High-frequency water quality data for Gwynns Falls, Baisman Run, and Pond Branch, Baltimore County and Baltimore City, MD, USA

This resource includes water quality sensor data measured at three stations along the main stem of the Gwynns Falls watershed, spanning an urban to rural gradient of development from Baltimore City to Baltimore County, MD, USA. In addition, two forested reference sites, Baisman Run and Pond Branch at Oregon Ridge, and one urban site, Dead Run (tributary to Gwynns Falls), are instrumented in Baltimore County, MD, USA. Sensor data are collected at a 5-minute frequency by YSI EXO2 sondes that include temperature, specific conductance, turbidity, dissolved oxygen, and pH. In addition, s::can spectrolyser v3 sondes are planned for deployment to measure nitrate-nitrogen and dissolved organic carbon at a 15-minute frequency at 5 of the sites. A Seabird SUNA is currently measuring nitrate-nitrogen at Dead Run at a 30-minute frequency. All Dead Run data are provided in a separate linked resource. High frequency data are collected for the purpose of evaluating event-based water quality /discharge behavior, as a complement to weekly grab-sample stream chemistry data that have been collected by the Baltimore Ecosystem Study since 1998. The six sites are co-located with USGS stream gages. Data are telemetered to UMBC. This data set is part of the Baltimore Social-Environmental Collaborative Urban Integrated Field Laboratory supported by Department of Energy as well as the Critical Zone Collaborative Network supported by NSF.

本资源包含在马里兰州巴尔的摩市至巴尔的摩郡的主要流域主干线上的三个监测站所测得的水质传感器数据，涵盖了从城市至乡村的发展梯度。此外，在巴尔的摩郡，还包括了两个森林参照站点，即位于俄勒冈山脊的贝斯曼溪和池塘溪，以及一个城市站点，即死河（格温尼斯溪的支流）。通过YSI EXO2遥测仪收集的数据以5分钟为频率，包括温度、电导率、浊度、溶解氧和pH值。另外，计划部署s::can光谱仪v3遥测仪，以15分钟为频率，在5个站点测量硝酸盐氮和溶解有机碳。目前，Seabird SUNA正在以30分钟为频率在死河测量硝酸盐氮。所有死河数据均以独立链接资源提供。高频率数据的收集旨在评估基于事件的水质/排放行为，作为自1998年以来由巴尔的摩生态系统研究收集的每周抓取样本溪流化学数据的补充。这六个站点均与USGS溪流流量计相邻。数据通过遥测传输至UMBC。该数据集是能源部支持的巴尔的摩社会-环境协作城市综合野外实验室的一部分，同时也是由美国国家科学基金会支持的临界带合作网络的一部分。