MIRAI MR05-04 Conductivity-Temperature-Depth Profiler (CTD)

Last Modified: 2017-06-22
: MR05-04
: 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 MR05-04 cruise are presented in “System”.
The following software, developed and supplied by the Sea-Bird Electronics, Inc., was used in MR05-04.
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 : 031359
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 : 430205
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
KNTM0179492031359042240430205
KNTM0279492031359042240430205
KNTM0379492031359042240430205
K03M0179492031359042240430205
K03M0279492031359042240430205
K03M0379492031359042240430205
K02M0179492031359042240430205
K02M0279492031359042240430205
K02M0379492031359042240430205
K02M0479492031359042240430205
K02M0579492031359042240430205
K01M0179492031359042240430205
K01M0279492031359042240430205
K01M0379492031359042240430205
EW0M0179492031359042240430205
EW0M0279492031359042240430205
EW1M0179492031359042240430205
EW1M0279492031359042240430205
EW1M0379492031359042240430205
EW2M0179492031359042240430205
EW2M0279492031359042240430205
EW3M0179492031359042240430205
EW3M0279492031359042240430205
EW4M0179492031359042240430205
EW4M0279492031359042240430205
EW4M0379492031359042240430205
EW5M0179492031359042240430205
EW7M0179492031359042240430205
EW7M0279492031359042240430205
EW7M0379492031359042240430205
OSPM0179492031359042240430205
OSPM0279492031359042240430205
OSPM0379492031359042240430205
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.
: MR05-04
: 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
EW0M01.dat
EW0M02.dat
EW1M01.dat
EW1M02.dat
EW1M03.dat
EW2M01.dat
EW2M02.dat
EW3M01.dat
EW3M02.dat
EW4M01.dat
EW4M02.dat
EW4M03.dat
EW5M01.dat
EW7M01.dat
EW7M02.dat
EW7M03.dat
K01M01.dat
K01M02.dat
K01M03.dat
K02M01.dat
K02M02.dat
K02M03.dat
K02M04.dat
K02M05.dat
K03M01.dat
K03M02.dat
K03M03.dat
KNTM01.dat
KNTM02.dat
KNTM03.dat
OSPM01.dat
OSPM02.dat
OSPM03.dat
ex_read2.f (Sample Program)
Observation List
The list of observation is shown as follows.
Observation Time and Date Lat. [°] Lon. [°]
EW0M01 2005-09-29 12:33 47.0035 165.0000
EW0M02 2005-09-29 14:01 47.0003 164.9910
EW1M01 2005-09-30 16:26 47.6496 169.2780
EW1M02 2005-09-30 20:49 47.6676 169.2561
EW1M03 2005-10-01 01:09 47.6483 169.2610
EW2M01 2005-10-02 19:50 46.9990 174.9988
EW2M02 2005-10-02 21:27 47.0216 174.9708
EW3M01 2005-10-03 16:32 45.9988 -179.9973
EW3M02 2005-10-03 18:22 46.0086 179.9593
EW4M01 2005-10-05 19:22 46.0021 -175.0168
EW4M02 2005-10-06 00:54 46.0006 -174.9985
EW4M03 2005-10-06 15:53 45.9976 -174.9991
EW5M01 2005-10-08 09:45 47.0005 -170.0023
EW7M01 2005-10-12 20:23 49.4983 -160.0040
EW7M02 2005-10-12 22:02 49.5035 -160.0128
EW7M03 2005-10-13 00:23 49.5136 -160.0153
K01M01 2005-09-27 16:51 51.0035 164.9996
K01M02 2005-09-27 19:01 50.9965 165.0075
K01M03 2005-09-28 02:02 51.0021 164.9933
K02M01 2005-09-22 04:24 46.9733 159.9593
K02M02 2005-09-24 17:23 47.0070 159.9700
K02M03 2005-09-24 20:55 47.1181 160.1766
K02M04 2005-09-26 05:03 47.0776 160.1973
K02M05 2005-09-26 06:55 47.0775 160.1976
K03M01 2005-09-19 17:24 39.0000 160.0011
K03M02 2005-09-19 19:55 39.0256 160.0013
K03M03 2005-09-20 01:59 39.0430 160.0461
KNTM01 2005-09-16 23:49 43.9858 154.9930
KNTM02 2005-09-17 01:09 44.0000 154.9986
KNTM03 2005-09-17 03:00 44.0066 155.0078
OSPM01 2005-10-17 20:45 49.9396 -144.9478
OSPM02 2005-10-17 23:26 49.9058 -144.8935
OSPM03 2005-10-18 00:55 49.9020 -144.8908
: MR05-04
: 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.
2014-07-26
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.