MIRAI MR17-05C Expendable Conductivity-Temperature-Depth Profiler (XCTD)

Last Modified: 2019-11-29
: MR17-05C
: 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
201709020127 16027328 XCTD-1 Auto MK-150N
201709020221 16027342 XCTD-1 Auto MK-150N
201709020306 16027343 XCTD-1 Auto MK-150N
201709021224 16027326 XCTD-1 Auto MK-150N
201709021250 16027320 XCTD-1 Auto MK-150N
201709021314 16027327 XCTD-1 Auto MK-150N
201709021339 16027323 XCTD-1 Auto MK-150N
201709021404 16027324 XCTD-1 Auto MK-150N
201709021430 16027322 XCTD-1 Auto MK-150N
201709021455 16027321 XCTD-1 Auto MK-150N
201709021519 16027341 XCTD-1 Auto MK-150N
201709030539 16027352 XCTD-1 Auto MK-150N
201709030624 16027351 XCTD-1 Auto MK-150N
201709030718 16027349 XCTD-1 Auto MK-150N
201709030820 16027350 XCTD-1 Auto MK-150N
201709031339 16027345 XCTD-1 Auto MK-150N
201709031436 16027325 XCTD-1 Auto MK-150N
201709031531 16027403 XCTD-1 Auto MK-150N
201709041518 16027404 XCTD-1 Auto MK-150N
201709041702 16027346 XCTD-1 Auto MK-150N
201709042037 16027344 XCTD-1 Auto MK-150N
201709050157 16027347 XCTD-1 Auto MK-150N
201709050558 16027348 XCTD-1 Auto MK-150N
201709070104 16027353 XCTD-1 Auto MK-150N
201709070249 16027402 XCTD-1 Auto MK-150N
201709070431 16027406 XCTD-1 Auto MK-150N
201709070631 16027405 XCTD-1 Auto MK-150N
201709070817 16027410 XCTD-1 Auto MK-150N
201709071005 16027409 XCTD-1 Auto MK-150N
201709071208 16027408 XCTD-1 Auto MK-150N
201709071353 16027412 XCTD-1 Auto MK-150N
201709071537 16027411 XCTD-1 Auto MK-150N
201709071718 16027413 XCTD-1 Auto MK-150N
201709071909 16027407 XCTD-1 Auto MK-150N
201709072051 16027356 XCTD-1 Auto MK-150N
201709072235 16027355 XCTD-1 Auto MK-150N
201709080038 16027354 XCTD-1 Auto MK-150N
201709100837 16027359 XCTD-1 Auto MK-150N
201709101119 16027357 XCTD-1 Auto MK-150N
201709101512 16027360 XCTD-1 Auto MK-150N
201709101803 16027358 XCTD-1 Auto MK-150N
201709110800 16027361 XCTD-1 Auto MK-150N
201709120051 16027365 XCTD-1 Auto MK-150N
201709120127 16027366 XCTD-1 Auto MK-150N
201709120205 16027367 XCTD-1 Auto MK-150N
201709120243 16027370 XCTD-1 Auto MK-150N
201709120324 16027363 XCTD-1 Auto MK-150N
201709120406 16027362 XCTD-1 Auto MK-150N
201709121302 16027371 XCTD-1 Auto MK-150N
201709121351 16027375 XCTD-1 Auto MK-150N
201709121426 16027376 XCTD-1 Auto MK-150N
201709121501 16027369 XCTD-1 Auto MK-150N
201709121536 16027368 XCTD-1 Auto MK-150N
201709121612 16027372 XCTD-1 Auto MK-150N
201709122347 16027364 XCTD-1 Auto MK-150N
201709132250 17025025 XCTD-1 Auto MK-150N
201709132339 17025019 XCTD-1 Auto MK-150N
201709140029 17025020 XCTD-1 Auto MK-150N
201709140120 17025021 XCTD-1 Auto MK-150N
201709140210 17025027 XCTD-1 Auto MK-150N
201709140302 16027373 XCTD-1 Auto MK-150N
201709141347 17025028 XCTD-1 Auto MK-150N
201709141754 17025024 XCTD-1 Auto MK-150N
201709141909 17025026 XCTD-1 Auto MK-150N
201709141915 17025029 XCTD-1 Auto MK-150N
201709150136 17025032 XCTD-1 Auto MK-150N
201709150251 16027374 XCTD-1 Auto MK-150N
201709150607 17025034 XCTD-1 Auto MK-150N
201709150721 17025031 XCTD-1 Auto MK-150N
201709150835 17025038 XCTD-1 Auto MK-150N
201709150948 17025022 XCTD-1 Auto MK-150N
201709151100 17025023 XCTD-1 Auto MK-150N
201709151213 17025039 XCTD-1 Auto MK-150N
201709151327 17025036 XCTD-1 Auto MK-150N
201709151440 17025033 XCTD-1 Auto MK-150N
201709151554 17025030 XCTD-1 Auto MK-150N
201709151707 17025035 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.
: MR17-05C
: 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
201709020127.dat
201709020221.dat
201709020306.dat
201709021224.dat
201709021250.dat
201709021314.dat
201709021339.dat
201709021404.dat
201709021430.dat
201709021455.dat
201709021519.dat
201709030539.dat
201709030624.dat
201709030718.dat
201709030820.dat
201709031339.dat
201709031436.dat
201709031531.dat
201709041518.dat
201709041702.dat
201709042037.dat
201709050157.dat
201709050558.dat
201709070104.dat
201709070249.dat
201709070431.dat
201709070631.dat
201709070817.dat
201709071005.dat
201709071208.dat
201709071353.dat
201709071537.dat
201709071718.dat
201709071909.dat
201709072051.dat
201709072235.dat
201709080038.dat
201709100837.dat
201709101119.dat
201709101512.dat
201709101803.dat
201709110800.dat
201709120051.dat
201709120127.dat
201709120205.dat
201709120243.dat
201709120324.dat
201709120406.dat
201709121302.dat
201709121351.dat
201709121426.dat
201709121501.dat
201709121536.dat
201709121612.dat
201709122347.dat
201709132250.dat
201709132339.dat
201709140029.dat
201709140120.dat
201709140210.dat
201709140302.dat
201709141347.dat
201709141754.dat
201709141909.dat
201709141915.dat
201709150136.dat
201709150251.dat
201709150607.dat
201709150721.dat
201709150835.dat
201709150948.dat
201709151100.dat
201709151213.dat
201709151327.dat
201709151440.dat
201709151554.dat
201709151707.dat
ex_read2.f (Sample Program)
Observation List
The list of observation is shown as follows.
Observation Time and Date Lat. [°] Lon. [°]
201709020127 2017-09-02 01:29 71.9943 -155.5486
201709020221 2017-09-02 02:23 72.1733 -155.4998
201709020306 2017-09-02 03:08 72.3229 -155.4543
201709021224 2017-09-02 12:27 72.0830 -154.9990
201709021250 2017-09-02 12:51 72.1666 -155.0006
201709021314 2017-09-02 13:16 72.2496 -155.0036
201709021339 2017-09-02 13:41 72.3333 -154.9976
201709021404 2017-09-02 14:06 72.4165 -155.0000
201709021430 2017-09-02 14:31 72.5000 -154.9986
201709021455 2017-09-02 14:56 72.5831 -154.9985
201709021519 2017-09-02 15:21 72.6666 -155.0001
201709030539 2017-09-03 05:40 72.4703 -155.4141
201709030624 2017-09-03 06:26 72.4063 -154.9995
201709030718 2017-09-03 07:23 72.3123 -154.4988
201709030820 2017-09-03 08:21 72.2186 -153.9990
201709031339 2017-09-03 13:41 72.0313 -152.9991
201709031436 2017-09-03 14:37 71.9378 -152.5003
201709031531 2017-09-03 15:33 71.8433 -152.0003
201709041518 2017-09-04 15:19 71.5021 -151.5153
201709041702 2017-09-04 17:05 71.6803 -152.5000
201709042037 2017-09-04 20:40 71.8770 -153.5000
201709050157 2017-09-05 01:59 72.0133 -154.5025
201709050558 2017-09-05 06:00 72.1726 -155.4995
201709070104 2017-09-07 01:13 72.0000 -155.0004
201709070249 2017-09-07 02:51 72.3335 -155.1675
201709070431 2017-09-07 04:33 72.6671 -155.3320
201709070631 2017-09-07 06:33 73.0005 -155.6083
201709070817 2017-09-07 08:19 73.3343 -155.7558
201709071005 2017-09-07 10:06 73.6668 -155.9155
201709071208 2017-09-07 12:10 74.0001 -156.1653
201709071353 2017-09-07 13:55 74.3333 -156.3145
201709071537 2017-09-07 15:38 74.6665 -156.4633
201709071718 2017-09-07 17:20 75.0001 -156.5911
201709071909 2017-09-07 19:10 75.3333 -156.7818
201709072051 2017-09-07 20:53 75.6668 -156.9081
201709072235 2017-09-07 22:37 76.0000 -157.0368
201709080038 2017-09-08 00:40 76.3336 -157.1713
201709100837 2017-09-10 08:39 72.3768 -156.4923
201709101119 2017-09-10 11:21 72.6294 -157.5016
201709101512 2017-09-10 15:14 72.9191 -158.4998
201709101803 2017-09-10 18:05 73.1378 -159.5029
201709110800 2017-09-11 08:02 73.3890 -160.1836
201709120051 2017-09-12 00:52 73.5006 -159.9966
201709120127 2017-09-12 01:29 73.6250 -160.0011
201709120205 2017-09-12 02:07 73.7500 -159.9998
201709120243 2017-09-12 02:45 73.8748 -159.9968
201709120324 2017-09-12 03:27 73.9990 -160.0135
201709120406 2017-09-12 04:08 74.0001 -160.5000
201709121302 2017-09-12 13:04 73.5818 -161.6131
201709121351 2017-09-12 13:53 73.5010 -162.0149
201709121426 2017-09-12 14:28 73.6241 -161.9891
201709121501 2017-09-12 15:03 73.7505 -162.0011
201709121536 2017-09-12 15:38 73.8751 -161.9980
201709121612 2017-09-12 16:14 74.0001 -161.9998
201709122347 2017-09-12 23:50 73.6165 -162.7463
201709132250 2017-09-13 22:51 73.4166 -160.8511
201709132339 2017-09-13 23:41 73.5833 -160.9708
201709140029 2017-09-14 00:32 73.7501 -161.0951
201709140120 2017-09-14 01:22 73.9165 -161.2175
201709140210 2017-09-14 02:12 74.0836 -161.3348
201709140302 2017-09-14 03:03 74.2503 -161.4608
201709141347 2017-09-14 13:49 74.7613 -161.9621
201709141754 2017-09-14 17:56 75.0000 -162.9998
201709141909 2017-09-14 19:11 75.0003 -164.0016
201709141915 2017-09-14 19:19 74.9926 -164.0713
201709150136 2017-09-15 01:38 75.0003 -166.0031
201709150251 2017-09-15 02:53 75.0000 -167.0006
201709150607 2017-09-15 06:09 75.0000 -168.0001
201709150721 2017-09-15 07:23 75.0001 -169.0011
201709150835 2017-09-15 08:37 74.9998 -169.9991
201709150948 2017-09-15 09:50 75.0000 -170.9993
201709151100 2017-09-15 11:02 75.0003 -171.9988
201709151213 2017-09-15 12:15 75.0001 -172.9993
201709151327 2017-09-15 13:29 74.9996 -173.9998
201709151440 2017-09-15 14:42 75.0000 -175.0013
201709151554 2017-09-15 15:56 75.0003 -176.0000
201709151707 2017-09-15 17:09 75.0000 -177.0000
: MR17-05C
: 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

2019-11-29
An observation data was registerd.