MIRAI MR07-01 Conductivity-Temperature-Depth Profiler (CTD)

Last Modified: 2017-06-22
: MR07-01
: Processed (DMO)-QCed
: 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 MR07-01 cruise are presented in “System”.
The following software, developed and supplied by the Sea-Bird Electronics, Inc., was used in MR07-01.
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.
• 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.
• Pressure sensor
Model : SBE9plus, Sea-Bird Electronics,Inc.
Serial number : 42423
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 : 031525
Measurement range : -5.0 to +35degC
Accuracy : 0.001degC
Resolution : 0.0002degC
• 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 : 041206
Measurement range : 0.0 to 7 S/m
Accuracy : 0.0003 S/m
Resolution : 0.00004 S/m
• Salinity sensor
Model : SBE4, Sea-Bird Electronics,Inc.
Serial number : 043036
Measurement range : 0.0 to 7 S/m
Accuracy : 0.0003 S/m
Resolution : 0.00004 S/m
• 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
• 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
• DO sensor
Model : SBE43, Sea-Bird Electronics,Inc.
Serial number : 430394
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
001M01 79492 031525 041206 430394
001AM01 79492 031525 041206 430394
001AM02 79492 031525 041206 430394
002M01 79492 031525 041206 430394
002M02 79492 031525 041206 430394
003M01 79492 031525 041206 430394
004M01 79492 031525 041206 430394
005M01 79492 031525 041206 430394
006M01 79492 031525 041206 430394
006M02 79492 031525 041206 430394
007M01 79492 031525 041206 430394
008M01 79492 031525 041206 430394
009M01 79492 031525 041206 430394
010M01 79492 031525 041206 430394
010M02 79492 031525 041206 430394
011M01 79492 031525 041206 430394
012M01 79492 031525 041206 430394
012M02 79492 031525 041206 430394
013M01 79492 031525 041206 430394
014M01 79492 031525 043036 430394
014M02 79492 031525 043036 430394
015M01 79492 031525 043036 430394
017M01 79492 031525 043036 430394
016M01 79492 031525 043036 430394
018M01 79511 032730 042240 430394
018M02 79511 032730 042240 430394
022M01 79511 032730 042240 430394
022M02 79511 032730 042240 430394
026M01 42423 031525 042240 430394
026M02 42423 031525 042240 430394
026M03 42423 031525 042240 430394
028M01 42423 031525 041088 430394
029M01 42423 031525 041088 430394
030M01 42423 031525 041088 430394
030M02 42423 031525 041088 430394
032M01 42423 031525 041088 430394
032M02 42423 031525 041088 430394
033M01 42423 031525 041088 430394
035M01 42423 031525 041088 430394
035M02 42423 031525 041088 430394
036M01 42423 031525 041088 430394
038M01 42423 031525 041088 430394
037M01 42423 031525 041088 430394
039M01 42423 031525 041088 430394
039M02 42423 031525 041088 430394
042M01 42423 031525 041088 430394
042M02 42423 031525 041088 430394
044M01 42423 031525 041088 430394
046M01 42423 031525 041088 430394
046M02 42423 031525 041088 430394
046M03 42423 031525 041088 430394
045M01 42423 031525 041088 430394
043M01 42423 031525 041088 430394
041M01 42423 031525 041088 430394
040M01 42423 031525 041088 430394
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.
wfilter Median filter removes spikes of fluorometer 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 (fluorescence intensity, transmittance, 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.
: MR07-01
: Processed (DMO)-QCed
: 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
001AM01.dat
001AM02.dat
001M01.dat
002M01.dat
002M02.dat
003M01.dat
004M01.dat
005M01.dat
006M01.dat
006M02.dat
007M01.dat
008M01.dat
009M01.dat
010M01.dat
010M02.dat
011M01.dat
012M01.dat
012M02.dat
013M01.dat
014M01.dat
014M02.dat
015M01.dat
016M01.dat
017M01.dat
018M01.dat
018M02.dat
022M01.dat
022M02.dat
026M01.dat
026M02.dat
026M03.dat
028M01.dat
029M01.dat
030M01.dat
030M02.dat
032M01.dat
032M02.dat
033M01.dat
035M01.dat
035M02.dat
036M01.dat
037M01.dat
038M01.dat
039M01.dat
039M02.dat
040M01.dat
041M01.dat
042M01.dat
042M02.dat
043M01.dat
044M01.dat
045M01.dat
046M01.dat
046M02.dat
046M03.dat
ex_read2.f (Sample Program)
Observation List
The list of observation is shown as follows.
Observation Time and Date Lat. [°] Lon. [°]
001AM01 2007-02-20 22:52 24.7700 148.5258
001AM02 2007-02-21 03:54 24.7791 148.4916
001M01 2007-02-18 09:00 37.9096 146.5755
002M01 2007-02-25 20:18 -0.0001 154.9971
002M02 2007-02-26 02:08 0.0025 154.9845
003M01 2007-02-26 07:03 0.9835 155.1308
004M01 2007-02-26 20:22 1.9996 154.9983
005M01 2007-02-27 05:42 2.9863 154.9995
006M01 2007-02-27 20:22 4.1648 155.0008
006M02 2007-02-28 02:04 4.1733 155.0061
007M01 2007-02-28 06:27 5.0656 154.9990
008M01 2007-02-28 20:21 5.9993 154.9988
009M01 2007-03-01 05:42 6.9871 154.9995
010M01 2007-03-01 20:21 8.0016 155.0004
010M02 2007-03-02 02:01 8.0138 155.0063
011M01 2007-03-02 07:09 8.9915 154.9976
012M01 2007-03-02 20:22 9.9978 154.9980
012M02 2007-03-03 01:35 10.0010 154.9695
013M01 2007-03-03 06:37 10.9830 154.9990
014M01 2007-03-03 20:21 11.9988 154.9966
014M02 2007-03-04 02:04 12.0715 154.9381
015M01 2007-03-04 07:14 12.9761 155.0016
016M01 2007-03-06 06:01 14.0150 154.9985
017M01 2007-03-05 20:16 14.9998 154.9988
018M01 2007-03-06 20:22 15.9986 154.9983
018M02 2007-03-07 01:52 16.0040 155.0011
022M01 2007-03-07 20:21 20.0020 154.9983
022M02 2007-03-08 01:46 20.0621 155.0245
026M01 2007-03-08 20:32 24.0050 155.0008
026M02 2007-03-09 01:43 24.0458 154.9923
026M03 2007-03-09 03:19 24.0471 154.9773
028M01 2007-03-13 04:21 26.0611 154.9956
029M01 2007-03-13 12:22 26.9831 155.0105
030M01 2007-03-13 21:05 27.9980 155.0035
030M02 2007-03-14 02:38 27.9365 155.0186
032M01 2007-03-14 20:23 30.0011 155.0530
032M02 2007-03-15 01:39 29.9970 155.0543
033M01 2007-03-15 07:29 30.9926 155.0050
035M01 2007-03-15 20:30 32.9970 154.9948
035M02 2007-03-16 02:01 32.9985 154.9950
036M01 2007-03-16 07:21 33.9820 154.9911
037M01 2007-03-17 05:30 35.0138 154.9950
038M01 2007-03-16 20:21 35.9985 155.0038
039M01 2007-03-17 20:22 37.0000 154.9986
039M02 2007-03-18 01:52 36.9430 154.9476
040M01 2007-03-22 21:16 38.0016 155.0053
041M01 2007-03-22 12:58 39.0120 154.9990
042M01 2007-03-19 04:11 39.7500 154.9590
042M02 2007-03-19 05:44 39.7695 154.9640
043M01 2007-03-22 00:59 41.0005 154.9993
044M01 2007-03-20 06:45 41.9858 154.9978
045M01 2007-03-21 12:38 43.0115 154.9901
046M01 2007-03-20 21:51 43.9958 154.9981
046M02 2007-03-21 03:42 44.0043 154.9838
046M03 2007-03-21 05:48 44.0198 155.0145
: MR07-01
: Processed (DMO)-QCed

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.
2014-08-21
An observation data was registerd.
2014-07-30
An observation data was registerd.
2014-02-07
An observation data was registerd.
2013-03-27
An observation data was registerd.
2012-10-27
An observation data was registerd.