[SZN]
Hokkaido University Shizunai Livestock Farm
  • Site Description
  • Observation
  • Researchers
  • Note

    • Eddy Correlation Method

    System Open-path
    Wind speed Sonic anemometer-thermometer (CSAT3, Campbell, USA)
    Air temperature Sonic anemometer-thermometer (CSAT3, Campbell, USA)
    Water Vapor NDIR (LI-7500, LICOR, USA)
    CO2 NDIR (LI-7500, LICOR, USA)
    Measurement height 2.51m at mature plot, 2.42m at fertilizer plot
    Sampling frequency 10Hz
    Averaging time 30min
    Data logger CR23X-4M (Campbell, USA)
    Data storage CF
    Original data (Raw data or statistics) Raw data

    Meteorology

    Observation items Levels / Depth Instrument
    Global solar radiation (incoming) - -
    Global solar radiation (outgoing) - -
    Long-wave radiation (incoming) - -
    Long-wave radiation (outgoing) - -
    Net radiation - -
    PPFD (incoming) 1.6m Quantum sensor (LI-COR LI-190SA)
    PPFD (outgoing) 1.6m Quantum sensor (LI-COR LI-190SA)
    Direct/diffuse radiation - -
    Direct/diffuse PPFD - -
    Air temperature 2.5m Ventilated Pt resistance thermometer (HMP-45A, VAISALA) at mature field
    Humidity 2.5m Capacitive hygrometer (HMP45A, VAISALA)
    Soil temperature -0.05, -0.1, -0.5m T-type thermocouple (T-soil4, MeiwaShoji)
    Soil heat flux - -
    Soil water content -0.05, -0.1, -0.5m (EC20, DECAGON)
    Wind speed 2.51m at mature plot, 2.42m at fertilizer plot Sonic anemometer-thermometer(CSAT3, Campbell)
    Wind direction 2.51m at mature plot, Sonic anemometer-thermometer(CSAT3, Campbell)
    Barometric pressure 2.42m at fertilizer plot Sonic anemometer-thermometer(CSAT3, Campbell)
    Precipitation - -
    CO2 concentration - -

    Other

    Soil respiration Static closed chamber
    Photosynthesis Static closed chamber
    Ecological Investigation Static closed chamber