[FJY]
Fujiyoshida forest meteorology research site
  • Site Description
  • Observation
  • Researchers
  • Note

    • Eddy correlation method

    System Open- (CO2 flux, latent heat flux) and closed-path system (CO2 flux)
    Wind speed Three-dimensional sonic anemometer-thermometer (DA600-3T Probe TR-61C, KAIJO, Japan)
    Air temperature Three-dimensional sonic anemometer-thermometer (DA600-3T Probe TR-61C, KAIJO, Japan), Platinum resistance thermometer (HMP45A, VAISALA, Finland)
    Water Vapor Open-path (LI-7500, LI-COR, USA), bandpass (HMP45A, VAISALA, Finland)
    CO2 Open-path (LI-7500, LI-COR, USA), closed-path (LI-6262, LI-COR, USA)
    Measurement height 25.4m
    Sampling frequency 5Hz
    Averaging time 30min
    Data logger DRM3a, TEAC, Japan
    Data storage MO
    Original data (Raw data or statistics) Raw data

    Meteorology

    Observation items Levels / Depth Instrument
    Global solar radiation (incoming) 32m Pyranometer (CM6F, Kipp & Zonen, Netherland)
    Global solar radiation (outgoing) 29m Pyranometer (CM6B, Kipp & Zonen, Netherland)
    Long-wave radiation (incoming) 32m Infrared radiometer with fan (PIR, Eppley, USA)
    Long-wave radiation (outgoing) 29m Infrared radiometer (PIR, Eppley, USA)
    Net radiation - -
    PPFD (incoming) 32m Quantum sensor (LI-190, LI-COR, USA)
    PPFD (outgoing) 29m Quantum sensor (LI-190, LI-COR, USA)
    Direct/diffuse radiation - -
    Direct/diffuse PPFD - -
    Air temperature 32, 27, 23, 21, 19, 14, 9, 3m Platinum resistance thermometer (HMP45D, VAISALA, Finland)
    Humidity 32, 27, 23, 21, 19, 14, 9, 3m Capacitive hygrometer (HMP45D, VAISALA, Finland)
    Soil temperature 0, 0.02, 0.05, 0.1, 0.25, 0.5m thermocouple
    Soil heat flux 0.05m Heat flux plate (MF-81, EKO, Japan)
    Soil water content - -
    Wind speed 32, 27, 23, 21, 19, 13, 10, 4m Cup anemometer (WM-30P, Ikeda, Japan)
    Wind direction 32m Vane (A-802, YOKOGAWA, Japan)
    Barometric pressure 25, 2m Barometer (PTB210 at 25m and PTB-100 at 2m, VAISALA, Finland)
    Precipitation 1m Tipping bucket raingauge with heater (B071-00, YOKOGAWA, Japan)
    CO2 concentration 25, 23, 19, 13, 9, 3m Closed-path CO2/H2O analyzer (LI-6262, LI-COR, USA)

    Other

    Soil respiration Occasionally
    Photosynthesis Occasionally
    Ecological Investigation Tree heights, stand density, diameter, biomass (Ohtsuka et al., 2001, Veg. Sci.,vol.20, p.43-54)