Abstract This study aimed to investigate the capability of the two-stream radiative transfer model 2SeaColor for the simultaneous retrieval of Chlorophyll-a (Chla), Suspended Particulate Matter (SPM) and Colored Dissolved Organic Matter (CDOM) concentrations from remote sensing measurements under various conditions (i.e., solar zenith angle values (SZAs) and water turbidity levels). For this evaluation, a time series of diurnal in-situ hyperspectral measurements of remote sensing reflectance (Rrs) concurrent with in-situ measured Chla and SPM concentrations between 2008 and 2010 by the NIOZ jetty station (the NJS), located in the Dutch part of the Wadden Sea, was used. Validation of the model retrievals against in-situ measurements showed an acceptable accuracy (Chla: R2 = 0.80 and RMSE = 2.98 [mg m−3]; SPM: R2 = 0.89 and RMSE = 2.53 [g m−3]) with good agreement between the temporal trends of measured and retrieved concentration values over multiple years. However, the model inversion results yielded less good estimates at SZA > 60° during winter. Furthermore, the effect of the tide on the variation of daily time series of Chla and SPM concentrations was analyzed. At the particular NJS location, the tidal effects on the concentrations of SPM and Chla were found to be small. The capability of the 2SeaColor model to retrieve reliable estimates, and the favorable location of the NJS, which is little influenced by tidal phase variations, contribute to a better understanding of the long-term variability of Chla and SPM concentrations. The results of this study may support the ongoing efforts on Sentinel-3 Ocean and Land Color Instrument (OLCI) calibration and validation at the Dutch Wadden Sea.

中文翻译：

---

使用瓦登海原位高光谱测量的时间序列遥感水成分浓度

摘要 本研究旨在研究双流辐射传输模型 2SeaColor 同时反演各种遥感测量中叶绿素 a (Chla)、悬浮颗粒物 (SPM) 和有色溶解有机物 (CDOM) 浓度的能力。条件（即太阳天顶角值 (SZAs) 和水浊度水平）。对于本次评估，位于荷兰部分的 NIOZ 码头站 (NJS) 在 2008 年至 2010 年期间对遥感反射率 (Rrs) 的昼夜原位高光谱测量与原位测量的 Chla 和 SPM 浓度同时进行了时间序列瓦登海，被使用。针对原位测量对模型检索的验证显示出可接受的准确性（Chla：R2 = 0.80 和 RMSE = 2.98 [mg m−3]；SPM：R2 = 0.89 和 RMSE = 2。53 [g m-3]) 与多年测量和检索的浓度值的时间趋势之间具有良好的一致性。然而，模型反演结果在冬季 SZA > 60° 产生不太好的估计。此外，还分析了潮汐对 Chla 和 SPM 浓度每日时间序列变化的影响。在特定的 NJS 位置，发现潮汐对 SPM 和 Chla 浓度的影响很小。2SeaColor 模型检索可靠估计值的能力，以及 NJS 的有利位置，几乎不受潮汐相位变化的影响，有助于更好地了解 Chla 和 SPM 浓度的长期变化。