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首页> 外文期刊>Journal of oceanography >Ocean Color Satellite Imagery and Shipboard Measurements of Chlorophyll a and Suspended Particulate Matter Distribution in the East China Sea
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Ocean Color Satellite Imagery and Shipboard Measurements of Chlorophyll a and Suspended Particulate Matter Distribution in the East China Sea

机译：东海海洋颜色卫星图像和船上叶绿素a和悬浮颗粒物分布的测量

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Satellite-derived ocean color data of Coastal Zone Color Scanner (CZCS) on board the Nimbus-7 and Ocean Color and Temperature Scanner (OCTS) on board the Advanced Earth Observing Satellite (ADEOS) are jointly used with historical in situ data to examine seasonal and spatial distributions of chlorophyll a (Chl-a) and suspended particulate matter (SPM) concentrations in the East China Sea. Ocean color imagery showed that Chl-a concentrations on the continental shelf were higher than those of the Kuroshio area throughout the year. Satellite-derived Chl-a concentrations are generally in good accordance with historical in situ values during spring through autumn (although no shipboard in situ measurement was conducted at nearshore areas). In contrast, ocean color imagery in winter indicated high Chl-a concentrations (4–10 mg m?3) on the continental shelf where bottom depth was less than 50 m when surface water was turbid (2–72 g m?3 of SPM at surface), while historical in situ values were usually less than 1 mg m?3. This suggests that resuspended bottom sediment due to wind-driven mixing and winter cooling is responsible for the noticeable overestimation of satellite-derived Chl-a concentrations. The algorithm for ocean color needs to be improved urgently for turbid water.
机译：Nimbus-7上的沿海地带颜色扫描仪（CZCS）和高级地球观测卫星（ADEOS）上的海洋颜色和温度扫描仪（OCTS）的卫星海洋颜色数据与历史原位数据结合使用，以检查季节性东海中叶绿素a（Chl-a）和悬浮颗粒物（SPM）浓度的分布和空间分布。海洋彩色图像显示，全年大陆架上的Chl-a浓度高于黑潮地区。卫星衍生的Chl-a浓度通常与春季至秋季的历史原位值非常一致（尽管在近岸地区未进行船上原位测量）。相比之下，冬季的海洋彩色图像表明大陆架上的Chl-a浓度较高（4–10 mg m？3），当地表水混浊时（底部SPM为2–72 gm？3的SPM，底部深度小于50 m表面），而历史原位值通常小于1 mg m？3。这表明由于风驱动混合和冬季降温而使底部沉积物重新悬浮，这是导致卫星衍生的Chl-a浓度明显过高的原因。对于混浊的水，需要紧急改进海洋颜色的算法。

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