uKEOPS2_xxx_1m_V03 contain the data for the ctd number xxx, up cast bined every meter the file contains 30 columns The first line of each column is variable name Column 1: Cruise Column 2: Station (as name_CTDnumber) Column 3: Type Column 4: yyyy-mm-ddThh:mm:ss (UTC) Column 5: hh:mm:ss (UTC) Column 6: Latitude [degrees_north] (degree decimal) Column 7: Longitude [degrees_east] (degree decimal) Column 8: Bot. Depth [m] Column 9: Pression [dB] Column 10: Temperature [°C] Column 11: Potential Temperature Column 12: Salinity Column 13: Potential Density Column 14: Oxygen [ml/l] Column 15: Oxygen [umol/kg] Column 16: Fluorescence [µg/L] Column 17: Fluorescence_calib [µg/L] see below for method Column 18: Fluorescence_code see below see below for method Column 19: wetCDOM [mg/m3] Column 20: upoly0 Column 21: Nitrates_calib ([µmol/L]see below for method Column 22: Nitrates_code see below for method Column 23: par Column 24: spar Column 25: cpar Column 26: xmiss [%] Column 27: POC_calib [µM] see below for method Column 28: POC_code see below for method Column 29: v4 Column 30: fluorescence_calib_2015 [µg/L] see below for method ***************************************************** calibration of CTD sensors ***************************************************** CTD-Fluorescence was calibrated by comparison with in situ measurement of total chlorophyll a (µg/L) from Niskin bottles. A regression was used to convert the fluorescence values to an actual chl-a concentration. As daylight fluorescence profiles are known to be affected by quenching, only values collected during night (18:00 pm to 06:00 am) were included in the analysis to determine the regression equation. The regression equation applied is: Fluorescence_calib=Fluorescence*1.2935+0.2886 NOTE : the linear calibration produce a significant offset. a new new non linear calibration has been processed. column 81 and below for methode CTD-Nitrates (upoly0) was calibrated by comparison with in situ measurement of Nitrates (µmol/L) from Niskin bottles. The following regression was used to convert the upoly0 values to an actual Nitrates concentration: Nitrates_calib=upoly0*0.8958779+3.94843938 Particulate Organic Carbon (POC) The transmissometer (Xmiss) has been initially calibrated to give 0 to 100% full scale deflection. Data from CTD were compared to in situ measurement of POC from Niskin bottles. The following regression was used to convert the Xmiss (%) values to an actual POC concentration (µmol/L): POC_calib=LN(Xmiss/100)*(-100.74)+0.6401 Fluorescence_code (column 18), Nitrates_code (column 22), and POC_code (column 28) contain quality code of the respective variables, with 0=validated data and 9=wrong data. NEW calibration of flurorescence sensor: using florescence and total chlorophyll a measured by HPLC, two different calibration were produced: for the stations TEW-1, TEW-7, TEW-8 and F-L and F-S the equation is : fluo_cor=2.954 * fluo^0.843 for all other stations the equation is : fluo_cor=1.545 * fluo^0.565