North Temperate Lakes LTER Estimated winter inputs of stream water and groundwater to primary study lakes 1982 - 2014

This data set integrates and summarizes daily surface and groundwater inputs to primary study lakes, using model estimates from a data-driven USGS hydrologic model (Hunt et al. in preparation), and ice phenology data (number of days since ice-on). Powers et al. (2017) used these data to estimate upper and lower bounds for exogenous chemical inputs to the lakes during winter. For a given lake and winter year, cumulative surface water and groundwater inputs were calculated across the ice cover period. For each lake, this data set reports the mean, maximum, and minimum winter water inputs observed across years, in units of water volume, % of average lake volume, and volume per winter day. Sampling Frequency: 1 per lake, with multiple summary values reported (i.e., mean, min, max). Number of sites: 5本数据集整合并汇总了主要研究湖泊的每日地表与地下水输入量，采用数据驱动型美国地质调查局（USGS）水文模型的估算结果（Hunt等，待刊），以及冰物候数据（自湖泊封冻起的天数）。Powers等人(2017)曾利用该数据集估算冬季湖泊外源化学输入的上下界。针对特定湖泊与冬季年份，研究人员计算了冰封期内累计的地表水与地下水输入量。本数据集针对每个湖泊，报告了其多年观测得到的冬季水体输入量的均值、最大值与最小值，单位涵盖水体体积、湖泊平均体积占比，以及单日冬季输入体积。采样频次：每个湖泊采样1次，同时报告多种汇总统计量（即均值、最小值、最大值）。站点数量：5个