Optical remote sensing models for estimating suspended particulate matter in the St Lawrence estuary (OSPLE)

该提案是关于表征空间和时间分布的悬浮颗粒物（SPM）在圣劳伦斯河口（SLE）使用光学模型的基础上，在可见光-近红外光谱区域内的原位和星载测量。该方案将：（1）调查一年中不同时期SLE表面沃茨的SPM浓度和光学特性（水中和卫星导出）之间的关系，（2）确定不同的SPM属性（成分、尺寸分布）如何解释SPM-光学关系的时空变化，（3）研究气候变化如何与卫星导出的SPM的年际和长期模式相联系。 SPM动力学的研究将提供重要的信息，以更好地了解沉积物的运输，水的能见度，几种污染物的命运，浮游生物的生产力，以及潜在的气候对这些过程的影响。该计划的成果将帮助决策者和环境管理人员改善该地区生态服务和人类活动的功能和可持续性。 这一方案的主要成果将是一个成本相对较低的监测工具，用于以卫星数据为基础绘制SLE SPM的时间和空间变异性。这些SPM估计将允许计算加拿大社会的重要科学产品，以及与水质、侵蚀、渔业和有毒物质运输有关的产品。

This proposal is about characterizing spatial and temporal distribution of suspended particulate matter (SPM) in the Saint Lawrence Estuary (SLE) using optical models based on in situ and spaceborne measurements within the visible-near IR spectral region. This program will: (1) investigate relationships between SPM concentration and optical properties (in-water and satellite derived) of surface SLE waters during different periods of the year, (2) determine how different SPM attributes (composition, size distribution) explain time-space variability of SPM-optical relationships, and (3) examine how climate variability is linked to inter-annual and long-term patterns of satellite-derived SPM. The study of SPM dynamics will provide important information to better understand sediment transport, water visibility, fate of several pollutants, plankton productivity, and potential climate impacts on these processes. The results of this program will help decision makers and environmental managers to improve functioning and sustainability of ecological services and human activities in the region. The main outcome of this program will be a relatively low cost monitoring tool for mapping temporal and spatial variability of SPM in the SLE and based on satellite-based data. These SPM estimates will allow the calculation of important scientific products for the Canadian society and related to water quality, erosion, fisheries, and transport of toxic substances.