Derived annual statistics of rainfall, streamflow and acidity for the Nant Trawsnant catchment, Llyn Brianne, Mid Wales, UK. (1982 to 2012)

This dataset comprises of derived annual statistics for measures of rainfall, streamflow, temperature and stream acidity (pH) for a stream, draining a small, approximately 1.2 square kilometres, upland conifer catchment. The stream, Nant Trawsnant, drains into the Llyn Brianne reservoir, Powys, United Kingdom. The data are for a 31 year period covering 1st April 1982 to 1st April 2012. The streamflow and acidity data are derived from 15 minute resolution observations throughout the calendar year 2013 from associated stream gauging and water quality stations on the Nant Trawsnant. The monthly rainfall measures presented, were derived from local rain gauges. The monthly temperature measures presented were derived from observations at a weather station near Talgarth, Powys. Routines within the Lancaster University Computer-Aided Program for Time-series Analysis and Identification of Noisy Systems (CAPTAIN) Toolbox for Matlab were used to develop a dynamic model of these data. These models were then used to simulate the 31-year record for which monthly statistics were derived. The statistics were derived to develop greater understanding of the controls on the long-term dynamics of aquatic biodiversity observed by other researchers in this stream. The work was part of the Diversity in Upland River Ecosystem Service Sustainability (DURESS) project, NERC grant NE/J014826/1. Members of staff from the Lancaster Environment Centre, Lancaster University installed, maintained and downloaded the stream gauging and water quality stations and also carried out statistical analysis of the data. Full details about this dataset can be found at https://doi.org/10.5285/b085a784-0e16-4174-b208-465a8f43c8c8

本数据集包含针对降雨量、河流流量、温度以及河流酸度（pH值）的年度统计数据，所述数据源自一个面积约1.2平方公里的山地针叶林集水区内的河流。该河流名为Nant Trawsnant，其流入英国Powys地区的Llyn Brianne水库。数据记录涵盖了1982年4月1日至2012年4月1日的31年期间。河流流量和酸度数据来源于2013年全年的15分钟分辨率观测数据，这些数据由Nant Trawsnant河流的流量测量站和水质监测站提供。所呈现的月降雨量数据是通过当地降雨计获得的。月平均温度数据则来源于Talgarth附近的气象站观测。本研究采用了兰卡斯特大学计算机辅助时间序列分析与噪声系统识别工具箱（CAPTAIN）中的程序，以构建这些数据的动态模型。随后，利用这些模型模拟了31年的记录，从而得出月度统计数据。这些统计数据的生成旨在加深对水生生物多样性长期动态控制机制的理解，该研究属于“山区河流生态系统服务可持续性”（DURESS）项目的一部分，该项目获得了英国自然环境研究委员会（NERC）的资助编号NE/J014826/1。来自兰卡斯特大学兰卡斯特环境中心的员工负责安装、维护和下载河流流量和水质监测站，并执行了数据统计分析。关于本数据集的详细信息，请参阅https://doi.org/10.5285/b085a784-0e16-4174-b208-465a8f43c8c8。