Remote quantification of Cochlodinium polykrikoides blooms occurring in the East Sea using geostationary ocean color imager (GOCI)
Remote quantification of Cochlodinium polykrikoides blooms occurring in the East Sea using geostationary ocean color imager (GOCI)
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DOI：
10.1016/j.hal.2018.02.006
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发表时间：
2018-03-01
期刊：
影响因子：
6.6
通讯作者：
Park, Young-Je
中科院分区：
文献类型：
--
作者：
Noh, Jae Hoon;Kim, Wonkook;Park, Young-Je
准确、及时地定量分析大面积赤潮的分布，对于应对自然灾害、减少灾害损失和评估赤潮对环境的影响至关重要。虽然各种遥感为基础的量化方法已经提出了HAB的出现以来的海洋颜色卫星传感器，一直没有算法，验证与现场定量测量发生在韩国海域的赤潮。此外，自2010年6月地球同步海洋水色成像仪（GOCI）问世以来，人们迫切需要一种算法，利用其前所未有的观测频率（白天每小时），以更好地跟踪赤潮的空间分布变化。本研究开发了一种新的赤潮定量算法GOCI，可以估计每小时叶绿素a（Chl a）浓度的Coalodinium（Margalefidinium）polykrikoides，韩国海域周围的主要赤潮物种之一。所开发的算法已被验证使用原位叶绿素a测量收集的巡航运动在2013年8月进行，当一个大规模的C polykrikoides绽放摧毁韩国海岸。所提出的算法产生了高相关性（R-2 = 0.92）与现场Chi a测量具有强大的性能，也为高Chl a浓度（300 mg/m（3））在东海地区，通常有一个相对较低的总悬浮颗粒浓度（
Accurate and timely quantification of widespread harmful algal bloom (HAB) distribution is crucial to respond to the natural disaster, minimize the damage, and assess the environmental impact of the event. Although various remote sensing-based quantification approaches have been proposed for HAB since the advent of the ocean color satellite sensor, there have been no algorithms that were validated with in-situ quantitative measurements for the red tide occurring in the Korean seas. Furthermore, since the geostationary ocean color imager (GOCI) became available in June 2010, an algorithm that exploits its unprecedented observation frequency (every hour during the daytime) has been highly demanded to better track the changes in spatial distribution of red tide. This study developed a novel red tide quantification algorithm for GOCI that can estimate hourly chlorophyll-a (Chl a) concentration of Cochlodinium (Margalefidinium) polykrikoides, one of the major red tide species around Korean seas. The developed algorithm has been validated using in-situ Chl a measurements collected from a cruise campaign conducted in August 2013, when a massive C polykrikoides bloom devastated Korean coasts. The proposed algorithm produced a high correlation (R-2 = 0.92) with in-situ Chi a measurements with robust performance also for high Chl a concentration (300 mg/m(3)) in East Sea areas that typically have a relatively low total suspended particle concentration (