John M. Morrison -- 15 December 1995 TN043: U.S. JGOFS Arabian Sea Process Study -- Process Cruise #1:
This "readme" file pertains to the CTD data taken during RV T.G. Thompson cruise TN043. This cruise was the first JGOFS Arabian Sea Process Leg and took place between 8 January and 5 February 1995. Dr. M. Roman of the University of Maryland's Horn Point Laboratory was the chief scientist. A number of CTD casts were made in test mode. The data from these casts were deemed unrecoverable (noisy data due to winch problems) and are listed as follows: event 01220023 station 17 cast 11 event 01290934 station 27 cast 05 event 01312228 station 29 cast 03 Digital dissolved oxygen, transmissometer and fluoruometer data were also collected on the CTD, but are not reported here as we have not calibrated this data. The raw data files may be requested from: DR.JOHN M. MORRISON NORTH CAROLINA STATE UNIVERSITY DEPARTMENT OF MARINE, EARTH AND ATMOSPHERIC SCIENCES JORDAN HALL RM. 1125 BOX 8208 RALEIGH, NC 27695-8208 EMAIL: John_Morrison@NCSU.EDU PHONE: 919-515-7449 CTD Calibration: On this cruise, two different CTD configurations were used. The processing and calibration information for each of the configurations are given below: configuration 1 ------------------------------- John M. Morrison 15 December 1995 Setup, processing and calibation information for the initial setup of the CTD for cruise TN043. It was used for the following casts: cruise 043 station 001 cast 01 cruise 043 station 002 cast 01 cruise 043 station 003 cast 01 cruise 043 station 003 cast 03 cruise 043 station 004 cast 01 cruise 043 station 004 cast 04 cruise 043 station 005 cast 01 cruise 043 station 006 cast 01 cruise 043 station 006 cast 03 cruise 043 station 007 cast 01 cruise 043 station 007 cast 05 Sea-Bird Processing Information: (Example from ctd cast 04300201) * Sea-Bird SBE 9 Raw Data File: * FileName = G:\04300201.DAT * Software Version 4.205 * Temperature SN = 1605 * Conductivity SN = 1371 * Number of Bytes Per Scan = 37 * Number of Voltage Words = 4 * System UpLoad Time = Jan 09 1995 02:08:20 * NMEA Latitude = 22 28.96 N * NMEA Longitude = 061 11.08 E * NMEA UpLoad Time = not available * Store Lat/Lon Data = Add to Header and Append to Every Scan * Ship: R/V Thomas G. Thompson * Cruise: JGOFS Arabian Sea Expedition # nquan = 15 # nvalues = 508 # units = metric # name 0 = t068: temperature, pri, IPTS-68 [deg C] # name 1 = c0mS/cm: conductivity, primary [mS/cm] # name 2 = pr: pressure [db] # name 3 = t168: temperature, sec, IPTS-68 [deg C] # name 4 = c1mS/cm: conductivity, secondary [mS/cm] # name 5 = oxML/L: oxygen [ml/l] # name 6 = xmiss: transmissometer # name 7 = flS: fluorometer, sea tech # name 8 = depS: depth, salt water [m] # name 9 = potemp068: potential temperature, pri, IPTS-68 [deg C] # name 10 = sigma-t00: density, sigma-t [kg/m^3], T0, C0 # name 11 = sigma-i00: density, sigma-theta [kg/m^3], T0, C0 # name 12 = sal00: salinity, PSS-78 [PSU], T0, C0 # name 13 = sal11: salinity, PSS-78 [PSU], T1, C1 # name 14 = flag: 0.000e+00 # span 0 = 16.4013, 24.5890 # span 1 = 45.821327, 54.931889 # span 2 = 1.000, 256.000 # span 3 = 16.4010, 24.5959 # span 4 = 45.815933, 54.939217 # span 5 = -0.28523, 10.73771 # span 6 = 28.99, 91.08 # span 7 = 0.000e+00, 0.000e+00 # span 8 = 0.994, 254.240 # span 9 = 16.3613, 24.5776 # span 10 = 24.6830, 26.6361 # span 11 = 24.6838, 26.6459 # span 12 = 36.1022, 36.7169 # span 13 = 36.0998, 36.7173 # span 14 = 0.000e+00, 0.000e+00 # interval = decibars: 1 # start_time = Jan 09 1995 02:08:20 # bad_flag = -9.990e-29 # serial_numbers = t0:1605, c0:1371, pr:34901, t1:1316, c1:1084, ox:352, upoly0:AC3, upoly1:AC3, stLs60D # datcnv_date = Jan 09 1995 03:40:04, 4.205 # datcnv_in = 04300201.DAT CTD_24.CON 1605 1371 34901 # datcnv_skipover = 0 # wildedit_date = Jan 09 1995 03:42:01, 4.205 # wildedit_in = 04300201.CNV # wildedit_pass1_nstd = 2.0 # wildedit_pass2_nstd = 20.0 # wildedit_npoint = 100 # wildedit_vars = t068 c0mS/cm pr t168 c1mS/cm oxML/L xmiss flS # wildedit_excl_bad_scans = yes # celltm_date = Jan 09 1995 03:42:45, 4.205 # celltm_in = TEMP.CNV # celltm_alpha = 0.0300, 0.0000 # celltm_tau = 9.0000, 0.0000 # filter_date = Jan 09 1995 03:43:22, 4.205 # filter_in = 04300201.CNV # filter_low_pass_tc_A = 0.150 # filter_low_pass_tc_B = 0.100 # filter_low_pass_A_vars = pr # filter_low_pass_B_vars = # loopedit_date = Jan 09 1995 03:44:38, 4.205 # loopedit_in = TEMP.CNV # loopedit_minVelocity = 0.000 # loopedit_excl_bad_scans = yes # binavg_date = Jan 09 1995 03:45:30, 4.205 # binavg_in = 04300201.CNV # binavg_bintype = Pressure Bins # binavg_binsize = 1.00 # binavg_excl_bad_scans = yes # binavg_downcast_only = no # binavg_skipover = 0 # binavg_surface_bin = yes, min = 0.500, max = 0.500, value = 0.000 # derive_date = Jan 09 1995 03:46:09, 4.205 # derive_in = TEMP.CNV CTD_24.CON # file_type = ascii *END* Calibration: Calibration for Conductivity and Salinity: MINIMUM DEPTH USED = 500.000 Conductivity STDEV= 0.00259877 MEAN= 0.00169401 Salinity STDEV= 0.00266719 MEAN= 0.00180285 If full range was used for the Conductivity and Salinity Calibration, the mean remains the same, but the STDEV becomes larger as would be expected in the high-gradient, and variable surface layers. Therefore, a correction of -.002 was applied to the shipboard Conductivities and Salinities. The reported Conductivities and Salinities are good to +/- .003. configuration 2 ---------------------------------- John M. Morrison 15 December 1995 Setup, processing and calibation information for the second setup of the CTD for cruise TN043. It was used for the following casts: cruise 043 station 007 cast 11 cruise 043 station 007 cast 13 cruise 043 station 007 cast 14 cruise 043 station 008 cast 01 cruise 043 station 008 cast 03 cruise 043 station 009 cast 01 cruise 043 station 009 cast 03 cruise 043 station 010 cast 01 cruise 043 station 010 cast 03 cruise 043 station 011 cast 01 cruise 043 station 011 cast 04 cruise 043 station 012 cast 01 cruise 043 station 012 cast 03 cruise 043 station 013 cast 01 cruise 043 station 013 cast 07 cruise 043 station 013 cast 09 cruise 043 station 013 cast 10 cruise 043 station 013 cast 11 cruise 043 station 014 cast 01 cruise 043 station 014 cast 03 cruise 043 station 015 cast 01 cruise 043 station 015 cast 03 cruise 043 station 016 cast 01 cruise 043 station 016 cast 03 cruise 043 station 017 cast 01 cruise 043 station 017 cast 05 cruise 043 station 017 cast 09 cruise 043 station 017 cast 10 cruise 043 station 017 cast 11 cruise 043 station 018 cast 01 cruise 043 station 018 cast 03 cruise 043 station 019 cast 02 cruise 043 station 019 cast 03 cruise 043 station 020 cast 01 cruise 043 station 020 cast 02 cruise 043 station 021 cast 01 cruise 043 station 021 cast 05 cruise 043 station 021 cast 08 cruise 043 station 021 cast 10 cruise 043 station 021 cast 12 cruise 043 station 021 cast 13 cruise 043 station 022 cast 01 cruise 043 station 023 cast 01 cruise 043 station 024 cast 01 cruise 043 station 024 cast 03 cruise 043 station 025 cast 01 cruise 043 station 025 cast 03 cruise 043 station 026 cast 01 cruise 043 station 026 cast 05 cruise 043 station 026 cast 08 cruise 043 station 026 cast 10 cruise 043 station 026 cast 12 cruise 043 station 027 cast 01 cruise 043 station 027 cast 02 cruise 043 station 027 cast 05 cruise 043 station 028 cast 01 cruise 043 station 028 cast 05 cruise 043 station 028 cast 09 cruise 043 station 028 cast 10 cruise 043 station 028 cast 11 cruise 043 station 029 cast 01 cruise 043 station 029 cast 02 cruise 043 station 029 cast 03 cruise 043 station 030 cast 01 Sea-Bird Processing Information: (Example from ctd cast 04300713) * Sea-Bird SBE 9 Raw Data File: * FileName = G:\04300713.DAT * Software Version 4.205 * Temperature SN = 1605 * Conductivity SN = 1371 * Number of Bytes Per Scan = 37 * Number of Voltage Words = 4 * System UpLoad Time = Jan 13 1995 09:20:09 * NMEA Latitude = 19 9.98 N * NMEA Longitude = 067 9.97 E * NMEA UpLoad Time = not available * Store Lat/Lon Data = Add to Header and Append to Every Scan * Ship: R/V Thomas G. Thompson * Cruise: JGOFS Arabian Sea Expedition # nquan = 15 # nvalues = 5061 # units = metric # name 0 = t068: temperature, pri, IPTS-68 [deg C] # name 1 = c0mS/cm: conductivity, primary [mS/cm] # name 2 = pr: pressure [db] # name 3 = t168: temperature, sec, IPTS-68 [deg C] # name 4 = c1mS/cm: conductivity, secondary [mS/cm] # name 5 = oxML/L: oxygen [ml/l] # name 6 = xmiss: transmissometer # name 7 = flS: fluorometer, sea tech # name 8 = depS: depth, salt water [m] # name 9 = potemp068: potential temperature, pri, IPTS-68 [deg C] # name 10 = sigma-t00: density, sigma-t [kg/m^3], T0, C0 # name 11 = sigma-i00: density, sigma-theta [kg/m^3], T0, C0 # name 12 = sal00: salinity, PSS-78 [PSU], T0, C0 # name 13 = sal11: salinity, PSS-78 [PSU], T1, C1 # name 14 = flag: 0.000e+00 # span 0 = 2.1813, 24.9021 # span 1 = 31.823267, 55.041656 # span 2 = 1.000, 2532.000 # span 3 = 2.1820, 24.9060 # span 4 = 31.821650, 55.043922 # span 5 = -1.72205, 3.64451 # span 6 = 89.83, 93.30 # span 7 = 2.202e-01, 1.966e+00 # span 8 = 0.994, 2501.573 # span 9 = 1.9943, 24.9015 # span 10 = 24.5439, 27.7705 # span 11 = 24.5441, 27.7856 # span 12 = 34.7668, 36.5490 # span 13 = 34.7638, 36.5478 # span 14 = 0.000e+00, 0.000e+00 # interval = decibars: 1 # start_time = Jan 13 1995 09:20:09 # bad_flag = -9.990e-29 # serial_numbers = t0:1605, c0:1371, pr:57657, t1:1316, c1:1084, ox:132, stLs6000:239, xmiss:173D, flS:D # datcnv_date = Jan 13 1995 11:19:52, 4.205 # datcnv_in = 04300713.DAT CTD_24.CON 1605 1371 57657 # datcnv_skipover = 0 # wildedit_date = Jan 13 1995 11:27:22, 4.205 # wildedit_in = 04300713.CNV # wildedit_pass1_nstd = 2.0 # wildedit_pass2_nstd = 20.0 # wildedit_npoint = 100 # wildedit_vars = t068 c0mS/cm pr t168 c1mS/cm oxML/L xmiss flS # wildedit_excl_bad_scans = yes # celltm_date = Jan 13 1995 11:30:04, 4.205 # celltm_in = TEMP.CNV # celltm_alpha = 0.0300, 0.0000 # celltm_tau = 9.0000, 0.0000 # filter_date = Jan 13 1995 11:32:20, 4.205 # filter_in = 04300713.CNV # filter_low_pass_tc_A = 0.150 # filter_low_pass_tc_B = 0.100 # filter_low_pass_A_vars = pr # filter_low_pass_B_vars = # loopedit_date = Jan 13 1995 11:37:05, 4.205 # loopedit_in = TEMP.CNV # loopedit_minVelocity = 0.000 # loopedit_excl_bad_scans = yes # binavg_date = Jan 13 1995 11:40:25, 4.205 # binavg_in = 04300713.CNV # binavg_bintype = Pressure Bins # binavg_binsize = 1.00 # binavg_excl_bad_scans = yes # binavg_downcast_only = no # binavg_skipover = 0 # binavg_surface_bin = yes, min = 0.500, max = 0.500, value = 0.000 # derive_date = Jan 13 1995 11:42:59, 4.205 # derive_in = TEMP.CNV CTD_24.CON # file_type = ascii *END* Calibration: Calibration for Conductivity and Salinity: MINIMUM DEPTH USED = 500.000 Conductivity STDEV= 0.00258307 MEAN= -0.00156166 Salinity STDEV= 0.00273680 MEAN= -0.00164091 If full range was used for the Conductivity and Salinity Calibration, the mean remains the same, but the STDEV becomes larger as would be expected in the high-gradient, and variable surface layers. Therefore, a correction of +.002 was applied to the shipboard Conductivities and Salinities. The reported Conductivities and Salinities are good to +/- .003.