eLXg {bNX: Information of Sensors on JKEO6


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The most sensors on JKEO6 except Wind speed/direction and Relative humidity are as same as on JKEO5 and TRITON buoy. The table below identifies the types of sensors used on JKEO6 moorings and lists their specifications. As same as JKEO5, JKEO6 has additional meteorological sensor, Vaisala Weather Transmitter WXT520, as a backup system.

Last updated on November 26, 2012

Measurement

Sensor type

Manufacturer: Model #

Resolution

Range

Accuracy

Ref.

Wind speed

R. M. Young Model 85000

JAMMET-WND Ultra-sonic type

Model Y85000

0.1 m s-1

0 to 70 m s-1 (threshold ca. 1 m s-1)

}2-3 %

[7]

Wind direction

PCI

TCM2.6

(compass)

JAMMET-WND Ultra-sonic type

Model Y85000

1

0 to 360

}1

[7]

Air temperature

Rotronic MP-101A sensor

JAMMET-HRH Model RM103A

0.01C

-40 to 60 C

}0.05 C

[7]

Relative Humidity

Rotronic MP-100H sensor

JAMMET-HRH Model RM103A

0.01 % RH

0-100 % RH

}0.3 % RH

[7]

Barometric Pressure

Drug Model PMP4000

JAMMET-BAR Model DP4000

0.02 hPa

800 to 1200 hPa (Note: 1)

0.3 hPa.

[7]

Downwelling shortwave radiation

Eppley Precision Spectral Pyranometer (PSP)

Star Engineering:@ ASIMET Shortwave Radiation Module (SWR)

0.1 W m-2

0 to 1400
W m-2
(Note: 1)

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]

Water Temperature

HOBO U12 Deep Ocean Water Temperature Logger

U12-015-03

0.025C

-40 to 125 C

}0.22 C

[8]

Sea Bird SBE37-SM (MicroCAT) etc.

Sea surface and subsurface temperature

ultra-stable aged thermistor

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

0.0001C

-3 to 33 C (Note: 2)

}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 6.5
S m-1
(Note: 2)

}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]

NORTEK Aquadopp current meter (IM400)

Current velocity

the Doppler shift measurement

NORTEK

---

} 3m/s (Note: 2)

1% of measured value } 0.5 cm/s

[6]

Temperature

Thermistor embedded in head

NORTEK

0.01C

–4C to 40C

0.1C

[6]

Pressure

Piezoresistive

NORTEK

Better than 0.005% of full scale per sample

0 to 400 m

0.5% full scale per sample

[6]

Vaisala Weather Transmitter WXT520

Wind speed

---

Vaisala WINDCAP®sensor

0.1 m/s

0 to 60 m/s

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

[5]

Wind direction

---

---

---

---

---

Not available

Air temperature

---

---

0.1 C

-52 to@ +60 C

}0.3 C

[5]

Relative Humidity

---

---

0.1 %RH

0 to 100 %RH

}3 %RH within
0 to 90
%RH

[5]

Barometirc pressure

---

---

0.1 hPa

600 to 1100 hPa

}0.5 hPa at 0 ... 30 C

[5]

Precipitation

---

Vaisala RAINCAP® Sensor

0.01 mm

0 to 200 mm/h

5%

[5]

 

Note:

1)    limited by data logger specification

2)    Applied only for real-time data due to data logger specification

 

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

[6] http://www.nortekusa.com/lib/data-sheets/datasheet-aquadopp

[7] http://www.jamstec.go.jp/maritec/e/

[8] http://www.onsetcomp.com/products/data-loggers/u12-015-03

 


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Ocean-Atmosphere Interaction Research Team,

Ocean Climate Change Research Program,

Research Institute 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
OCCRP
RIGC
JAMSTEC