Site name	Yamashiro forest meteorology research site
AsiaFlux site code	YMS
Location	Yamashiro, Souraku, Kyoto, Japan
Position	135º 50' 46.2" E, 34º 47' 41.2" N   (World Geodetic System 1984)
Elevation	225 m above sea level  (World Geodetic System 1984)
Slope	10 degree
Terrain type	Forest on complex terrain
Area	More than 10km2
Fetch	More than 5km to north and east direction, 2km to  west and 3km to south directions
Climate	warm temperate, Cfa
Mean annual air temperature	15.5 deg
Mean annual precipitation	1449 mm
Vegetation type	deciduous broadleaved secondary forest
Domestic species (Overstory)	Quercus serrata, Ilex pedunculosa
Dominant species (Understory)	Rhododendron reticulatum, Rhododendron  macrosepalum
Canopy height	6-20 m
Age	50-60 years
LAI	1.2 (winter) - 4.8(summer)
Soil type	immature forest soil with sandy weathered granite

Observations
Eddy Covariance method (CO₂)

System	Open- (CO2 flux, latent heat flux) and   Closed-path system (CO2 flux)
Wind speed	Three-dimensional sonic anemometer-thermometer  (DA600, KAIJO, Japan)
Air temperature	Three-dimensional sonic anemometer-thermometer  (DA600, KAIJO, Japan )
Water vapor	Band pass covariance(HMP-45,Visala)   Open-path(Li-7500 LI-COR, USA)
CO2	Closed-path (LI-6262 or LI-7000, LI-COR, USA)
Measurement height	36.1 m
Sampling frequency	10 Hz
Averaging time	30 min
Data logger	DRM3a, TEAC, Japan
Data storage	MO
Original data	Raw data

Meteorology

Observation items	Levels/ Depth	Instrument
Global solar radiation(incoming)	26.4 m	Pyranometer (CM6F, Kipp & Zonen, Netherland)
Global solar  radiation (outgoing)	26.4 m	Pyranometer (CM6B, Kipp & Zonen, Netherland)
Long-wave radiation(incoming)	26.4 m	Pyrgeometer (MS-202F,EKO,Japan)
Long-wave radiation(outgoing)	26.4 m	Pyrgeometer (MS-202,EKO,Japan)
Net radiation	26.4 m	Net radiometer (CN-11, EKO, Japan)
PPFD (incoming)	26.4 m	PAR sensor(LI-190SA,LI-COR,USA)
PPFD (outgoing)	-
Direct / diffuse  radiation	-
Direct / diffuse  PPFD	-
Air temperature	6 heights	Temperature Probe(HMP-45A,Visala,Finland)
Humidity	6 heights	Humidity Probe(HMP-45A,Visala,Finland)
Soil temperature	about 40 points	thermocouple
Soil heat flux	4 points	Soil heat flux meter(MF-81,EKO,JAPAN)
Soil water   content	12 points	TTDR(HYDRA, Stivens vitel, USA)
Wind speed	6 heights	3-cups anemometer (AG750, Makino, Japan)
Wind direction	26.4 m	Vane ( W200P, Vector instruments, UK)
Barometric   pressure	-
Precipitation	10m,1.5m	Rain gauge (RT-5,IKEDA instruments, JAPAN))
CO2 concentration	8 heights	Closed-path CO2/H2O analyzer  (LI-6262, LI-COR, USA)

Other

Soil respiration	Continuous
Photosynthesis	2006 summer - (LI-6400,LI-COR, USA)
Ecological investigation	Tree heights, stand density, diameter