Field data for seasonal synoptic sampling of 100 urban streams in Portland, Oregon (USA), 2023-2024

This dataset contains field measurements taken during water sampling from 100 urban stream locations in the greater Portland, Oregon (USA) metropolitan area. Field collection took place during four synoptic sampling events (July 2023, October 2023, January/February 2024, and May 2024) to capture spatial and seasonal variation in stream conditions (specific conductivity, water temperature, dissolved oxygen, pH, ORP). Filtered stream samples were analyzed for dissolved organic carbon concentration and characteristics, available in a separate dataset. These data were collected as part of the Carbon in Urban Rivers Biogeochemistry (CURB) Project. Detailed field data and site data are published separately and can be linked using the “curbid” and “synoptic_event” columns in each dataset.

本数据集收录了美国俄勒冈州波特兰大都市区100处城市溪流点位开展水样采集期间获取的野外实测数据。野外采样工作依托四次同步采样事件完成，分别为2023年7月、2023年10月、2024年1月/2月及2024年5月，旨在捕捉溪流环境的空间与季节变化，监测指标涵盖比电导率、水温、溶解氧、pH值以及氧化还原电位（ORP）。研究人员针对过滤后的溪流样品开展了溶解有机碳浓度与特征分析，相关数据收录于另一独立数据集。本批数据为城市河流生物地球化学碳（Carbon in Urban Rivers Biogeochemistry，缩写CURB）项目的采集成果。详细野外数据与点位数据已另行发表，可通过各数据集内的“curbid”与“synoptic_event”字段进行关联匹配。