MIRAI MR15-03 Leg2 Underway Thermosalinograph

Last Modified: 2017-06-29
: MR15-03 Leg2
: Processed (DMO)-QCed
: JAMSTEC
: Temperature, Salinity, Dissolved oxygen
:
OCEANS > OCEAN CHEMISTRY > OXYGEN
OCEANS > SALINITY/DENSITY > SALINITY
OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE

For Using Data

Data Management Office
See Terms and Conditions about constrain of use.
See Terms and Conditions about data citation.
Instrument:
Continuous sea surface water monitoring system (MR14-03 - )
Thermosalinograph measures the following surface parameters continuously.
- temperature
- salinity
- dissolved oxygen
Sea surface water is continuously pumped up at 4.5 meters depth to the sea surface monitoring laboratory and then flowed into each analysis equipment through a steel pipe and a vinyl-chloride pipe.
The flow rate of this system is controlled by some valves. Data are recorded in the personal computer.

• Temperature sensor
Model : SBE 38, Sea-Bird Electronics,Inc.
Serial number : 3852788-0457
Measurement range : -5 to 35 deg-C (ITS-90)
Sensor location : Bow thruster room
• Salinity sensor
MicroTSG (Thermosalinograph)
Model : SBE-45, Sea-Bird Electronics,Inc.
Serial number : 4552788-0264
Measurement range : [temperature] -5 to +35 deg-C (ITS-90), [conductivity] 0 to 7 S/m
Sensor location : Sea surface monitoring laboratory
• DO sensor
Model : OPTODE3835, AANDERAA Instruments.
Serial number : 1915
Measurement range : 0 to 500 µmol dm-3
Sensor location : Sea surface monitoring laboratory

After considering the accuracy of the sensors, the significant digit of data was changed as in the following list.
Data Raw (ASCII data) On this web site
Temperature 0.0001 [deg-C] 0.001 [deg-C]
Salinity 0.0001 [PSU] 0.001 [PSU]
Dissolved oxygen 0.01 [umol/kg] 0.1 [umol/kg]
* The unit of the dissolved oxygen was changed from ml/l into umol/kg since MR10-04.

Date/Time (UTC) Start/Stop Remarks
2015/10/09, 23:15 start 54-13.41N, 167-14.20W
2015/10/19, 05:30 stop 40-14.38N, 147-37.24E

Calibration Information is as follows.
(1) 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
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 (turbidity, fluorescence intensity, dissolved oxygen obtained by RINKO sensor) in additional to temperature, salinity, dissolved oxygen obtained by OPTODE sensor that has been opened to the public. Please contact us from "Contact Us" above if necessary.

(2)The drift that exceeded the sensor specification (0.003PSU/month) turned out from the comparison between analysis data and the sensor data about the salinity data. Please see calibration information for details.

Calibration Information
Figure: The comparison between analysis data and the sensor data
: MR15-03 Leg2
: Processed (DMO)-QCed
: JAMSTEC
: Temperature, Salinity, Dissolved oxygen
:
OCEANS > OCEAN CHEMISTRY > OXYGEN
OCEANS > SALINITY/DENSITY > SALINITY
OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE

Observation Map

Imagery reproduced from ...

Figures

Data List

File names
20151009.dat
20151010.dat
20151011.dat
20151012.dat
20151013.dat
20151014.dat
20151015.dat
20151016.dat
20151017.dat
20151018.dat
20151019.dat
ex_read2.f (Sample Program)
: MR15-03 Leg2
: Processed (DMO)-QCed
: JAMSTEC

TSG DMO

Format Description for the QCed Data
Each data file contains one line header and daily observation data.
  1. Header part
No. Column Content Format Remarks
1 1 Header ID a1 fixed as '#'
2 3 - 6 Data ID a4 TSG
3 8 - 22 Cruise ID a15 e.g. MRYY-XX_legx
4 68 - 71 Number of data lines i4
5 72 - 73 Terminator - CR+LF
  1. Data part
No. Column Content Unit Format Remarks
1 1 -  8 Date - i8 YYYYMMDD (UTC)
2 10 - 13 Time - i4 hhmm (UTC)
3 15 - 23 Latitude - i2,a1,f5.2,a1 dd-mm.mmN(S)
4 25 - 34 Longitude - i3,a1,f5.2,a1 ddd-mm.mmE(W)
5 35 - 45 Temperature deg-C f11.3 ITS-90
6 46 - 56 Salinity PSU f11.3 PSS-78
7 57 - 67 Dissolved oxygen µmol/kg f11.1
8 68 - 78 Flag - i11 1- 6 : space
7 : flag of date/time
8 : flag of latitude/longitude
9 : flag of temperature
10 : flag of salinity
11 : flag of dissolved oxygen
9 79 - 80 Terminator - - CR+LF
* This format has been applied since MR10-04 cruise of R/V Mirai.
* The unit of the dissolved oxygen was changed from ml/l into µmol/kg
* Temperature, Salinity, Dissolved oxygen: Missing value is presented by '-5', and error value is presented by '-9'.

Definition of Quality Control Flags
  1. Observed Level Flags
  2. 0 - accepted value
    1 - range outlier ( outside of broad range check )
    A - doubtful value
    N - missing value

  3. Date and time flag (Thermosalinograph only)
  4. 0 - accepted data and time
    1 - failed duplicate/missing/incorrect date and time

  5. Position flag (Thermosalinograph only)
  6. 0 - accepted position
    1 - failed estimated ship speed check including missing/incorrect position

    For details about range set of temperature, salinity and oxygen data, please refer the web site of NODC (National Oceanographic Data Center) from the following link for quality control procedure.

Related Information

Update History

2017-06-29
An observation data was registerd.
2016-04-23
An observation data was registerd.