eLXg {bNX: Sampling Information of the JKEO5


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The JKEO5 sampling is almost same with JKEO2, JKEO3 and JKEO4 based on the m-TRITON of which prototype is TRITON moorings in the tropical Pacific.

JKEO5 measures winds, sea surface air temperature, relative humidity, barometric pressure, precipitation, wave height, pCO2, sea surface temperature and salinity (SST and SSS), short wave and long wave radiation, subsurface temperatures and salinity, and water currents.

All data collected from the JKEO5 mooring except wave height and pCO2 are publicly available. Hourly surface and subsurface data from the JKEO5 mooring are transmitted in near real-time. In addition, spot values of Argos position data are transmitted opportunistically. Daily averaged surface and subsurface data from the JKEO5 mooring and higher resolution data recorded onboard the mooring will be made available in the data page in this web site in delay mode after their recovery.

The table below describes the sampling schemes for the JKEO5 moorings. Observation times in data files are assigned to the center of the averaging interval unless otherwise noted. For example, daily averages are computed starting at 0000 UTC and are assigned an observation "time stamp" of 1200 UTC.

Last Updated on May 19, 2011

Measurement

Sample rate

Sample period

Sample time

Data interval recorded in memory

Transmitted data

Wind speed and direction

Once per 10 min

1 min, 2 samples average

2358*-,
0008*-,...

10 min

Hourly mean

Air temperature and relative humidity

Once per 10 mine

1 min, 2 samples average

2358*-,
0008*-,...

10 min

Hourly mean

Short wave radiation

Once per 10 min

1 min, 2 samples average

2358*-,
0008*-,...

10 min

Hourly mean

Long wave radiation

Once per 10 min

1 min, 2 samples average

2358*-,
0008*-,...

10 min

Hourly mean

Sea surface and subsurface temperature, conductivity, and pressure

Once per 10 min

instantaneous

0000,
0010,...

60 min

Hourly value

Barometric Pressure

Once per 10 min

1 min

2358*-,
0008*-,...

10 min

Hourly mean

Precipitation

Once per 10 min

10 min

0000-,
0010-, , ,

10 min

Hourly mean

Current velocity

Once per 1 min

1 min

0000-,
0010-, , ,

10 min

Hourly mean

Wave height

TBA

TBA

TBA

TBA

TBA

pCO2

TBA

TBA

TBA

TBA

TBA

Vaisalar Weather Transmitter WXT520

Default

Default

0000-,
0010-, , ,

10 min

No

Sample time with * indicate that it is the time of sending to sensor a wakeup command, and the end time of sample is not fixed.


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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