Surface temperature, surface oxygen, water clarity, water chemistry and phytoplankton chlorophyll a data from Blelham Tarn, 2019-2020

This is part of an ongoing long-term monitoring dataset of surface temperature, surface oxygen, water clarity, water chemistry and phytoplankton chlorophyll a from fortnightly sampling at Blelham Tarn in Cumbria, England that began in 1945 for some variables. The data have been collected by the UK Centre for Ecology & Hydrology (UKCEH). The data available to download comprise surface temperature (TEMP) in degree Celsius, surface oxygen saturation (OXYG) in % air-saturation, Secchi depth (SECC) in metres, alkalinity (ALKA) in µg per litre as CaCO3 and pH. Ammonium (NH4N), nitrate (NO3N), soluble reactive phosphate (PO4P), total phosphorus (TOTP), dissolved reactive silicon expressed as SiO2 (SIO2) and phytoplankton chlorophyll a (TOCA) are all given in µg per litre. Water samples are based on a sample integrated from 0 to 5 m. All data are from January 2019 until the end of 2020.

本数据集系对英格兰库姆布里郡布莱姆湖表面温度、表面氧气含量、水体透明度、水质化学成分以及浮游植物叶绿素a浓度进行长期监测的持续数据集的一部分。该监测始于1945年，针对某些变量。数据由英国生态与水文中心（UKCEH）收集。可供下载的数据包括表面温度（TEMP，单位：摄氏度）、表面氧气饱和度（OXYG，单位：%空气饱和度）、塞奇深度（SECC，单位：米）、碱性（ALKA，单位：每升微克碳酸钙µg/L）和pH值。铵（NH4N）、硝酸盐（NO3N）、可溶性反应性磷酸盐（PO4P）、总磷（TOTP）、溶解性反应性硅（以SiO2表示，SIO2）以及浮游植物叶绿素a（TOCA）的浓度均以每升微克表示（µg/L）。水体样本基于0至5米的采样综合。所有数据均涵盖自2019年1月至2020年底。