PI: John Morrison
of: North Carolina State University
PI on Optics: Wilford Gardner, Mary Jo Richardson
dataset: CTD profile data averaged at two decibar intervals,
including beam attenuation
dates: January 08, 1995 to February 01, 1995
location: N: 22.4830 S: 9.9826 W: 57.2999 E: 68.7500
project/cruise: Arabian Sea/TTN-043 - Process Cruise 1 (Late NE Monsoon)
ship: Thomas Thompson
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:�4300201.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:�4300713.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.