YSI Data from Chalgrove Lake; 2019-04-04 - 2019-04-25
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## Files Specific metadata for each deployment can be found as text files with the file format of: chalgrove_lake_DDMonthYYYY_metadata.txt<br> <br> Where DDMonthYYY is the date that the deployment ended. ## File Created * 2019-04-25 by KF ## Description These data are from a YSI EXO2 multiparameter sonde deployed at approximatly 0.7 m in Chalgrove Lake (37.242983 N, -78.464116 W) in approximately 4 m of water. ## Sonde Specifics The specific sensors and SNs deployed are on the metadata specific to each deployment but generally the sonde has:<br> <br> * Temperature<br> * Conductivity<br> * pH<br> * ODO<br> * Total Algae<br> <br> ## Measurement Parameters, units, and Variable Names * date.time = the combined date and time of the measurement (YYYY-MM-DD HH:MM:SS)<br> * date = the sampling date reported by the YSI (M/D/YYYY)<br> * time = the sampling time reported by the YSI (HH:MM:SS)<br> * fract_sec = the smapling fractions of a second reported by the YSI<br> * site_name = the site name on the YSI deployment (left blank)<br> * cond = the conductivity (uS/cm)<br> * nLF_cond = the nLF conductivity (uS/cm)<br> * perc_ODO = the percent oxygen saturation<br> * perc_local_ODO = the percent local oxygen saturation<br> * ODO_conc = the dissolved oxygen concentration (mg/L)<br> * sal = the salinity (psu)<br> * sp_cond = the specific conductivity (uS/cm)<br> * TDS = the total dissolved solids (mg/L)<br> * pH = the pH<br> * pH mV = the millivolts of the pH sensor<br> * temp = the temperature (dC)<br> * battery = the battery voltage<br> * cable_pwr = the cable power
元数据文件说明：各部署任务的专属元数据可通过命名格式为`chalgrove_lake_DDMonthYYYY_metadata.txt`的文本文件获取，其中`DDMonthYYYY`代表该部署任务的结束日期。 文件创建信息：本数据集文件创建于2019年4月25日，创建者为KF。 数据集描述：本数据集源自部署于查尔格罗夫湖（Chalgrove Lake）的YSI EXO2多参数水质探头（YSI EXO2 multiparameter sonde），该探头布设点位水深约4米，探头位于水下约0.7米处，点位坐标为北纬37.242983°，西经78.464116°。 探头详情：各部署任务所用的具体传感器及序列号（Serial Number，SN）详见对应部署的专属元数据文件。本类探头常规搭载的传感器类型包括： * 温度 * 电导率 * pH值 * ODO（光学溶解氧） * 总藻类 测量参数、单位及变量名： * date.time：测量组合日期时间，格式为YYYY-MM-DD HH:MM:SS * date：YSI探头记录的采样日期，格式为M/D/YYYY * time：YSI探头记录的采样时间，格式为HH:MM:SS * fract_sec：YSI探头记录的采样秒分数 * site_name：YSI探头部署时配置的站点名称（留空） * cond：电导率，单位为微西门子/厘米（uS/cm） * nLF_cond：nLF电导率，单位为微西门子/厘米（uS/cm） * perc_ODO：氧气饱和度百分比 * perc_local_ODO：本地氧气饱和度百分比 * ODO_conc：溶解氧浓度，单位为毫克/升（mg/L） * sal：盐度，单位为实用盐度单位（psu） * sp_cond：比电导率，单位为微西门子/厘米（uS/cm） * TDS：总溶解固体，单位为毫克/升（mg/L） * pH：pH值 * pH mV：pH传感器的毫伏输出值 * temp：水温，单位为dC * battery：电池电压 * cable_pwr：电缆供电
