US JGOFS Antarctic Environments Southern Ocean Process Study (AESOPS)
Palmer Leg 97-08; Nov. - Dec. 1997; Process 4
John M. Morrison
26 August 1998
This "readme" file pertains to the CTD data taken during
RV N. B. Palmer cruise NBP9708 from 5 November - 16 December 1997.
Dr. Walker Smith of the Virginia Institute of Marine Sciences
(wos@vims.edu) was the chief scientist during this leg.
This cruise was the fourth process study leg
of the U.S. JGOFS program in the Southern Ocean (AESOPS).
CTD Calibration:
On this cruise, one CTD configurations was used. The processing
and calibration information for cruise NBP9708 is given below:
The casts made with the Trace Metal Clean Rosette makde on this leg are not
reported here because this system was not designed to produce CTD data of
"WOCE" quality. The CTD system on this rosette was not capable of the
precision obtained from the system on the hydrographic rosette. It was
determined that the CTD dissolved oxygen sensor did not produce reliable
data on this cruise. The CTD transmissometer, fluorometer, light scattering
and PAR measurements are currently being calibrated by other investigators.
Note: The standard JGOFS CTD numbering scheme was not followed for this
cruise. The scheme used was 97840101.CNV --- CCCSSScc.CNV where CCC is the
cruise designation, SSS is the station designation beginning with station 300,
and cc is the cast number. The station designation should have started with
station 000 and not 400. All of the original data collected aboard ship
use this scheme, but the data in the JGOFS database have been changed to
the standard numbering scheme and start with station 000, cast 01.
This is the setup, processing and calibration information for all of the CTD
casts made with the Primary CTD system for cruise NBP9708.
---------------------------------------------------------------------------
SEA-BIRD Processing Information: Example 97840001.CNV
* Sea-Bird SBE 9 Raw Data File:
* FileName = G:\97840001.DAT
* Software Version 4.218
* Temperature SN = 2299
* Conductivity SN = 1852
* Number of Bytes Per Scan = 30
* Number of Voltage Words = 4
* System UpLoad Time = Nov 11 1997 23:29:21
* NMEA Latitude = 65 35.70 S
* NMEA Longitude = 170 7.93 W
* NMEA UpLoad Time = not available
* Store Lat/Lon Data = Add to Header Only
** Ship: R/V Nathaniel B. Palmer
** Cruise: JGOFS Southern Ocean
# nquan = 19
# nvalues = 102
# units = metric
# name 0 = scan: scan number
# name 1 = t068: temperature, pri, IPTS-68 [deg C]
# name 2 = t168: temperature, sec, IPTS-68 [deg C]
# name 3 = pr: pressure [db]
# name 4 = c0mS/cm: conductivity, primary [mS/cm]
# name 5 = c1mS/cm: conductivity, secondary [mS/cm]
# name 6 = xmiss: transmissometer
# name 7 = stLs6000: sea tech ls6000 [mg/l]
# name 8 = par: irradiance (PAR)
# name 9 = oxML/L: oxygen [ml/l]
# name 10 = flC: fluorometer, chelsea
# name 11 = depS: depth, salt water [m]
# name 12 = potemp068: potential temperature, pri, IPTS-68 [deg C]
# name 13 = sal00: salinity, PSS-78 [PSU], T0, C0
# name 14 = gpa: geopotential anomaly
# name 15 = dm: dynamic meters
# name 16 = sigma-é00: density, sigma-theta [kg/m^3], T0, C0
# name 17 = sigma-t00: density, sigma-t [kg/m^3], T0, C0
# name 18 = flag: 0.000e+00
# span 0 = 135, 7905
# span 1 = 1.5592, 1.6358
# span 2 = 1.5593, 1.6366
# span 3 = 4.000, 105.000
# span 4 = 29.645184, 29.670139
# span 5 = 29.639723, 29.664078
# span 6 = 88.51, 89.30
# span 7 = 33.00000, 33.00000
# span 8 = 6.579e-06, 6.579e-06
# span 9 = 7.20202, 7.50659
# span 10 = 5.370e-02, 2.219e-01
# span 11 = 3.961, 103.940
# span 12 = 1.5543, 1.6356
# span 13 = 33.9875, 33.9949
# span 14 = 0.000, 0.876
# span 15 = 0.0000, 0.0876
# span 16 = 27.1881, 27.1991
# span 17 = 27.1880, 27.1988
# span 18 = 0.000e+00, 0.000e+00
# interval = decibars: 1
# start_time = Nov 11 1997 23:29:21
# bad_flag = -9.990e-29
# sensor 0 = Frequency 0 temperature, primary, 2299, 28-Oct-97
# sensor 1 = Frequency 1 conductivity, primary, 1852, 28-Oct-97, cpcor = -9.5700e-08
# sensor 2 = Frequency 2 pressure, 53980, 23-Oct-97
# sensor 3 = Frequency 3 temperature, secondary, 2308, 28-Oct-97s
# sensor 4 = Frequency 4 conductivity, secondary, 1850, 28-Oct-97s, cpcor = -9.5700e-08
# sensor 5 = Extrnl Volt 0 oxygen, current, 130243, 31 May 1997
# sensor 6 = Extrnl Volt 1 oxygen, temperature, 130243, 31 May 1997
# sensor 7 = Extrnl Volt 2 transmissometer, 157D, 6/4/97
# sensor 8 = Extrnl Volt 3 fluorometer, chelsea, 088080, 29-Apr-97
# sensor 9 = Extrnl Volt 4 sea tech ls6000, 326, 05-17-96
# sensor 10 = Extrnl Volt 5 irradiance (PAR), 4469, 7-02-97
# datcnv_date = Nov 12 1997 21:20:30, 4.218
# datcnv_in = 97840001.DAT CTD_24.CON
# datcnv_skipover = 0
# wildedit_date = Nov 12 1997 21:20:46, 4.218
# wildedit_in = 97840001.CNV
# wildedit_pass1_nstd = 2.0
# wildedit_pass2_nstd = 20.0
# wildedit_npoint = 100
# wildedit_vars = scan t068 t168 pr c0mS/cm c1mS/cm xmiss stLs6000 par oxML/L flC
# wildedit_excl_bad_scans = yes
# celltm_date = Nov 12 1997 21:20:55, 4.218
# celltm_in = 97840001.CNV
# celltm_alpha = 0.0300, 0.0000
# celltm_tau = 7.0000, 0.0000
# filter_date = Nov 12 1997 21:21:04, 4.218
# filter_in = 97840001.CNV
# filter_low_pass_tc_A = 0.030
# filter_low_pass_tc_B = 0.150
# filter_low_pass_A_vars = c0mS/cm c1mS/cm
# filter_low_pass_B_vars = pr
# loopedit_date = Nov 12 1997 21:21:22, 4.218
# loopedit_in = 97840001.CNV
# loopedit_minVelocity = 0.250
# loopedit_excl_bad_scans = yes
# binavg_date = Nov 12 1997 21:21:35, 4.218
# binavg_in = 97840001.CNV
# binavg_bintype = Pressure Bins
# binavg_binsize = 1.00
# binavg_excl_bad_scans = yes
# binavg_downcast_only = yes
# binavg_skipover = 0
# binavg_surface_bin = yes, min = 0.300, max = 0.500, value = 0.000
# derive_date = Nov 12 1997 21:21:42, 4.218
# derive_in = 97840001.CNV CTD_24.CON
# file_type = ascii
----------------------------------------------------------------
Calibration:
Calibration for Conductivity and Salinity:
The CTD Conductivity sensor was calibrated by correlating the CTD
downcast conductivities with the conductivities of the water samples
taken with the SEA-BIRD carousel on the upcast. The mean and
standard deviations of these differences using all of the available
bottle data are given below.
/aesops/NBP9708/FINAL_DATA/97800001.cnf
/aesops/NBP9708/FINAL_DATA/97800003.cnf
/aesops/NBP9708/FINAL_DATA/97800005.cnf
/aesops/NBP9708/FINAL_DATA/97800101.cnf
/aesops/NBP9708/FINAL_DATA/97800102.cnf
/aesops/NBP9708/FINAL_DATA/97800103.cnf
/aesops/NBP9708/FINAL_DATA/97800104.cnf
/aesops/NBP9708/FINAL_DATA/97800106.cnf
/aesops/NBP9708/FINAL_DATA/97800202.cnf
/aesops/NBP9708/FINAL_DATA/97800204.cnf
/aesops/NBP9708/FINAL_DATA/97800205.cnf
/aesops/NBP9708/FINAL_DATA/97800206.cnf
/aesops/NBP9708/FINAL_DATA/97800207.cnf
/aesops/NBP9708/FINAL_DATA/97800208.cnf
/aesops/NBP9708/FINAL_DATA/97800301.cnf
/aesops/NBP9708/FINAL_DATA/97800303.cnf
/aesops/NBP9708/FINAL_DATA/97800401.cnf
/aesops/NBP9708/FINAL_DATA/97800402.cnf
/aesops/NBP9708/FINAL_DATA/97800501.cnf
/aesops/NBP9708/FINAL_DATA/97800504.cnf
/aesops/NBP9708/FINAL_DATA/97800602.cnf
/aesops/NBP9708/FINAL_DATA/97800605.cnf
/aesops/NBP9708/FINAL_DATA/97800606.cnf
/aesops/NBP9708/FINAL_DATA/97800607.cnf
/aesops/NBP9708/FINAL_DATA/97800609.cnf
/aesops/NBP9708/FINAL_DATA/97800610.cnf
/aesops/NBP9708/FINAL_DATA/97800701.cnf
/aesops/NBP9708/FINAL_DATA/97800801.cnf
/aesops/NBP9708/FINAL_DATA/97800901.cnf
/aesops/NBP9708/FINAL_DATA/97801003.cnf
/aesops/NBP9708/FINAL_DATA/97801005.cnf
/aesops/NBP9708/FINAL_DATA/97801007.cnf
/aesops/NBP9708/FINAL_DATA/97801008.cnf
/aesops/NBP9708/FINAL_DATA/97801009.cnf
/aesops/NBP9708/FINAL_DATA/97801101.cnf
/aesops/NBP9708/FINAL_DATA/97801202.cnf
/aesops/NBP9708/FINAL_DATA/97801203.cnf
/aesops/NBP9708/FINAL_DATA/97801301.cnf
/aesops/NBP9708/FINAL_DATA/97801401.cnf
/aesops/NBP9708/FINAL_DATA/97801501.cnf
/aesops/NBP9708/FINAL_DATA/97801602.cnf
/aesops/NBP9708/FINAL_DATA/97801603.cnf
/aesops/NBP9708/FINAL_DATA/97801604.cnf
/aesops/NBP9708/FINAL_DATA/97801605.cnf
/aesops/NBP9708/FINAL_DATA/97801608.cnf
/aesops/NBP9708/FINAL_DATA/97801701.cnf
/aesops/NBP9708/FINAL_DATA/97801801.cnf
/aesops/NBP9708/FINAL_DATA/97801901.cnf
/aesops/NBP9708/FINAL_DATA/97801904.cnf
/aesops/NBP9708/FINAL_DATA/97801905.cnf
/aesops/NBP9708/FINAL_DATA/97801908.cnf
/aesops/NBP9708/FINAL_DATA/97802001.cnf
/aesops/NBP9708/FINAL_DATA/97802101.cnf
/aesops/NBP9708/FINAL_DATA/97802202.cnf
/aesops/NBP9708/FINAL_DATA/97802304.cnf
/aesops/NBP9708/FINAL_DATA/97802305.cnf
/aesops/NBP9708/FINAL_DATA/97802308.cnf
/aesops/NBP9708/FINAL_DATA/97802401.cnf
/aesops/NBP9708/FINAL_DATA/97802503.cnf
/aesops/NBP9708/FINAL_DATA/97802504.cnf
/aesops/NBP9708/FINAL_DATA/97802601.cnf
/aesops/NBP9708/FINAL_DATA/97802702.cnf
/aesops/NBP9708/FINAL_DATA/97802704.cnf
/aesops/NBP9708/FINAL_DATA/97802801.cnf
/aesops/NBP9708/FINAL_DATA/97802803.cnf
/aesops/NBP9708/FINAL_DATA/97802901.cnf
/aesops/NBP9708/FINAL_DATA/97802904.cnf
/aesops/NBP9708/FINAL_DATA/97803001.cnf
/aesops/NBP9708/FINAL_DATA/97803003.cnf
/aesops/NBP9708/FINAL_DATA/97803103.cnf
/aesops/NBP9708/FINAL_DATA/97803201.cnf
/aesops/NBP9708/FINAL_DATA/97803302.cnf
/aesops/NBP9708/FINAL_DATA/97803303.cnf
/aesops/NBP9708/FINAL_DATA/97803304.cnf
/aesops/NBP9708/FINAL_DATA/97803305.cnf
/aesops/NBP9708/FINAL_DATA/97803401.cnf
/aesops/NBP9708/FINAL_DATA/97803402.cnf
/aesops/NBP9708/FINAL_DATA/97803502.cnf
/aesops/NBP9708/FINAL_DATA/97803601.cnf
/aesops/NBP9708/FINAL_DATA/97803602.cnf
/aesops/NBP9708/FINAL_DATA/97803603.cnf
/aesops/NBP9708/FINAL_DATA/97803702.cnf
/aesops/NBP9708/FINAL_DATA/97803703.cnf
/aesops/NBP9708/FINAL_DATA/97803706.cnf
/aesops/NBP9708/FINAL_DATA/97803707.cnf
/aesops/NBP9708/FINAL_DATA/97803708.cnf
/aesops/NBP9708/FINAL_DATA/97803709.cnf
/aesops/NBP9708/FINAL_DATA/97803710.cnf
/aesops/NBP9708/FINAL_DATA/97803711.cnf
MINIMUM PRESSURE USED = 0. db
Conductivity STDEV= 0.002 MEAN= -0.001
Salinity STDEV= 0.002 MEAN= -0.001
Therefore, a correction of .001 was applied to the CTD conductivities.
The reported Conductivities and Salinities are good to +/- .002.
------------------------------------------------------------------------
The Digital dissolved oxygen sensor did not provide reliable data
during this cruise. The CTD transmissometer, fluorometer, light
scattering and PAR measurements are currently being calibrated by
other investigators.
------------------------------------------------------------------------
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
FAX: 919-515-7802