[KWG]
Kawagoe forest meteorology research site

Eddy correlation method

System	closed-path system (CO2 flux)
Wind speed	Three-dimensional sonic anemometer-thermometer (DAT300, KAIJO, Japan)
Air temperature	Three-dimensional sonic anemometer-thermometer (DAT300, KAIJO, Japan ), Platinum resistance thermometer (HMP35D, VAISALA, Finland)
Water Vapor	Capacitance hygrometer (HMP45D, Vaisala)
CO2	closed-path (LI-6262, LI-COR, USA)
Measurement height	20m
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)	25m	Pyranometer (MR22, EKO,, Japan etc.)
Global solar radiation (outgoing)	25m	Pyranometer (MR22, EKO,, Japan etc.)
Long-wave radiation (incoming)	25ｍ	Epply PIR
Long-wave radiation (outgoing)	25m	Epply PIR
Net radiation	25m	Net radiometer (MF-11, EKO, Japan)
PPFD (incoming)	25, 2m	Quantum sensor (ML-020P, EKO, Japan)
PPFD (outgoing)	-	-
Direct/diffuse radiation	-	-
Direct/diffuse PPFD	-	-
Air temperature	25.5, 21, 17.8, 16, 14, 12, 9, 5, 2.5m	Platinum resistance thermometer (HMP35D, VAISALA, Finland)
Humidity	25.5, 21, 17.8, 16, 14, 12, 9, 5, 2.5m	Capacitive hygrometer (HMP35D, VAISALA, Finland) Psychrometer (MH-020L, EKO, Japan)
Soil temperature	0, 0.02, 0.05, 0.1, 0.25, 0.5m	Platinum resistance thermometer
Soil heat flux	0.02m	Heat flux plate (MF-81, EKO, Japan)
Soil water content	0.05, 0.2, 0.5, 1m	TDR soil moisture sensor (TRIME, IMKO, Germany)
Wind speed	25.9, 21, 18, 16m	3-cups anemometer (WM-30P, Ikeda, Japan)
Wind direction	25m	Vane (WD-16, Ikeda, Japan)
Barometric pressure	2.0m	Capacitance barometer (PTB-100A, Vaisala, Finland))
Precipitation	0.5m	Rain gage of 0.5mm/pulse (RT-5, Ikeda, Japan)
CO2 concentration	16, 12, 8, 4m	Closed-path CO2/H2O analyzer (LI-6262, LI-COR, USA)

Other

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