First Dynamic Model of Dissolved Organic Carbon Derived Directly from High-Frequency Observations through Contiguous Storms
First Dynamic Model of Dissolved Organic Carbon Derived Directly from High-Frequency Observations through Contiguous Storms
复制标题
DOI：
10.1021/es503506m
复制
发表时间：
2014-11-18
影响因子：
11.4
通讯作者：
Tych, Wlodek
中科院分区：
文献类型：
--
作者：
Jones, Timothy D.;Chappell, Nick A.;Tych, Wlodek
溶解有机碳（DOC）输出流直接来自高频率（亚小时）的观测采样在一个定期的时间间隔，通过连续风暴的第一个动态模型。最优模型，确定使用最近开发的RIVC算法，捕获DOC负荷的快速动态从15分钟监测降雨与高模拟效率和约束的不确定性与二阶（双通道）结构。在研究的四个河源盆地的DOC出口大部分与更快的水文通道（也模拟平行），并很快耗尽在较慢的路径。随着环境温度的升高，DOC动员的延迟变得明显。这些功能的组件途径进行了量化的动态响应特性（DRCs）确定的RIVC。考虑到亚小时DOC浓度数据的可用性越来越高，该模型和相关的DRC旨在作为更好地了解风暴相关DOC动态和可预测性的基础。
The first dynamic model of dissolved organic Carbon (DOC) export in streams derived directly from high frequency (subhourly) observations sampled at a regular interval through contiguous storms is presented. The optimal model, identified using the recently developed RIVC algorithm, captured the rapid dynamics of DOC load from 15 min monitored rainfall with high simulation efficiencies and constrained uncertainty with a second-order (two-pathway) structure. Most of the DOC export in the four headwater basins studied was associated with the faster hydrometric pathway (also modeled in parallel), and was soon exhausted in the slower pathway. A delay in the DOC mobilization became apparent as the ambient temperatures increased. These features of the component pathways were quantified in the dynamic response characteristics (DRCs) identified by RIVC. The model and associated DRCs are intended as a foundation for a better understanding of storm-related DOC dynamics and predictability, given the increasing availability of subhourly DOC concentration data.