MIRAI MR02-K06 Leg2 Conductivity-Temperature-Depth Profiler (CTD)

Last Modified: 2017-06-22
: MR02-K06 Leg2
: Processed (DMO)-QCed
: JAMSTEC
: Pressure, Temperature, Salinity, Dissolved oxygen
:
OCEANS > OCEAN CHEMISTRY > OXYGEN
OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
OCEANS > SALINITY/DENSITY > SALINITY

For Using Data

Data Management Office
See Terms and Conditions about constrain of use.
See Terms and Conditions about data citation.
Instrument:
Water sampling system with CTD (30 litters * 24 bottles)
Instrument:
Water sampling system with CTD (12 litters * 36 bottles)
Instrument:
Water sampling system with CTD (12 litters * 12 bottles)
Instrument:
Conductivity temperature depth measurements (CTD)
CTD(Conductivity-Temperature-Depth profiler) is used to observe the vertical profiles of temperature and conductivity.
Usually, this system is operated with multicylinder water sampler.
Observed signal is transmitted from sensor to the operation room on board using wire cable, and electric power is supplied from vessel to sensor.
Details of sensors attached to CTD system for MR02-K06 Leg2 cruise are presented in “System”.
The following software, developed and supplied by the Sea-Bird Electronics, Inc., was used in MR02-K06 Leg2.
SEASAVE(ver 5.27b) for data acquisition
SEASOFT(ver 5.27b) for data processing
Data presented on this website is averaged over 1db.

• Pressure sensor
Model : SBE9plus, Sea-Bird Electronics,Inc.
Serial number : 79511
Measurement range : up to 10500m
Accuracy : 0.015% F.S.
Resolution : 0.001% F.S.
• Temperature sensor
Model : SBE3, Sea-Bird Electronics,Inc.
Serial number : 032730
Measurement range : -5.0 to +35degC
Accuracy : 0.001degC
Resolution : 0.0002degC
• Salinity sensor
Model : SBE4, Sea-Bird Electronics,Inc.
Serial number : 041088
Measurement range : 0.0 to 7 S/m
Accuracy : 0.0003 S/m
Resolution : 0.00004 S/m

Sensors used in each cast is as follows.
Cast name Serial number of sensor
Pressure Temperature Salinity Dissolved Oxygen
C01s0179511032730041088-
C01s0279511032730041088-
C02s0179511032730041088-
C02s0279511032730041088-
C03s0179511032730041088-
C03s0279511032730041088-
C04s0179511032730041088-
C04s0279511032730041088-
C05s0179511032730041088-
C05s0279511032730041088-
C05s0379511032730041088-
C06s0179511032730041088-
C06s0279511032730041088-
C07s0179511032730041088-
C07s0279511032730041088-
C08s0179511032730041088-
C08s0279511032730041088-
C08s0379511032730041088-
C09s0179511032730041088-
C09s0279511032730041088-
C10s0179511032730041088-
C10s0279511032730041088-
C10s0379511032730041088-
C10s0479511032730041088-
Calibration Information is as follows.
(1) Data processing sequence for SEASOFT is as follows;
command function
datcnv Convert raw data to engineering units, and store converted data in file.
section Extract rows of data from file.
alignctd Align data relative to pressure(typically used for conductivity, temperature, and oxygen).
wildedit Mark a data value with badflag to eliminate wild points.
celltm Perform conductivity thermal mass correction.
filter Low-pass filter columns of data.
loopedit Mark a scan with badflag if scan fails pressure reversal or minimum velocity tests.
binavg Average data, basing bins on pressure, depth, scan number, or time range.
derive Calculate salinity, density, etc..
split Split data in file into upcast and downcast files.
(2) Quality control
QCed data were added flag according to the NODC (National Oceanographic Data Center) quality control procedure.
1) The gradient check of adjacent depth data
2) The density inversion check
3) The broad range check set up at given ocean space and depth
Please see the site of NODC of the following link for quality control procedure in detail.
In addition, an abnormal value is identified by a visual check, and the data after visual QC is released.
(1) In this cruise, there is extra data (fluorescence intensity, distance to bottom) in additional to temperature, salinity, dissolved oxygen that has been opened to the public. Please contact us from "Contact Us" above if necessary.
: MR02-K06 Leg2
: Processed (DMO)-QCed
: JAMSTEC
: Pressure, Temperature, Salinity, Dissolved oxygen
:
OCEANS > OCEAN CHEMISTRY > OXYGEN
OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
OCEANS > SALINITY/DENSITY > SALINITY

Observation Map

  1. Clicking the icon displays a balloon with observation information.
  2. Then click the observation name, figures will be displayed.
Imagery reproduced from ...

Figures

Data List

File names
C01s01.dat
C01s02.dat
C02s01.dat
C02s02.dat
C03s01.dat
C03s02.dat
C04s01.dat
C04s02.dat
C05s01.dat
C05s02.dat
C05s03.dat
C06s01.dat
C06s02.dat
C07s01.dat
C07s02.dat
C08s01.dat
C08s02.dat
C08s03.dat
C09s01.dat
C09s02.dat
C10s01.dat
C10s02.dat
C10s03.dat
C10s04.dat
ex_read2.f (Sample Program)
Observation List
The list of observation is shown as follows.
Observation Time and Date Lat. [°] Lon. [°]
C01s01 2002-12-19 02:03 5.0125 146.9736
C01s02 2002-12-19 03:57 5.0233 146.9675
C02s01 2002-12-21 02:05 2.0163 146.9928
C02s02 2002-12-21 03:44 2.0176 146.9940
C03s01 2002-12-22 17:57 0.0238 144.9916
C03s02 2002-12-23 01:00 -0.0001 144.9946
C04s01 2002-12-24 01:53 -0.0033 147.0080
C04s02 2002-12-24 03:23 -0.0070 147.0081
C05s01 2002-12-25 17:53 0.0018 151.0643
C05s02 2002-12-25 20:53 0.0183 151.0841
C05s03 2002-12-26 00:59 0.0078 151.1010
C06s01 2002-12-28 00:59 -4.9958 156.0115
C06s02 2002-12-28 02:57 -4.9926 156.0055
C07s01 2002-12-30 00:56 -1.9873 156.0050
C07s02 2002-12-30 02:55 -1.9913 156.0023
C08s01 2003-01-02 02:24 0.0190 155.9483
C08s02 2003-01-02 03:53 0.0146 155.9563
C08s03 2003-01-02 05:52 0.0183 155.9411
C09s01 2003-01-04 01:24 1.9481 156.0209
C09s02 2003-01-04 03:10 1.9478 156.0231
C10s01 2003-01-06 01:09 5.0480 155.9570
C10s02 2003-01-06 03:24 4.9956 156.0076
C10s03 2003-01-06 17:53 4.9736 155.9935
C10s04 2003-01-07 00:51 5.0011 155.9111
: MR02-K06 Leg2
: Processed (DMO)-QCed
: JAMSTEC

CTD DMO


Format Description for the Corrected Data
Provided in the Exchange Format of CCHDO (CLIVAR and Carbon Hydrographic Data Office). Please see the following link for details of Exchange Format.
Data in following cruise is not expressed with Exchange Format. Please see the site of each cruise for format.
MR02-K05 Leg1
MR04-05
Format Description for the QCed Data
Each data file contains one line header (meta data) followed by data lines for each cast.
The number of data lines are recorded in the header.
  1. Header part
No. Column Content Format Remarks
1 1 Header ID a1 fixed as '#'
2 3 - 6 Data ID a4 CTD
3 8 - 22 Cruise ID a15 MRYY-(K)XX(_legx)
4 24 - 31 Cast name a8
5 33 - 40 Date i8 YYYYMMDD (UTC)
6 42 - 45 Time i4 hhmm (UTC)
7 47 - 55 Latitude i2,a1,f5.2,a1 dd-mm.mmN(S)
8 57 - 66 Longitude i3,a1,f5.2,a1 ddd-mm.mmE(W)
9 68 - 71 Number of data lines i4
10 72 - 73 Terminator - CR+LF
  1. Data part
No. Column Content Unit Format Remarks
1 1 - 11 Pressure dbar f11.3
2 12 - 22 Temperature deg-C f11.4 ITS-90
3 23 - 33 Salinity PSU f11.4 PSS-78
4 34 - 44 Dissolved oxygen umol/kg f11.3
5 45 - 55 Flag - i11 1 - 7 : space
8 : flag of pressure
9 : flag of temperature
10 : flag of salinity
11 : flag of dissolved oxygen
* reference : 'Definition of Quality Control Flags'
6 56 - 57 Terminator - - CR+LF
  1. Each contents of the data part is stored in 11 bytes.
  2. Missing value is presented by '-5', and error value is presented by '-9'.

Definition of Quality Control Flags
  1. Depth Flags
  2. 0 - accepted value
    1 - error in recorded depth ( same or less than previous depth )
    2 - density inversion

  3. Observed Level Flags
  4. N - missing value
    0 - accepted value
    1 - range outlier ( outside of broad range check )
    2 - failed inversion check
    3 - failed gradient check
    4 - zero anomaly
    5 - failed combined gradient and inversion checks
    6 - failed range and inversion checks
    7 - failed range and gradient checks
    8 - failed range and zero anomaly checks
    9 - failed range and combined gradient and inversion checks
    A - failed visual check

    QCed data were added flag according to the NODC (National Oceanographic Data Center) quality control procedure, additionally visually checked. Please see the site of NODC of the following link for quality control procedure.

Related Information

Update History

2017-06-22
An observation data was registerd.
2014-08-20
An observation data was registerd.
2014-07-18
An observation data was registerd.
2014-02-06
An observation data was registerd.
2012-12-25
An observation data was registerd.