SRK:Shirakami Beech Forest Site

Gengeral site detail (Updated 27 April 2012)
 Site name
 Shirakami Beech Forest Site
 AsiaFlux site code
 SRK
 Location Ajigasawa, Aomori, JAPAN
 Position 40° 33´ 56" N, 140° 7' 40" E
 Elevation 340 m above sea level
 Slope 15 degree
 Terrain type
 West facing slope of a mountain
 Area more than 4 km2
 Fetch more than 1 km
 Climate Cool temperate (Dfa)
 Mean annual air temperature
 8.6 degreeC (from January 2009 to December 2010)
 Mean annual precipitation
 probably around 3,000 mm
 Vegetation type
 Deciduous broadleaved forest
 Domestic species (Overstory)
 Japanese beech (Fagus crenata Blume), 
 Japanese white bark magnolia (Magnolia obovata)
 Dominant species (Understory)
 -
 Canopy height
 about 25m
 Age Around 130 years for some tall beech trees (2012)
 LAI -
 Soil type
 -

Observations
Eddy Covariance method (CO2)
 System Open-path eddy covariance system
 Wind speed
 Three-dimensional sonic anemometer-thermometer
 (81000, Young, USA)
 Air temperature
 Three-dimensional sonic anemometer-thermometer
 (81000, Young, USA)
 Water vapor
 Open-path infrared gas analyzer (LI-7500, LI-COR, USA)
 CO2 Open-path infrared gas analyzer (LI-7500, LI-COR, USA)
 Measurement height
 32.5 m
 Sampling frequency
 10 Hz
 Averaging time
 30 min
 Data logger
 CR1000 (Campbell, USA)
 Data storage
 CF
 Original data
 Raw data

Meteorology
 Observation items
  Levels/ Depth
 Instrument 
 Global solar radiation(incoming)
 32 m 4 component net radiometer 
 (MR-50, EKO, Japan)
 Global solar 
radiation (outgoing)
 32 m  4 component net radiometer 
 (MR-50, EKO, Japan)
 Long-wave radiation(outgoing) 
 32 m   4 component net radiometer 
 (MR-50, EKO, Japan)
 Long-wave radiation(outgoing) 
 32 m  4 component net radiometer 
 (MR-50, EKO, Japan)
 Net radiation
 - 
 PPFD (incoming)
 32 m  Quantum sensor
 (ML-020P, EKO, Japan; June 2009 to present)
 PPFD (outgoing)
 32 m  Quantum sensor
 (ML-020P, EKO, Japan; June 2009 to present)
 Direct / diffuse radiation
 - 
 Direct / diffuse  PPFD
 - 
 Air temperature
 32, 28 20,10 m Platinum resistance thermometer
 (HMP45A for 32, 28 m and HMP155 for 20, 10 m,  Vaisala, Finland)
 Humidity 32, 28 20,10 m Capacitive hygrometer (HMP45A for 32, 28 m and  HMP155 for 20, 10 m, Vaisala, Finland)
 Soil temperature
 1,5,10, 20,40  cm Five temperature data loggers
 (UA-001-64, Onset, USA)
 Soil heat flux
 1 cm
 Four thermopile heat flux sensors
 (MF-81,EKO,Japan)
 Soil water 
 content 
 0-10 cm  Time-domain refrectometers
 (CS-616, Campbell, USA)
 Wind speed
 - 
 Wind direction
 - 
 Barometric 
 pressure
 -
 Precipitation 28 m Tipping-bucket rainguage (CTK-15PC, Climatec,  Japan) (heater not operated)
 COconcentration
 - 
 snow depth 6 m Sonic snow depth meter 
 (SR50A, Campbell, USA)
Other
 Soil respiration
 Measured by closed chamber system  several times a year from 2010 to 2011.
 Photosynthesis -
 Ecological investigation
 Species and GBH within the area of  30,000 m2 around the flux tower, once a  year since 2009.
 
Observation Period and Data Availability
 Measurement Period
 from August 2008
 Measurement Frequency
 Continuous
 Data Availability
 -
Contact
 Sachinobu Ishida (ishida [at] hirosaki-u.ac.jp)
 Graduate School of Science and Technology, Hirosaki University
 3 Bunkyo-cho, Hirosaki, Aomori, 036-8561, Japan
 Phone and Fax: +81-172-39-3621
 Daiyu Ito (daiyu [at] hirosaki-u.ac.jp)
 Teaching and Research Center for Bio-coexistence, Faculty of  Agriculture and Life Science, Hirosaki University
 7-1, Shimobukuro, Fujisaki, Fujisaki, Aomori, 038-3802, JAPAN 
Infrastructure
 Tower 34m (Stairs not equipped)
 Electric Power: Batteries(DC12V) + Solar panels