# General Metadata for Chalgrove Lake YSI Data ## Files Specific metadata for each deployment can be found as text files with the file format of: chalgrove_lake_DDMonthYYYY_metadata.txt Where DDMonthYYY is the date that the deployment ended. ## File Created * 2019-04-12 by KF ## File Modified * 2019-10-31 by KF - added the descriptions of the total algae variables ## 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: * Temperature * Conductivity * pH * ODO * Total Algae ## Measurement Parameters, units, and Variable Names * date.time = the combined date and time of the measurement (YYYY-MM-DD HH:MM:SS) * date = the sampling date reported by the YSI (M/D/YYYY) * time = the sampling time reported by the YSI (HH:MM:SS) * fract_sec = the smapling fractions of a second reported by the YSI * site_name = the site name on the YSI deployment (left blank) * chl_RFU = the chlorophyll concentration (RFU) * chl_conc = the chlorophyll concentration (ug/L) * cond = the conductivity (uS/cm) * nLF_cond = the nLF conductivity (uS/cm) * perc_ODO = the percent oxygen saturation * perc_local_ODO = the percent local oxygen saturation * ODO_conc = the dissolved oxygen concentration (mg/L) * sal = the salinity (psu) * sp_cond = the specific conductivity (uS/cm) * BGA_PC_RFU = the Blue-green algae Phycocyanin concentration (RFU) * BGA_PC_conc = the Blue-green algae Phycocyanin concentration (ug/L) * TDS = the total dissolved solids (mg/L) * pH = the pH * pH mV = the millivolts of the pH sensor * temp = the temperature (dC) * battery = the battery voltage * cable_pwr = the cable power