MIRAI MR99-K02 Conductivity-Temperature-Depth Profiler (CTD)

Last Modified: 2017-06-22
: MR99-K02
: 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 MR99-K02 cruise are presented in “System”.
The following software, developed and supplied by the Sea-Bird Electronics, Inc., was used in MR99-K02.
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 : 42410
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 : 031524
Measurement range : -5.0 to +35degC
Accuracy : 0.001degC
Resolution : 0.0002degC
• 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 : 041203
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 : 041202
Measurement range : 0.0 to 7 S/m
Accuracy : 0.0003 S/m
Resolution : 0.00004 S/m
• DO sensor
Model : SBE13, Sea-Bird Electronics,Inc.
Serial number : 130338
Measurement range : 0 to 15ml/l
Accuracy : 0.1ml/l
Resolution : 0.01ml/l

Sensors used in each cast is as follows.
Cast name Serial number of sensor
Pressure Temperature Salinity Dissolved Oxygen
99K2K1L142410031524041203130338
99K2K1S142423031359041202-
99K2K1L242410031524041203130338
99K2K1L342410031524041203130338
99K2K1S242423031359041202-
99K2K2L142410031524041203130338
99K2K2S142423031359041202-
99K2K3L142410031524041203130338
99K2K3S142423031359041202-
99K2K3L242410031524041203130338
99K2K4L142410031524041203130338
99K2K4S142423031359041202-
99K2K4L242410031524041203130338
99K2K5L142410031524041203130338
99K2K5S142423031359041202-
99K2K5L242410031524041203130338
99K2O1L142410031524041203130338
99K250L142410031524041203130338
99K250S142423031359041202130338
99K250L242410031524041203130338
99K250S242423031359041202130338
99K250L342410031524041203130338
99K2O2L142410031524041203130338
99K240L142410031524041203130338
99K240S142423031359041202130338
99K240L242410031524041203130338
99K240L342410031524041203130338
99K240S242423031359041202130338
99K2O3L142410031524041203130338
KN21DL142410031524041203130338
KN21DS142423031359041202130338
KN21DL242410031524041203130338
KN21DS242423031359041202130338
KN21DL342410031524041203130338
KN23DL142410031524041203130338
99K2HPL142410031524041203130338
99K2HPS142423031359041202-
99K2HPL242410031524041203130338
99K2HPL342410031524041203130338
99K2LPL142410031524041203130338
99K2LPS142423031359041202130338
99K2LPL242410031524041203130338
99K2HPL442410031524041203130338
99K2HPS242423031359041202130338
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 (fluorescence intensity) in additional to temperature, salinity, dissolved oxygen that has been opened to the public. Please contact us from "Contact Us" above if necessary.
: MR99-K02
: 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
99K240L1.dat
99K240L2.dat
99K240L3.dat
99K240S1.dat
99K240S2.dat
99K250L1.dat
99K250L2.dat
99K250L3.dat
99K250S1.dat
99K250S2.dat
99K2HPL1.dat
99K2HPL2.dat
99K2HPL3.dat
99K2HPL4.dat
99K2HPS1.dat
99K2HPS2.dat
99K2K1L1.dat
99K2K1L2.dat
99K2K1L3.dat
99K2K1S1.dat
99K2K1S2.dat
99K2K2L1.dat
99K2K2S1.dat
99K2K3L1.dat
99K2K3L2.dat
99K2K3S1.dat
99K2K4L1.dat
99K2K4L2.dat
99K2K4S1.dat
99K2K5L1.dat
99K2K5L2.dat
99K2K5S1.dat
99K2LPL1.dat
99K2LPL2.dat
99K2LPS1.dat
99K2O1L1.dat
99K2O2L1.dat
99K2O3L1.dat
KN21DL1.dat
KN21DL2.dat
KN21DL3.dat
KN21DS1.dat
KN21DS2.dat
KN23DL1.dat
ex_read2.f (Sample Program)
Observation List
The list of observation is shown as follows.
Observation Time and Date Lat. [°] Lon. [°]
99K240L1 1999-05-20 06:00 40.0053 165.0138
99K240L2 1999-05-20 11:36 39.9976 165.0023
99K240L3 1999-05-20 12:43 40.0008 165.0021
99K240S1 1999-05-20 09:26 39.9908 165.0040
99K240S2 1999-05-20 14:22 40.0043 164.9990
99K250L1 1999-05-17 02:35 50.0000 164.9991
99K250L2 1999-05-17 05:05 49.9983 164.9993
99K250L3 1999-05-17 09:17 49.9921 164.9898
99K250S1 1999-05-17 04:29 49.9985 165.0010
99K250S2 1999-05-17 06:25 50.0018 164.9976
99K2HPL1 1999-05-26 23:30 44.2605 156.1475
99K2HPL2 1999-05-27 01:42 44.2488 156.1561
99K2HPL3 1999-05-27 03:01 44.2581 156.1720
99K2HPL4 1999-05-27 15:43 44.2228 156.2336
99K2HPS1 1999-05-27 00:28 44.2568 156.1536
99K2HPS2 1999-05-27 17:03 44.2256 156.2460
99K2K1L1 1999-05-10 04:52 43.9913 155.0011
99K2K1L2 1999-05-10 11:17 43.9826 155.0026
99K2K1L3 1999-05-10 12:46 43.9838 155.0016
99K2K1S1 1999-05-10 08:27 43.9786 154.9996
99K2K1S2 1999-05-10 14:20 43.9831 155.0071
99K2K2L1 1999-05-11 02:10 43.9928 154.9986
99K2K2S1 1999-05-11 03:33 44.0000 155.0156
99K2K3L1 1999-05-12 07:04 44.0038 154.4971
99K2K3L2 1999-05-12 10:30 44.0130 154.4678
99K2K3S1 1999-05-12 08:19 44.0010 154.4815
99K2K4L1 1999-05-13 23:13 44.6686 155.8516
99K2K4L2 1999-05-14 01:46 44.6581 155.8271
99K2K4S1 1999-05-14 00:42 44.6584 155.8266
99K2K5L1 1999-05-14 23:40 44.7788 156.0260
99K2K5L2 1999-05-15 01:46 44.7786 156.0265
99K2K5S1 1999-05-15 00:37 44.7796 156.0263
99K2LPL1 1999-05-27 10:21 44.5146 156.2010
99K2LPL2 1999-05-27 11:47 44.5166 156.2035
99K2LPS1 1999-05-27 11:13 44.5171 156.2021
99K2O1L1 1999-05-16 01:26 46.9250 159.7303
99K2O2L1 1999-05-19 01:23 45.8438 165.0086
99K2O3L1 1999-05-22 01:17 41.8871 160.1180
KN21DL1 1999-05-22 23:57 44.0013 155.0021
KN21DL2 1999-05-23 05:06 44.0070 154.9763
KN21DL3 1999-05-23 08:55 44.0345 154.9936
KN21DS1 1999-05-23 04:34 44.0018 154.9788
KN21DS2 1999-05-23 06:28 44.0266 154.9860
KN23DL1 1999-05-25 00:13 44.0095 155.2408
: MR99-K02
: 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.
2014-08-19
An observation data was registerd.
2014-07-12
An observation data was registerd.
2014-02-07
An observation data was registerd.
2013-03-27
An observation data was registerd.
2013-01-25
An observation data was registerd.