[KZW]
Karuizawa
  • Site Description
  • Observation
  • Researchers
  • Note

    • Eddy Correlation Method

    System Open- and closed-path system (CO2 flux, latent heat flux)
    Wind speed Three-dimensional sonic anemometer-thermometer (USA-1, Metek GnbH, Germany)
    Air temperature Three-dimensional sonic anemometer-thermometer (USA-1, Metek GnbH, Germany), Platinum resistance thermometer (HMP45A, VAISALA, Finland)
    Water Vapor Open-path (LI-7500, LI-COR, USA)
    CO2 Open- and Closed-path CO2/H2O analyzers (LI-7500 and LI-7000, LI-COR, USA)
    Measurement height 28m
    Sampling frequency 10Hz
    Averaging time 30min
    Data logger DRM3_Mk2, TEAC, Japan
    Data storage MO
    Original data (Raw data or statistics) Raw data
    Scintillometer (86m path length, 28, 22m height) SLS40A, Scintec AG., Germany

    Meteorology

    Observation items Levels / Depth Instrument
    Global solar radiation (incoming) 28m Radiometer (MR-40, Eko, Japan,; CNR-1, Kipp & Zonen, Netherlands)
    Global solar radiation (outgoing) 28m Radiometer (MR-40, Eko, Japan,; CNR-1, Kipp & Zonen, Netherlands)
    Long-wave radiation (incoming) 28m Radiometer (MR-40, Eko, Japan,;CNR-1, Kipp & Zonen, Netherlands)
    Long-wave radiation (outgoing) 28m Radiometer (MR-40, Eko, Japan,; CNR-1, Kipp & Zonen, Netherlands)
    Net radiation 28m Radiometer (MR-40, Eko, Japan,; CNR-1, Kipp & Zonen, Netherlands)
    PPFD (incoming) 28, 2(two pints) m Quantum sensor (PAR-01L, Prede, Japan)
    PPFD (outgoing) 28m Quantum sensor (PAR-01L, Prede, Japan)
    Air temperature 28, 21, 13.6, 8.5, 3 m Platinum resistance thermometers and capacitive hygrometers (HMP45A, Vaisala, Finland)
    Humidity 28, 21, 13.6, 8.5, 3 m Platinum resistance thermometers and capacitive hygrometers (HMP45A, Vaisala, Finland)
    Soil temperature -0.02, -0.05, -0.2, -0.4, -0.6, -0.8, -1.2 m Platinum resistance thermometer
    Soil water content -0.1, -0.2, -0.4, -0.6 m TDR sensor (CS615, Campbell)
    Wind speed 28, 24, 21, 17, 13.6, 8.5, 3 m Sonic anemometer (MA-130, Eko, Japan, Windsonic, Gill, UK)
    Wind direction 28, 24, 21, 17, 13.6, 8.5, 3 m Sonic anemometer (MA-130, Eko, Japan, Windsonic, Gill, UK)
    Barometric pressure 3 m Barometer (PTB100, Vaisala, Finland)
    Precipitation 15 m Tipping-bucket rainguage (Davis, USA)
    CO2 concentration 28, 21, 13.6, 8.3, 3.0m Closed-path CO2/H2O analyzer (LI-7000, LI-COR)

    Other

    Soil respiration Occasionally
    Photosynthesis Occasionally
    Ecological Investigation Tree heights, stand density, diameter, LAI (estimated from litter fall)
    O3 and SO2 profile 2004 - 2005
    Stable isotope of C in air layer, Organic carbon contents of soil and soil water Occasionally