of Bengal and its adjacent waters are presented in this paper, and the related factors that influence the characteristics of the SSS are further analyzed. This study has demonstrated the feasibility of revealing the large-scale variability of the SSS using the Aquarius data. ( 本文编辑 : 李晓燕 ) 70 / 2015 / 39 / 3