The transport of dissolved organic matter by river networks from mountains to the sea: a re-examination of the role of flow across temporal and spatial scales

该项目将促进对各种地表水中有机物的输送、运输和转化感兴趣的一组科学家之间的合作。该小组将在空间和时间尺度上综合数据，并在约翰·韦斯利·鲍威尔分析和综合中心召集一个多学科团队。这项工作将重新评估排放量与DOM浓度和组成之间的基本关系，并将重点放在利用统计技术和建模综合从小型源头流域到大型沿海流域的成熟数据集。可获得的数据代表了一系列时间采样强度，从季节性样本到来自自动取样器的更频繁的样本，最后到来自连续光学传感器的数据。这一综合合作预计将通过探索以前从未尝试过的细节和规模的关键数据集，促进对有机物质运输过程和模式的科学理解。预计这项工作还将使依赖于数据、模型和对河网和河口中营养物质、痕量金属和污染物输送控制的了解的政策和管理界受益。这是一个与科罗拉多州柯林斯堡的美国地质调查局鲍威尔中心联合进行的合成项目。

This project will facilitate the collaboration of a group of scientists interested in delivery, transport and transformation of organic matter in a variety of surface waters. The group will synthesize data across spatial and temporal scales and bring together a multi-disciplinary team at the John Wesley Powell Center for Analysis and Synthesis. The effort will re-evaluate the fundamental relationships between discharge and DOM concentration and composition and focus on synthesizing mature datasets from small headwater basins to large coastal basins using statistical techniques and modeling. Data are available that represent a range of temporal sampling intensities from seasonal samples, to more frequent samples from automated samplers, and finally to data from continuous optical sensors. This synthesis collaboration is expected to advance scientific understanding of the processes and patterns of organic matter transport by exploring key data sets at a level of detail and scale that has not previously been attempted. The work is expected to also benefit the policy and management communities that rely on data, models, and understanding of the controls on nutrient, trace metal, and pollutant transport in river networks and to estuaries. This is a joint synthesis projects with the USGS Powell Center, Fort Collins Colorado.