Evaluation of retrieving chlorophyll a concentration and colored dissolved organic matter absorption from satellite ocean color remote sensing in the coastal waters of Hokkaido, Japan

被引:7
|
作者
Isada, Tomonori [1 ]
Hooker, Stanford B. [2 ]
Taniuchi, Yukiko [3 ]
Suzuki, Koji [4 ]
机构
[1] Hokkaido Univ, Field Sci Ctr Northern Biosphere, Akkeshi Marine Stn, Akkeshi, Hokkaido 0881113, Japan
[2] NASA Goddard Space Flight Ctr, Ocean Ecol Lab Code 616-2, Greenbelt, MD 20771 USA
[3] Japan Fisheries Res & Educ Agcy, Fisheries Resources Inst, 116 Katsurakoi, Kushiro, Hokkaido 0850802, Japan
[4] Hokkaido Univ, Fac Environm Earth Sci, Kita Ku, North 10 West 5, Sapporo, Hokkaido 0600810, Japan
关键词
SGLI/GCOM-C; Ocean color; Chlorophyll; CDOM; Coastal waters; Spectral range; MSI/Sentinel; 2; ATMOSPHERIC CORRECTION ALGORITHMS; WESTERN NORTH PACIFIC; OPTICAL-PROPERTIES; DYNAMICS; REFLECTANCE; SEA; VALIDATION; SPECTRA; OYASHIO; SEAWIFS;
D O I
10.1007/s10872-022-00633-w
中图分类号
P7 [海洋学];
学科分类号
0707 ;
摘要
Coastal ecosystems are important in biogeochemical cycles, because they provide many pathways for chemical elements and compounds to flow between the physical environment and living organisms. The spatial and temporal scales of the biotic and abiotic interactions establish the inherent dynamics of the coastal zone and the requirement for high-resolution investigations. Using match-up data collected in Hokkaido coastal waters, the study herein evaluated the performance of deriving chlorophyll (Chl) a concentration and colored dissolved organic matter (CDOM) absorption (a(CDOM)) as a function of wavelength (lambda) from satellite observations. The Japanese Aerospace Exploration Agency (JAXA) Second generation GLobal Imager (SGLI), which has 250 m spatial resolution, was compared with other satellite ocean color (OC) sensors. Our results show that the standard SGLI OC4 algorithm with the 530 nm band provided the best performance for Chl a retrievals, and the end-member analysis (EMA) technique improved the estimation of a(CDOM)(.lambda). Overall differences between in situ radiometric data and satellite retrievals suggest that additional challenges remain, especially in the ultraviolet and blue spectral domains which are useful for studying CDOM and harmful algae blooms in coastal waters. To fulfill applications wherein high-quality remote sensing data are required, the improvement of the atmospheric correction is a likely research area where additional accomplishment will be beneficial for satellite observations of optically complex coastal waters.
引用
收藏
页码:263 / 276
页数:14
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