Plynlimon research catchment hydrochemistry (2016-2019)

This dataset includes stream and rainfall hydrochemistry of the Plynlimon research catchments in Mid Wales. The data cover the period from March 2016 to March 2019. Sampling was carried out fortnightly from March 2016 to July 2017. From August 2017 to November 2018 stream samples were collected every four weeks and the rain sample every two weeks. From December 2018 onwards all samples were collected every four weeks. Data are presented for major anions and cations, pH, conductivity, alkalinity, in-situ measurements of water temperature and stream flow for the six stream locations, and air temperature and volume for the rainfall sites. Stream samples were taken using a grab technique and filtered in the field. Rain samples were collected using bulk precipitation collectors. Fieldwork was carried out by CEH members of staff trained in the fieldwork techniques required. Chemical analysis was carried out by qualified CEH chemists at laboratories at CEH Lancaster and CEH Bangor. The Plynlimon research catchments lie within the headwaters of the River Severn and the River Wye in the uplands of mid-Wales. Intensive and long-term monitoring within the catchments underpins a wealth of hydrological and hydro-chemical research. Monitoring is funded by the Centre for Ecology & Hydrology, and is ongoing since 1968.

本数据集涵盖了位于威尔士中部的普林利蒙研究流域的径流和降雨水化学数据。数据时间跨度为2016年3月至2019年3月。从2016年3月至2017年7月，采样工作每两周进行一次。自2017年8月至2018年11月，径流样品每四周采集一次，降雨样品每两周采集一次。自2018年12月起，所有样品均每四周采集一次。数据展示了主要阴离子和阳离子、pH值、电导率、碱度，以及六个流域位置的现场水温和水流以及降雨地点的气温和体积。径流样品采用抓取技术采集并在现场过滤。降雨样品使用大量降水收集器收集。野外工作由受过相关野外技术培训的CEH工作人员执行。化学分析由CEH合格的化学家在CEH兰开斯特和CEH班戈的实验室进行。普林利蒙研究流域位于威尔士中部上流域的塞文河和韦河源头。流域内进行的密集和长期监测为水文和水化学研究提供了丰富的数据支持。监测工作由生态与水文中心资助，自1968年起一直持续进行。