[SAP]
Sapporo 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 Prove TR-61C, KAIJO, Japan)
    Air temperature Three-dimensional sonic anemometer-thermometer (DA600-3T Prove 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 28m
    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) 41.3m Pyranometer (CM6F, Kipp & Zonen, Netherland)
    Global solar radiation (outgoing) 39.2m Pyranometer (CM6B, Kipp & Zonen, Netherland)
    Long-wave radiation (incoming) 41.3m Infrared radiometer with fan (PIR, Eppley, USA)
    Long-wave radiation (outgoing) 39.2m Infrared radiometer (PIR, Eppley, USA)
    Net radiation 39.2m Net radiometer (Q*7, REBS, USA)
    PPFD (incoming) 41.3m Quantum sensor (LI-190SA, LI-COR, USA)
    PPFD (outgoing) 39.2m Quantum sensor (LI-190SA, LI-COR, USA)
    Direct/diffuse radiation - -
    Direct/diffuse PPFD - -
    Air temperature 33.5, 29.6, 25.8, 20.1, 16.3, 10.5, 2.7m Platinum resistance thermometer (HMP45D, VAISALA, Finland)
    Humidity 33.5, 29.6, 25.8, 20.1, 16.3, 10.5, 2.7m 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 Heat flux plate(MF-81,EKO,Japan)
    Soil water content 0.07, 0.15, 0.45, 0.75m TDR (CS-615, Campbell, USA)
    Wind speed 33.5, 29.6, 25.8, 20.1, 16.3, 10.5, 2.7m Windmill anemometer(CYG-5103, YOUNG, USA)
    Wind direction 41.3m Vane (A-802, YOKOGAWA, Japan)
    Barometric pressure 28,1.5m Barometer (PTB-210 at 28m and PTB101 at 1.5m, VAISALA, Finland)
    Precipitation 1.8m Tipping bucket raingauge
    CO2 concentration 29.6, 25.8, 20.1, 16.3, 10.5, 2.7m Closed-path CO2/H2O analyzer (LI-6262, LI-COR, USA)

    Other

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