Dataset for: Diurnal patterns in solute concentrations measured with in situ UV-Vis sensors: natural fluctuations or artefacts?

This dataset contains high-resolution (10-minute interval) data for nitrate, dissolved organic carbon, precipitation and discharge at four measurement stations (NF, SHA, TTP, OUT) in the South West Mau, Kenya. This data was used for the analysis of diurnal patterns in nitrate and dissolved organic carbon concentrations. The zipped folder contains the following files and data: Calibration.csv: site = name of measuring site date = date and time of grab sample (yyyy-mm-dd hh:mm:ss) DOC = dissolved organic carbon concentration in grab sample (mg C/L) nitrate = nitrate concenctration in grab sample (mg N/L) Files with suffix ".ts.csv" (time series data from 1-11-2014 to 31-10-2019; prefix indicates measuring site): date = date and time of measurement (yyyy-mm-dd hh:mm:ss) nit.raw = nitrate concentration measured by sensor (mg N/L) nit.flag = indication of validity of nitrate measurement (if NA, measurement is valid; for explanation of flags, see supplement of Jacobs et al. 2018) nit.proc = processed nitrate concentration (mg N/L) nit.bg = background concentration of nitrate (48-h moving median; mg N/L) nit.patt = deviation from background concentration of nitrate (nit.proc minus nit.bg; mg N/L) doc.raw = dissolved organic carbon concentration measured by sensor (mg C/L) doc.flag = indication of validity of dissolved organic carbon measurement (if NA, measurement is valid) doc.proc = processed dissolved organic carbon concentration (mg C/L) doc.bg = background concentration of dissolved organic carbon (48-h moving median; mg C/L) doc.patt = deviation from background concentration of dissolved organic carbon (doc.proc minus doc.bg; mg C/L) p = precipitation (mm/10 mins) q = discharge (m³/s) sensor = serial number of sensor Files with suffix ".exp.csv" (data for sensor comparison experiment from 5-9-2017 to 1-12-2017; prefix indicates measuring site): date = date and time of measurement (yyyy-mm-dd hh:mm:ss) prec = precipitation (mm/10 mins) nit.orig = processed nitrate concentration measured by fixed sensor (mg N/L) nit.bg.orig = background concentration of nitrate measured by fixed sensor (48-h moving median; mg N/L) nit.patt.orig = deviation from background concentration of nitrate measured by fixed sensor (nit.orig minus nit.bg.orig; mg N/L) nit.dup = processed nitrate concentration measured by mobile sensor (mg N/L) nit.bg.dup = background concentration of nitrate measured by mobile sensor (48-h moving median; mg N/L) nit.patt.dup = deviation from background concentration of nitrate measured by mobile sensor (nit.dup minus nit.bg.dup; mg N/L) doc.orig = processed dissolved organic carbon concentration measured by fixed sensor (mg C/L) doc.bg.orig = background concentration of dissolved organic carbonmeasured by fixed sensor (48-h moving median; mg C/L) doc.patt.orig = deviation from background concentration of dissolved organic carbonmeasured by fixed sensor (doc.orig minus doc.bg.orig; mg C/L) doc.dup = processed dissolved organic carbonconcentration measured by mobile sensor (mg C/L) doc.bg.dup = background concentration of dissolved organic carbonmeasured by mobile sensor (48-h moving median; mg C/L) doc.patt.dup = deviation from background concentration of dissolved organic carbon measured by mobile sensor (doc.dup minus doc.bg.dup; mg C/L) set = experimental treatment本数据集包含肯尼亚西南莫伊地区4个监测站点（NF、SHA、TTP、OUT）的硝酸盐（nitrate）、溶解性有机碳（dissolved organic carbon, DOC）、降水与径流的高分辨率数据，时间间隔为10分钟。该数据集曾用于分析硝酸盐与溶解性有机碳浓度的日变化模式。 压缩包内包含以下文件与数据： Calibration.csv： site：监测站点名称 date：瞬时采样的日期与时间（格式为yyyy-mm-dd hh:mm:ss） DOC：瞬时采样中的溶解性有机碳浓度（单位：mg C/L） nitrate：瞬时采样中的硝酸盐浓度（单位：mg N/L） 后缀为.ts.csv的文件（时间序列数据，覆盖时段为2014年11月1日至2019年10月31日，文件名前缀代表监测站点）： date：监测日期与时间（格式为yyyy-mm-dd hh:mm:ss） nit.raw：传感器测得的硝酸盐浓度（单位：mg N/L） nit.flag：硝酸盐监测结果的有效性标识（若为NA则代表监测有效；标识详细说明可参考Jacobs et al. 2018的补充材料） nit.proc：经过处理的硝酸盐浓度（单位：mg N/L） nit.bg：硝酸盐本底浓度（采用48小时移动中位数计算，单位：mg N/L） nit.patt：硝酸盐浓度相对于本底的偏差（nit.proc减去nit.bg，单位：mg N/L） doc.raw：传感器测得的溶解性有机碳浓度（单位：mg C/L） doc.flag：溶解性有机碳监测结果的有效性标识（若为NA则代表监测有效） doc.proc：经过处理的溶解性有机碳浓度（单位：mg C/L） doc.bg：溶解性有机碳本底浓度（采用48小时移动中位数计算，单位：mg C/L） doc.patt：溶解性有机碳浓度相对于本底的偏差（doc.proc减去doc.bg，单位：mg C/L） p：降水量（单位：mm/10分钟） q：径流量（单位：m³/s） sensor：传感器序列号 后缀为.exp.csv的文件（传感器对比试验数据，覆盖时段为2017年9月5日至2017年12月1日，文件名前缀代表监测站点）： date：监测日期与时间（格式为yyyy-mm-dd hh:mm:ss） prec：降水量（单位：mm/10分钟） nit.orig：固定传感器测得的经过处理的硝酸盐浓度（单位：mg N/L） nit.bg.orig：固定传感器测得的硝酸盐本底浓度（采用48小时移动中位数计算，单位：mg N/L） nit.patt.orig：固定传感器测得的硝酸盐浓度相对于本底的偏差（nit.orig减去nit.bg.orig，单位：mg N/L） nit.dup：移动传感器测得的经过处理的硝酸盐浓度（单位：mg N/L） nit.bg.dup：移动传感器测得的硝酸盐本底浓度（采用48小时移动中位数计算，单位：mg N/L） nit.patt.dup：移动传感器测得的硝酸盐浓度相对于本底的偏差（nit.dup减去nit.bg.dup，单位：mg N/L） doc.orig：固定传感器测得的经过处理的溶解性有机碳浓度（单位：mg C/L） doc.bg.orig：固定传感器测得的溶解性有机碳本底浓度（采用48小时移动中位数计算，单位：mg C/L） doc.patt.orig：固定传感器测得的溶解性有机碳浓度相对于本底的偏差（doc.orig减去doc.bg.orig，单位：mg C/L） doc.dup：移动传感器测得的经过处理的溶解性有机碳浓度（单位：mg C/L） doc.bg.dup：移动传感器测得的溶解性有机碳本底浓度（采用48小时移动中位数计算，单位：mg C/L） doc.patt.dup：移动传感器测得的溶解性有机碳浓度相对于本底的偏差（doc.dup减去doc.bg.dup，单位：mg C/L） set：试验处理组