[HEF]
Hitsujigaoka Experimental Forest

Eddy Correlation Method

System	band-pass eddy covariance system (latent heat flux, continuous) and an eddy covariance using an Open- path IRGA (latent heat and CO2 flux, irregular and discontinuous )
Wind speed	Three-dimensional sonic anemometer-thermometer (DA600-3T, KAIJO, Japan)
Air temperature	Three-dimensional sonic anemometer-thermometer (DA600-3T Probe TR-61C, KAIJO, Japan)
Water Vapor	Bandpass eddy covariance (HMP35A, VAISALA, Finland), Open-path (E-009A, Advanet, Japan)
CO2	Open-path (E-009A, Advanet, Japan)
Measurement height	8.51m
Sampling frequency	10Hz
Averaging time	1200seconds in a half hour
Data logger	DrM2a, TEAC, Japan
Data storage	Magnetic Optical Disk
Original data (Raw data or statistics)	Raw data

Meteorology

Observation items	Levels / Depth	Instrument
Global solar radiation (incoming)	12m	Pyranometer (MF-43F, MS-42, EKO, Japan)
Global solar radiation (outgoing)	12m	Pyranometer (MS-42, EKO, Japan)
Long-wave radiation (incoming)	20m	Infrared radiometer with fan (PIR, Eppley, USA) on the top of the building
All-wave radiation (outgoing)	12m	Net radiometer ( CN-11, EKO, Japan)
Net radiation	12m	Net radiometer ( CN-11, EKO, Japan)
PPFD (incoming)	-	-
PPFD (outgoing)	-	-
Direct/diffuse radiation	-	-
Direct/diffuse PPFD	-	-
Air temperature	9.2, 1.7m	Platinum resistance thermometer (HMP35D, VAISALA, Finland)
Humidity	9.2, 1.7m	Capacitive hygrometer (HMP35D, VAISALA, Finland)
Soil temperature	0.01, 0.1, 0.23m	Platinum resistance thermometer
Soil heat flux	-	-
Soil water content	-	-
Wind speed	9.6, 1.7m	3-cups anemometer (AC-750, Makino, Japan; WM-30P, Ikeda, Japan)
Wind direction	12m	Wind Vane (Makino, Japan)
Barometric pressure	1.2m	Barometer (PTB-100, VAISALA, Finland)
Precipitation	1.8m	Tipping bucket raingauge (0.5 mm per tipping)
CO2 concentration	-	-

Other

Soil respiration	-
Photosynthesis	-
Ecological Investigation	-