eLXg {bNX: Information of Sensors on JKEO4


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The sensors on JKEO4 are as same as on JKEO2, JKEO3 and TRITON buoy. The table below identifies the types of sensors used on JKEO4 moorings and lists their specifications. JKEO4 has additional meteorological sensor, Vaisala Weather Transmitter WXT520, as a backup system.

Last updated on December 23, 2009

Measurement

Sensor type

Manufacturer: Model #

Resolution

Range

Accuracy

Ref.

Wind speed

R.M. Young 5103 wind monitor

Star Engineering:@ ASIMET Propeller and Vane Wind Module (WND)

0.01 m s-1

0 to 60 m s-1 (threshold ca. 1 m s-1)

}1 %

[1]

Wind direction

R.M. Young 5103 wind monitor

Star Engineering:@ ASIMET Propeller and Vane Wind Module (WND)

0.1

0 to 360

3

[1]

Air temperature

Rotronic MP-101A sensor

Star Engineering:@ ASIMET Relative Humidity & Air Temperature Module (HRH)

0.02C

-40 to 60C

}0.05 C

[1]

Relative Humidity

Rotronic MP-101A sensor

Star Engineering:@ ASIMET Relative Humidity & Air Temperature Module (HRH)

0.01 % RH

0-100 % RH

}1 % RH

[1]

Downwelling shortwave radiation

Eppley Precision Spectral Pyranometer (PSP)

Star Engineering:@ ASIMET Shortwave Radiation Module (SWR)

0.1 W m-2

0 to 2800
W m-2

2 W m-2

[1]

Downwelling longwave radiation

Eppley Precision Infrared Radiometer (PIR)

Star Engineering:@ ASIMET Longwave Radiation Module (LWR)

0.1 W m-2

0 to 700
W m-2

2 W m-2

[1]

Sea surface and subsurface temperature

ultra-stable aged thermistor

Sea Bird Electronics: SBE37-SM (MicroCAT),
SBE39-IM,
SBE37-IM

0.0001C

-5 to 35C

}0.002C


[2]
[4]
[3]

Sea surface and subsurface Salinity

ultra-precision Wien-Bridge oscillator

Sea Bird Electronics: SBE37-SM (MicroCAT),
SBE37-IM

0.00001
S m-1

0 to 7 S m-1

}0.0003
S m-1


[2]
[3]

Water pressure

Druck sensor

Sea Bird Electronics: SBE37-SM (MicroCAT),
SBE39-IM

0.002% FS

 

7000 m

1000 m

}0.1% FS


[2]
[4]

Vaisala Weather Transmitter WXT520

Wind speed

Vaisala WINDCAP®sensor

0.1 m/s

0 ... 60 m/s

}0.3 m/s or }3%, whichever is greater

[5]

Wind direction

 

Not available

Air temperature

0.1 C

-52 ... +60 C

}0.3 C

[5]

Relative Humidity

0.1 %RH

0 ... 100 %RH

}3 %RH within 0 ... 90 %RH

[5]

Barometirc pressure

0.1 hPa

600 ... 1100 hPa

}0.5 hPa at 0 ... 30 C

[5]

Precipitation

Vaisala RAINCAP® Sensor

0.01 mm

 

5%

[5]

 

References

[1] http://frodo.whoi.edu/asimet/asimet_module_specs.html,
@@
http://www.whoi.edu/instruments/viewInstrument.do?id=12827,
@@ http://www.whoi.edu/instruments/viewInstrument.do?id=14686#15228

[2] http://www.seabird.com/products/spec_sheets/37smdata.htm

[3] http://www.seabird.com/products/spec_sheets/37imdata.htm

[4] http://www.seabird.com/products/spec_sheets/39imdata.htm

[5] http://www.vaisala.com/files/WXT520_Datasheet_in_English.pdf

 


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Kuroshio Transport and Surface Flux Group,

Ocean General Circulation Observational Research Program,

Institute of Observational Research for Global Change (IORGC),

Japan Agency for Marine-Earth Science and Technology (JAMSTEC)

2-15 Natsushima-cho Yokosuka-city,Kanagawa, 237-0061, Japan

JKEO web master
OGCORP
IORGC
JAMSTEC