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CTD Notes
CTD Asc Filename Change Print Email
Written by JRW   
Tuesday, 30 June 2009 13:00
CTD asc filenames have typically been 'd or u' YYMMPPP.asc & .hdr (d or u = down or up casts; YY is year; MM month; PPP order occupied or proc #).  To standardize the file naming, the .asc & .hdr will be renamed to match the bottle-corrected csvs, YYYYMM_LLLLSSSS_PPPud.*, where YYMM is year month; LLLLSSSS is decimal Line & Sta (minus the '.'); PPP is order occupied (or processing number); u or d for up or down. 
Last Updated on Wednesday, 25 November 2009 12:28
 
CTD Asc Format Change Print Email
Written by JRW   
Tuesday, 30 June 2009 12:43
Voltage column headers in .asc files will be converted from "V0  V1  V2..." to sensor-specific labels.  If V0 is transmissometer then the column header will be changed from "V0" to "TransV".  Since the sensors can be mounted on different voltage channels on different cruises (or even the same cruise), this labeling scheme is important for easily distinguishing the sensor voltages.  JRW 06/30/2009 
Last Updated on Wednesday, 25 November 2009 12:28
 
CTD Asc Formats PDF Print Email
Notes
Written by Administrator   
Thursday, 02 July 2009 10:32

4sec asc columns - for comparison to bottle data to derive correction coefficients
# name 0 = scan: Scan Count
# name 1 = timeJ: Julian Days; converted to DD MMM YYYY HH:MM:SS
# name 2 = prDM: Pressure, Digiquartz [db]
# name 3 = t090C: Temperature [ITS-90, deg C]
# name 4 = t190C: Temperature, 2 [ITS-90, deg C]
# name 5 = v0: Voltage 0
# name 6 = v1: Voltage 1
# name 7 = v2: Voltage 2
# name 8 = v3: Voltage 3
# name 9 = v4: Voltage 4
# name 10 = v5: Voltage 5
# name 11 = v6: Voltage 6
# name 12 = v7: Voltage 7
# name 13 = flSP: Fluorescence, Seapoint
# name 14 = latitude: Latitude [deg]
# name 15 = longitude: Longitude [deg]
# name 16 = depSM: Depth [salt water, m], lat = 33.2358
# name 17 = potemp090C: Potential Temperature [ITS-90, deg C]
# name 18 = potemp190C: Potential Temperature, 2 [ITS-90, deg C]
# name 19 = sal00: Salinity [PSU]
# name 20 = sal11: Salinity, 2 [PSU]
# name 21 = sigma-é00: Density [sigma-theta, Kg/m3]
# name 22 = sigma-é11: Density, 2 [sigma-theta, Kg/m3]
# name 23 = sbeox0ML/L: Oxygen, SBE 43 [ml/l], WS = 4
# name 24 = sbeox0Mm/Kg: Oxygen, SBE 43 [umol/Kg], WS = 4
# name 25 = sbeox0PS: Oxygen, SBE 43 [% saturation], WS = 4
# name 26 = dm: Dynamic Meters [10 J/Kg]
# name 27 = sva: Specific Volume Anomaly [10-8 * m3/Kg]


Final asc columns that are combined with corrected values & bottle data
# name 0 = scan: Scan Count
# name 1 = timeJ: Julian Days;
converted to DD MMM YYYY HH:MM:SS
# name 2 = prDM: Pressure, Digiquartz [db]
# name 3 = t090C: Temperature [ITS-90, deg C]
# name 4 = t190C: Temperature, 2 [ITS-90, deg C]
# name 5 = v0: Voltage 0; relabeled to sensor voltage such as 'TransV'
# name 6 = v1: Voltage 1
; relabeled to sensor voltage such as 'FluorV'
# name 7 = v2: Voltage 2; relabeled to sensor voltage such as 'AltV'
# name 8 = v3: Voltage 3; relabeled to sensor voltage such as 'PARV'
# name 9 = v4: Voltage 4; relabeled to sensor voltage such as 'O2V'
# name 10 = v5: Voltage 5; relabeled to specific sensor voltage if used
# name 11 = v6: Voltage 6; relabeled to sensor voltage such as 'ISUSV'
# name 12 = v7: Voltage 7; relabeled to specific sensor voltage if used
# name 13 = spar: SPAR/Surface Irradiance
# name 14 = bat: Beam Attenuation, Chelsea/Seatech/Wetlab CStar [1/m]
# name 15 = xmiss: Beam Transmission, Chelsea/Seatech/Wetlab CStar [%]
# name 16 = flSP: Fluorescence, Seapoint
# name 17 = latitude: Latitude [deg]
# name 18 = longitude: Longitude [deg]
# name 19 = depSM: Depth [salt water, m], lat = 34.39
# name 20 = potemp090C: Potential Temperature [ITS-90, deg C]
# name 21 = potemp190C: Potential Temperature, 2 [ITS-90, deg C]
# name 22 = sal00: Salinity [PSU]
# name 23 = sal11: Salinity, 2 [PSU]
# name 24 = sigma-é00: Density [sigma-theta, Kg/m3]
# name 25 = sigma-é11: Density, 2 [sigma-theta, Kg/m3]
# name 26 = sbeox0ML/L: Oxygen, SBE 43 [ml/l], WS = 4
# name 27 = sbeox0Mm/Kg: Oxygen, SBE 43 [umol/Kg], WS = 4
# name 28 = sbeox0PS: Oxygen, SBE 43 [% saturation], WS = 4
# name 29 = dm: Dynamic Meters [10 J/Kg]
# name 30 = sva: Specific Volume Anomaly [10-8 * m3/Kg]
# name 31 = nbin: number of scans per bin

Please note that sensor voltage column order may change from cruise to cruise; sensor type, units, brand or other specifics may vary; some sensor voltage columns may be missing when sensors are not installed.

Last Updated on Thursday, 02 July 2009 11:03
 



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