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
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
复制标题
日本北海道近海卫星海洋颜色遥感反演叶绿素a浓度和有色溶解有机物吸收的评价
DOI：
10.1007/s10872-022-00633-w
复制
发表时间：
2022
影响因子：
2.3
通讯作者：
Suzuki Koji
中科院分区：
文献类型：
--
作者：
Isada Tomonori;Hooker Stanford B.;Taniuchi Yukiko;Suzuki Koji
沿海生态系统在地球化学循环中很重要，因为它们为化学元素和化合物在物理环境和生物体之间流动提供了许多途径。生物和非生物相互作用的空间和时间尺度确定了沿海区的内在动态和进行高分辨率调查的要求。利用在北海道沿海沃茨收集的匹配数据，本文评估了从卫星观测中推导叶绿素（Chl）浓度和有色溶解有机物（CDOM）吸收（）作为波长（）函数的性能。日本宇宙航空研究开发机构（JAXA）的第二代全球成像仪（SGLI）具有250米的空间分辨率，与其他卫星海洋颜色（OC）传感器进行了比较。我们的研究结果表明，标准SGLI OC 4算法与530 nm波段提供了最好的性能叶绿素，和端元分析（EMA）技术提高了估计。现场辐射测量数据和卫星检索之间的总体差异表明，仍然存在其他挑战，特别是在紫外和蓝色光谱领域，这对研究CDOM和沿海沃茨有害藻类水华非常有用。为了满足高质量遥感数据的应用，大气校正的改进是一个可能的研究领域，其中额外的成就将有利于光学复杂的沿海沃茨的卫星观测。
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)aconcentration and colored dissolved organic matter (CDOM) absorption () as a function of wavelength () 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 Chlaretrievals, and the end-member analysis (EMA) technique improved the estimation of. 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.