KBY: Kobayashi

Gengeral site detail (Updated 30 April 2010)
 Site name
 AsiaFlux site code
 Location Kobayashi, Miyazaki, Japan
 Position 31º 58' N, 130º 56' E
 Elevation 298 to 301 m above sea level
 Slope 1.0 degree
 Terrain type
 Area [Manure] 6ha, [Fertilizer] 6.5ha
 Fetch 80 to 240 m
 Climate Warm temperate (Humid subtropical climates [Cfa])
 Mean annual air temperature
 16.2  degree C
 Mean annual precipitation
 2800 mm
 Vegetation type
 Hay meadow (Chemical and Manure plots)
 Domestic species (Overstory)
 Southern crabgrass (Digitaria adscendens (H.B.K) Henr.), Japanese millet (Echinochloa utilis Ohwi et Yabuno), Itarian ryegrass (Lolium multiflorum Lam.), Orchardgrass (Dactylis glomerata L.), Tall fescue (Festuca arundinacea Schreb.), Bahiagrass (Paspalum notatum Flugge)
 Dominant species (Understory)
 Canopy height
 Maximum 1.5 m
 Age 10 years in 2010
 Soil type
 Volcanogenous andosol

Eddy Covariance method (CO2)
 System open-path system
 Wind speed
 Sonic anemometer-thermometer (CSAT3, Campbell)
 Air temperature
 Sonic anemometer-thermometer (CSAT3, Campbell)
 Water vapor
 Measurement height
 2.51 m at mature plot, 2.42 m at fertilizer plot
 Sampling frequency
 10 Hz
 Averaging time
 30 min
 Data logger
 CR23X-4M (Campbell, USA)
 Data storage
 Original data
 Raw data

 Observation items
  Levels/ Depth
 Global solar radiation(incoming)
 Global solar 
radiation (outgoing)
 Long-wave radiation(outgoing) 
 Long-wave radiation(outgoing) 
 Net radiation
 PPFD (incoming)
 2 m Quantum sensor
 (LI-190SA, LI-COR, USA)
 PPFD (outgoing)
 2 m Quantum sensor 
 (LI-190SA, LI-COR, USA)
 Direct / diffuse radiation
 Direct / diffuse PPFD
 Air temperature
 2.5 m Ventilated Pt resistance thermometer (HMP-45A, VAISALA) at mature field
 Humidity 2.5 m 
 Capacitive hygrometer 
 Soil temperature
 -0.05, -0.1, -0.3 m T-type thermocouple (T-soil4, MeiwaShoji)
 Soil heat flux
 Soil water 
 -0.05, -0.1, -0.3 m (EC20, DECAGON)
 Wind speed
 2.5 m 
 Sonic anemometer-thermometer
 (CSAT3, Campbell)
 Wind direction
 2.5 m  Sonic anemometer-thermometer
 (CSAT3, Campbell)
 Precipitation - 
 Soil respiration
 Static closed chamber
 Photosynthesis -
 Ecological investigation
 Methane (CH4) Static closed chamber (biweekly)
 Nitrous oxide (NO2) Static closed chamber (biweekly)
Observation Period and Data Availability
 Measurement Period
 from August 2004 to March 2009
 Measurement Frequency
 Data Availability
 Osamu KAWAMURA (kawamura [at] cc.miyazaki-u.ac.jp)
 Mitsuhiro NIIMI (mitsu-n [at] cc.miyazaki-u.ac.jp)
 University of MiyazakiGakuen-kibanadai-nishi-1-1, Miyazaki,
 889-2192, Japan
 TEL&FAX : +81-985-58-7259
 Takahiro TERADO (t0terado [at] nlbc.go.jp)
 Hosono-5157-29, Kobayashi, Miyazaki, 886-0004, Japan
 TEL : +81-984-23-3500 FAX : +81-984-23-0953
 Yasuyuki ISHII (yishii [at] cc.miyazaki-u.ac.jp)
 Tower (2.5m), Electrical power (100V AC) 
 Research Fund
 Research grants from Racing and Livestock Association organized by  Japan Grassland Agriculture & Forage Seed Association
Calibration Information
 Open-path analyzers were calibrated once in a year with standard CO2  gases and a dew point generator (LI610, LI-COR).