[AKO]
Akou green belt

Eddy Correlation Method

System	Closed-path system (2000.1.1 - 2002.12) Open-path system (2002.12-2003.12.31)
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)
Water Vapor	Open-path (LI-7500, LI-COR, USA), closed-path (LI-6262 or LI-7000, LI-COR, USA)
CO2	Open-path (LI-7500, LI-COR, USA), closed-path (LI-6262 or LI-7000, LI-COR, USA)
Measurement height	10.1m
Sampling frequency	8Hz
Averaging time	30min
Data logger	CR10X (Campbell, USA)
Data storage	PC
Original data (Raw data or statistics)	Raw data

Meteorology

Observation items	Levels / Depth	Instrument
Global solar radiation (incoming)	9.8 (m)	MR-40 (Eiko, Japan)
Global solar radiation (outgoing)	9.8 (m)	MR-40 (Eiko, Japan)
Long-wave radiation (incoming)	9.8 (m)	MR-40 (Eiko, Japan)
Long-wave radiation (outgoing)	9.8 (m)	MR-40 (Eiko, Japan)
Net radiation	-	-
PPFD (incoming)	9.8 (m)	PAR01(Prede, Japan)
PPFD (outgoing)	9.8, 1.0 (m)	PAR01(Prede, Japan)
Direct/diffuse radiation	-	-
Direct/diffuse PPFD	-	-
Air temperature	9.8 (m)	Platinum resistance thermometer (HMP35C, VAISALA, Finland)
Humidity	9.8 (m)	Capacitive hygrometer (HMP35, VAISALA, Finland)
Soil temperature	0.02, 0.1 (m)	Thermistor (107, Campbell, USA)
Soil heat flux	0.01 (m)	MF81 (EKO, Japan)
Soil water content	0.1, 0.2, 0.3, 0.4, 0.5, 0.6 (m)	Tensiometer (DIK3150, Daiki Rika, Japan)
Wind speed	9.8 (m)	3-cups anemometer (Makino, Japan), sonic anemometer thermometer ( DA600, KAIJO, Japan)
Wind direction	10.1 (m)	sonic anemometer thermometer ( DA600, KAIJO, Japan)
Barometric pressure	-	-
Precipitation	9.8 (m)	Tipping bucket rain gauge (RT-5, Ikeda Keiki, japan)
CO2 concentration	10.1 (m)	CO2/H2O analyzer (LI-7000 or LI-6262, or LI-7500 LI-COR, USA)

Other

Soil respiration	Occasionally with manual closed dynamic chamber system
Photosynthesis	Occasionally with LI-6400 (Li-cor)
Ecological Investigation	DBH, Tree height