High-frequency water quality data for Dead Run, Baltimore County, MD, USA

This resource includes water quality sensor data measured at multiple locations in Dead Run, Baltimore County, Maryland. Stream temperature, specific conductance, turbidity, dissolved oxygen, pH, and nitrate data are collected for multiple purposes including (1) computation of watershed-scale export mass fluxes; (2) evaluation of event-based water quality /discharge behavior, and (2) stream metabolism calculations. Data are collected using various instruments including (1) YSI 6920 V2 sondes outfitted with temperature, specific conductance, and dissolved oxygen sensors; (2) YSI EXO2 sondes outfitted with temperature, specific conductance, dissolved oxygen and pH sensors; (3) Onset Inc. U24-001 conductivity/ temperature and U26-001 dissolved oxygen data loggers; and (4) SUNA nitrate-nitrogen analyzers. Data are collected at a 5-minute interval (SUNAs at a 30-minute interval) and either telemetered to UMBC (YSI sondes and SUNAs) or downloaded manually every 60 days (Onset loggers). The instruments are co-located with either USGS or UMBC stream gaging stations. This data set is part of the Urban Critical Zone Cluster in the NSF Critical Zone Collaborative Network and is associated with the Gwynns Falls sensor data set supported by Department of Energy. Dead Run data are backlogged to 2010 and are being reviewed and uploaded in ~2023-2024.

本资源涵盖了在马里兰州巴尔的摩县Dead Run的多处地点收集的水质传感器数据。数据包括河流温度、比电导率、浑浊度、溶解氧、pH值和硝酸盐，旨在服务于多个目的，包括：（1）计算流域尺度出口质量通量；（2）评估基于事件的水质/排放行为；（3）河流代谢计算。数据通过多种仪器收集，包括：（1）配备温度、比电导率和溶解氧传感器的YSI 6920 V2探测器；（2）配备温度、比电导率、溶解氧和pH传感器的YSI EXO2探测器；（3）Onset Inc. U24-001电导率/温度和U26-001溶解氧数据记录仪；（4）SUNA硝酸盐-氮分析仪。数据以5分钟间隔收集（SUNA为30分钟间隔），并通过遥测传输至UMBC（YSI探测器和SUNA）或每60天手动下载（Onset记录仪）。仪器与USGS或UMBC河流测流站协同放置。该数据集是NSF临界区协作网络中的城市临界区集群的一部分，并与由能源部支持的金恩斯瀑布传感器数据集相关联。Dead Run数据回溯至2010年，并将在2023-2024年期间进行审查和上传。