MIRAI MR14-05 Expendable Conductivity-Temperature-Depth Profiler (XCTD)

Last Modified: 2019-08-31
: MR14-05
: Processed (DMO)-QCed
: JAMSTEC
: Depth, Temperature, Salinity
:
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:
Expendable conductivity temperature depth measurements (XCTD) (MR11-04 - )
Instrument:
Expendable conductivity temperature depth measurements (XCTD) ( - MR11-E02)
Using XCTD (eXpendable Conductivity Temperature Depth profiler) system, the vertical distribution of water temperature and salinity are observed during free fall of its probe part in the seawater. Observed temperature and conductivity are transmitted to the data processor on board by the digital signal. The digital signal is converted to the temperature, conductivity and depth by data processor as binary data. Binary data is transmitted from data processor to PC. The PC calculates salinity from temperature, conductivity and depth, and those properties are recorded in PC as the ASCII files.

(1) Launcher
Hand launcher
Manufacturer : Sippican,Inc.
Operation area : Rear upper deck

Automatic launcher
Manufacturer : Tsurumi Seiki Co., LTD.
Location : Port side of rear upper deck (4m from the sea level). The control panel is installed in the investigation room.

(2) Converter
Manufacturer : Tsurumi Seiki Co., LTD.
Location : Investigation room
Sampling rate : 40 msec

(3) XCTD probe specifications
Probe Type TSK XCTD-1 TSK XCTD-2 TSK XCTD-3 TSK XCTD-4
Temperature range [deg-C] -2 to 35
Temperature accuracy [deg-C] +/- 0.02
Temperature resolution [deg-C] 0.01
Conductivity range [mS/cm] 0 to 60
Conductivity accuracy [mS/cm] +/- 0.03
Conductivity resolution [mS/cm] 0.015
Measurment depth [m] 1000 1850 1000 1850
Depth accuracy [m] 5 or +/- 2% of depth; whichever is larger
Maximum elapsed time [sec] 300 600 200 502
Rated ship speed [knot] 12 3.5 20 6

Since XCTD carries no pressure sensor, we need to estimate depth from the elapsed time. The fall-rate equation is as follows.

Z = at + 10E-3 * bt2

Where Z(m) is the depth and t(sec) is the elapsed time.

In addition, coefficients of the fall-rate equation are different by probe types.

Probe Type TSK XCTD-1 TSK XCTD-2 TSK XCTD-3 TSK XCTD-4
Coefficient-a 3.42543 3.43898 5.07598 3.68081
Coefficient-b -0.47 -0.31 -0.72 -0.47
* Coefficients listed above are supplied by Sippican, Inc., in USA.

The list of an XCTD type used in each cast is as follows.

Cast name Probe Serial No. Probe Type Launcher Converter
201409052106 14046683 XCTD-1 Hand MK-150N
201409052133 14046686 XCTD-1 Auto MK-150N
201409052203 14046688 XCTD-1 Auto MK-150N
201409052232 14046684 XCTD-1 Auto MK-150N
201409060111 12057588 XCTD-1 Auto MK-150N
201409060139 14046693 XCTD-1 Auto MK-150N
201409060215 14046694 XCTD-1 Auto MK-150N
201409060248 14046690 XCTD-1 Auto MK-150N
201409060325 13114414 XCTD-1 Auto MK-150N
201409060411 14046691 XCTD-1 Auto MK-150N
201409060458 13114413 XCTD-1 Auto MK-150N
201409060924 14046689 XCTD-1 Auto MK-150N
201409061042 14046687 XCTD-1 Auto MK-150N
201409061454 12057590 XCTD-1 Auto MK-150N
201409061537 12057594 XCTD-1 Auto MK-150N
201409111005 12057589 XCTD-1 Auto MK-150N
201409111036 12057593 XCTD-1 Auto MK-150N
201409111510 12057592 XCTD-1 Auto MK-150N
201409111559 12057597 XCTD-1 Auto MK-150N
201409140856 12057596 XCTD-1 Auto MK-150N
201409140922 12057599 XCTD-1 Auto MK-150N
201409140948 12057595 XCTD-1 Auto MK-150N
201409141455 14046598 XCTD-1 Auto MK-150N
201409141520 12057598 XCTD-1 Auto MK-150N
201409141546 14046599 XCTD-1 Auto MK-150N
201409180349 14046597 XCTD-1 Auto MK-150N
201409180427 14046675 XCTD-1 Auto MK-150N
201409180440 14046676 XCTD-1 Auto MK-150N
201409180452 14046682 XCTD-1 Auto MK-150N
201409180505 14046679 XCTD-1 Auto MK-150N
201409180516 14046678 XCTD-1 Auto MK-150N
201409180834 14046600 XCTD-1 Auto MK-150N
201409180846 14046681 XCTD-1 Auto MK-150N
201409180859 14046680 XCTD-1 Auto MK-150N
201409180911 11011574 XCTD-1 Auto MK-150N
201409180924 11011575 XCTD-1 Auto MK-150N
201409180936 11011573 XCTD-1 Auto MK-150N
201409190253 11011578 XCTD-1 Auto MK-150N
201409190306 11011579 XCTD-1 Auto MK-150N
201409190320 11011577 XCTD-1 Auto MK-150N
201409190333 11011581 XCTD-1 Auto MK-150N
201409190353 11011580 XCTD-1 Auto MK-150N
201409210118 14015279 XCTD-1 Auto MK-150N
201409240352 14046685 XCTD-1 Auto MK-150N
201409240405 12057600 XCTD-1 Auto MK-150N
201409240417 14046677 XCTD-1 Auto MK-150N
201409240428 12036666 XCTD-1 Auto MK-150N
201409240441 12036664 XCTD-1 Auto MK-150N
201409240453 11011576 XCTD-1 Auto MK-150N
201409250204 14015282 XCTD-1 Auto MK-150N
201409250245 14015277 XCTD-1 Auto MK-150N
201409250319 12036663 XCTD-1 Auto MK-150N
201409250554 14046692 XCTD-1 Auto MK-150N
201409250623 14015276 XCTD-1 Auto MK-150N
201409250651 14015280 XCTD-1 Auto MK-150N
201409250717 14015285 XCTD-1 Auto MK-150N
201409251839 14015278 XCTD-1 Auto MK-150N
201409252157 14015286 XCTD-1 Auto MK-150N
201409252302 14015284 XCTD-1 Auto MK-150N
201409260011 14015281 XCTD-1 Auto MK-150N
201410031300 14015283 XCTD-1 Auto MK-150N
(1) For sensor's stablility, values of less than 1 m for temperature and less than 3 m for salinity are replaced by missing values, respectively, based on manufacturer's recommendation.

(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.
: MR14-05
: Processed (DMO)-QCed
: JAMSTEC
: Depth, Temperature, Salinity
:
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
201409052106.dat
201409052133.dat
201409052203.dat
201409052232.dat
201409060111.dat
201409060139.dat
201409060215.dat
201409060248.dat
201409060325.dat
201409060411.dat
201409060458.dat
201409060924.dat
201409061042.dat
201409061454.dat
201409061537.dat
201409111005.dat
201409111036.dat
201409111510.dat
201409111559.dat
201409140856.dat
201409140922.dat
201409140948.dat
201409141455.dat
201409141520.dat
201409141546.dat
201409180349.dat
201409180427.dat
201409180440.dat
201409180452.dat
201409180505.dat
201409180516.dat
201409180834.dat
201409180846.dat
201409180859.dat
201409180911.dat
201409180924.dat
201409180936.dat
201409190253.dat
201409190306.dat
201409190320.dat
201409190333.dat
201409190353.dat
201409210118.dat
201409240352.dat
201409240405.dat
201409240417.dat
201409240428.dat
201409240441.dat
201409240453.dat
201409250204.dat
201409250245.dat
201409250319.dat
201409250554.dat
201409250623.dat
201409250651.dat
201409250717.dat
201409251839.dat
201409252157.dat
201409252302.dat
201409260011.dat
201410031300.dat
ex_read2.f (Sample Program)
Observation List
The list of observation is shown as follows.
Observation Time and Date Lat. [°] Lon. [°]
201409052106 2014-09-05 21:08 74.0755 -163.7988
201409052133 2014-09-05 21:37 74.1523 -163.5996
201409052203 2014-09-05 22:06 74.2288 -163.3998
201409052232 2014-09-05 22:34 74.3045 -163.2003
201409060111 2014-09-06 01:12 74.3870 -162.9305
201409060139 2014-09-06 01:41 74.4621 -162.7496
201409060215 2014-09-06 02:17 74.5665 -162.5000
201409060248 2014-09-06 02:51 74.6563 -162.2511
201409060325 2014-09-06 03:26 74.7486 -162.0004
201409060411 2014-09-06 04:12 74.8773 -161.6618
201409060458 2014-09-06 04:59 75.0036 -161.3308
201409060924 2014-09-06 09:25 74.8746 -161.0000
201409061042 2014-09-06 10:43 74.6250 -160.9955
201409061454 2014-09-06 14:55 74.5040 -161.3345
201409061537 2014-09-06 15:39 74.6231 -161.6661
201409111005 2014-09-11 10:06 74.5678 -162.4996
201409111036 2014-09-11 10:39 74.6563 -162.2506
201409111510 2014-09-11 15:11 74.8661 -161.6673
201409111559 2014-09-11 16:00 75.0003 -161.3343
201409140856 2014-09-14 09:00 74.6836 -162.1660
201409140922 2014-09-14 09:25 74.6171 -162.3325
201409140948 2014-09-14 09:50 74.5500 -162.5000
201409141455 2014-09-14 14:56 74.8171 -161.8340
201409141520 2014-09-14 15:21 74.8821 -161.6673
201409141546 2014-09-14 15:47 74.9503 -161.5008
201409180349 2014-09-18 03:51 74.9511 -161.4996
201409180427 2014-09-18 04:28 74.9186 -161.5831
201409180440 2014-09-18 04:41 74.8835 -161.6680
201409180452 2014-09-18 04:53 74.8515 -161.7490
201409180505 2014-09-18 05:06 74.8165 -161.8343
201409180516 2014-09-18 05:18 74.7836 -161.9168
201409180834 2014-09-18 08:36 74.7165 -162.0813
201409180846 2014-09-18 08:48 74.6830 -162.1658
201409180859 2014-09-18 09:00 74.6504 -162.2503
201409180911 2014-09-18 09:13 74.6165 -162.3330
201409180924 2014-09-18 09:26 74.5818 -162.4170
201409180936 2014-09-18 09:38 74.5486 -162.4993
201409190253 2014-09-19 02:54 74.7200 -161.9171
201409190306 2014-09-19 03:08 74.6881 -161.8338
201409190320 2014-09-19 03:22 74.6556 -161.7488
201409190333 2014-09-19 03:35 74.6256 -161.6645
201409190353 2014-09-19 03:55 74.5930 -161.5861
201409210118 2014-09-21 01:19 74.7580 -162.0311
201409240352 2014-09-24 03:54 74.9500 -161.5058
201409240405 2014-09-24 04:06 74.9146 -161.5830
201409240417 2014-09-24 04:18 74.8798 -161.6663
201409240428 2014-09-24 04:30 74.8506 -161.7488
201409240441 2014-09-24 04:42 74.8168 -161.8331
201409240453 2014-09-24 04:54 74.7860 -161.9161
201409250204 2014-09-25 02:06 74.6551 -162.2508
201409250245 2014-09-25 02:46 74.5603 -162.5036
201409250319 2014-09-25 03:20 74.4668 -162.7540
201409250554 2014-09-25 05:56 74.3001 -163.1995
201409250623 2014-09-25 06:24 74.2265 -163.3991
201409250651 2014-09-25 06:52 74.1521 -163.5993
201409250717 2014-09-25 07:20 74.0753 -163.7993
201409251839 2014-09-25 18:40 72.8991 -168.2506
201409252157 2014-09-25 21:59 72.7498 -168.7506
201409252302 2014-09-25 23:04 72.5996 -168.2561
201409260011 2014-09-26 00:12 72.7503 -167.7501
201410031300 2014-10-03 13:02 45.9228 166.0831
: MR14-05
: Processed (DMO)-QCed
: JAMSTEC

XCTD 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 XCTD
3 8 - 22 Cruise ID a15
4 33 - 40 Date i8 YYYYMMDD (UTC)
5 42 - 45 Time i4 hhmm (UTC)
6 47 - 55 Latitude i2,a1,f5.2,a1 dd-mm.mmN(S)
7 57 - 66 Longitude i3,a1,f5.2,a1 ddd-mm.mmE(W)
8 68 - 71 Number of data lines i4
9 72 - 73 Terminator - CR+LF
  1. Data part
No. Column Content Unit Format Remarks
1 1 - 11 Depth m f11.1
2 12 - 22 Temperature deg-C f11.2 ITS-90
3 23 - 33 Salinity PSU f11.3 PSS-78
4 45 - 55 Flag - i11 1 - 7 : space
8 : flag of depth
9 : flag of temperature
10 : flag of salinity
11 : space
* reference : 'Definition of Quality Control Flags'
5 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

2019-08-31
An observation data was registerd.
2017-06-14
An observation data was registerd.
2016-10-31
An observation data was registerd.