MIRAI MR06-01 Conductivity-Temperature-Depth Profiler (CTD)

Last Modified: 2017-06-22
: MR06-01
: 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 MR06-01 cruise are presented in “System”.
The following software, developed and supplied by the Sea-Bird Electronics, Inc., was used in MR06-01.
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 : 79492
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 : 031524
Measurement range : -5.0 to +35degC
Accuracy : 0.001degC
Resolution : 0.0002degC
• Salinity sensor
Model : SBE4, Sea-Bird Electronics,Inc.
Serial number : 042240
Measurement range : 0.0 to 7 S/m
Accuracy : 0.0003 S/m
Resolution : 0.00004 S/m
• DO sensor
Model : SBE43, Sea-Bird Electronics,Inc.
Serial number : 430330
Measurement range : 120% of surface saturation
Accuracy : 2% of saturation

Sensors used in each cast is as follows.
Cast name Serial number of sensor
Pressure Temperature Salinity Dissolved Oxygen
C01S0179492031524042240430330
C02S0179492031524042240430330
C03S0179492031524042240430330
C04S0279492031524042240430330
C05S0179492031524042240430330
C06S0179492031524042240430330
C07S0179492031524042240430330
C08S0179492031524042240430330
C09S0179492031524042240430330
C10S0179492031524042240430330
C11S0179492031524042240430330
C12S0179492031524042240430330
C13S0179492031524042240430330
C14S0179492031524042240430330
C15S0179492031524042240430330
C16S0179492031524042240430330
C17S0179492031524042240430330
C18S0179492031524042240430330
C19S0179492031524042240430330
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.
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.
section Extract rows of data from file.
loopedit Mark a scan with badflag if scan fails pressure reversal or minimum velocity tests.
derive Calculate oxygen. (with oxygen sensor)
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 (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.
: MR06-01
: 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
C02S01.dat
C03S01.dat
C04S02.dat
C05S01.dat
C06S01.dat
C07S01.dat
C08S01.dat
C09S01.dat
C10S01.dat
C11S01.dat
C12S01.dat
C13S01.dat
C14S01.dat
C15S01.dat
C16S01.dat
C17S01.dat
C18S01.dat
C19S01.dat
ex_read2.f (Sample Program)
Observation List
The list of observation is shown as follows.
Observation Time and Date Lat. [°] Lon. [°]
C01S01 2006-02-14 01:55 7.9586 156.0285
C02S01 2006-02-14 03:56 7.9915 155.9460
C03S01 2006-02-16 01:24 5.0388 155.9691
C04S02 2006-02-16 04:56 4.9864 156.0201
C05S01 2006-02-18 01:22 1.9678 155.9860
C06S01 2006-02-18 03:57 2.0240 156.0160
C07S01 2006-02-20 01:19 -0.0241 155.9341
C08S01 2006-02-20 08:38 -0.0123 156.0366
C09S01 2006-02-22 01:22 -1.9900 155.9743
C10S01 2006-02-23 01:22 -1.9655 156.0260
C11S01 2006-02-24 01:36 -5.0258 156.0430
C12S01 2006-02-24 07:07 -4.9923 156.0246
C13S01 2006-02-26 07:24 0.0398 146.9946
C14S01 2006-02-27 04:22 -0.0441 147.0155
C15S01 2006-03-01 04:51 4.9791 147.0576
C16S01 2006-03-03 01:37 5.0233 146.9421
C17S01 2006-03-04 01:37 2.0791 146.9655
C18S01 2006-03-04 04:49 2.0228 147.0146
C19S01 2006-03-12 22:50 18.0011 150.0051
: MR06-01
: 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.
2014-07-29
An observation data was registerd.
2014-02-07
An observation data was registerd.
2013-03-27
An observation data was registerd.
2012-11-25
An observation data was registerd.