[API]
Appi forest meteorology research site
  • Site Description
  • Observation
  • Researchers
  • Note

    • Eddy correlation method

    System 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 Capacitive hygrometer (HMP45A, VAISALA, Finland)
    CO2 closed-path (LI-6262, LI-COR, USA)
    Measurement height 31m
    Sampling frequency 10Hz
    Averaging time 30min
    Data logger DRM3b, TEAC, Japan
    Data storage MO
    Original data (Raw data or statistics) Raw data

    Meteorology

    Observation items Levels / Depth Instrument
    Global solar radiation (incoming) 31m Pyranometer (CM6F, Kipp & Zonen, Netherland)
    Global solar radiation (outgoing) 31m Pyranometer (CM6B, Kipp & Zonen, Netherland)
    Long-wave radiation (incoming) 31m Infrared radiometer with fan (PIR, Eppley, USA)
    Long-wave radiation (outgoing) 31m Infrared radiometer (PIR, Eppley, USA)
    Net radiation - -
    PPFD (incoming) 31, 18, 15, 12, 9, 6, 3m Quantum sensor (LI-190B, LI-COR, USA)
    PPFD (outgoing) 31,3m Quantum sensor (LI-190B, LI-COR, USA)
    Direct/diffuse radiation - -
    Direct/diffuse PPFD - -
    Air temperature 31, 24, 20, 18, 15, 12, 9, 6, 3m Platinum resistance thermometer (HMP45D, VAISALA, Finland)
    Humidity 31, 24, 20, 18, 15, 12, 9, 6, 3m Capacitive hygrometer (HMP45D, VAISALA, Finland)
    Soil temperature 0.02, 0.05, 0.1, 0.2, 0.4, 0.8m Platinum resistance thermometer
    Soil heat flux 0.02m Thermopile heat flux sensor (MF-81,EKO,Japan)
    Soil water content 0.05,0.15,0.30,0.50, 0.80,0.95, TDR sensor(CS615,Campbell,USA)
    Wind speed 31, 24, 20, 18, 15,12, 9, 6, 3m 3-cups anemometer (WM-30P, Ikeda, Japan)
    Wind direction 31m Vane (A-802, YOKOGAWA, Japan)
    Barometric pressure 5m Silicon capacitive absolute pressure sensor (PTB-100,VAISALA,Finland)
    Precipitation 4.5m Rain gauge(B-071,YOKOGAWA,Japan)
    CO2 concentration 31,24,20,18,15,12,9, 3m Closed-path CO2/H2O analyzer (LI-6262, LI-COR, USA)

    Other

    Soil respiration Continuous
    Photosynthesis Occasionally
    Ecological Investigation Tree heights, stand density, diameter,