API: Appi forest meteorology research site

General site detail (Updated 18 May 2009)
 Site name
 Appi forest meteorology research site
 AsiaFlux site code
 API
 Location Hachimantai, Iwate, Japan
 Position 40º 00' 06" N, 140º 56' 15" E
 (World Geodetic System 1984)
 Elevation 825m above sea level
 (World Geodetic System 1984)
 Slope 5.7 degree
 Terrain type
 N/A
 Area 43.5ha
 Fetch More than 300m
 Climate Cool temperate
 Mean annual air temperature
 6.1 degreeC
 Mean annual precipitation
 N/A
 Vegetation type
 Cool temperate deciduous broadleaved forest
 Domestic species (Overstory)
 Japanese beech (Fagus crenata Blume)
 Dominant species (Understory)
 N/A
 Canopy height
 17-19m
 Age Approx. 70 years
 LAI N/A
 Soil type
 Brown forest soil

Observations
Eddy Covariance method (CO2)
 System Closed-path system ( CO2 flux)
 Wind speed
 Three-dimensional sonic anemometer-thermometer (DA600-  3T Probe TR-61C, KAIJO, Japan)
 Air temperature
 Three-dimensional sonic anemometer-thermometer (DA600-  3T Probe TR-61C, KAIJO, Japan), Platinum resistance  thermometer (HMP45A, VAISALA, Finland)
 Water vapor
 Capacitive hygrometer (HMP45A, VAISALA, Finland)
 CO2 Closed-path (LI-6262, LI-COR, USA)
 Measurement height
 31 m
 Sampling frequency
 10 Hz
 Averaging time
 30 min
 Data logger
 DRM3b, TEAC, Japan
 Data storage
 MO
 Original data
 Raw data

Meteorology
 Observation items
  Levels/ Depth
 Instrument 
 Global solar radiation(incoming)
 31 m Pyranometer
 (CM6F, Kipp & Zonen, Netherland)
 Global solar 
radiation (outgoing)
 31 m Pyranometer 
 (CM6B, Kipp & Zonen, Netherland)
 Long-wave radiation(outgoing) 
 31 m Infrared radiometer with fan
 (PIR, Eppley, USA)
 Long-wave radiation(outgoing) 
 31 m Infrared radiometer 
 (PIR, Eppley, USA)
 Net radiation
 - 
 PPFD (incoming)
 31, 18, 15, 12, 9, 6, 3  m Quantum sensor (LI-190B, LI-COR, USA)
 PPFD (outgoing)
 31,3 m Quantum sensor (LI-190B, LI-COR, USA)
 Direct / diffuse radiation
 - 
 Direct / diffuse PPFD
 - 
 Air temperature
 31, 24, 20, 18, 15, 12,  9, 6, 3 m Platinum resistance thermometer  (HMP45D, VAISALA, Finland)
 Humidity 31, 24, 20, 18, 15, 12,  9, 6, 3 m 
 Capacitive hygrometer
 (HMP45D, VAISALA, Finland)
 Soil temperature
 0.02, 0.05, 0.1, 0.2,  0.4, 0.8 m 
 Platinum resistance thermometer
 Soil heat flux
 0.02 m 
 Thermopile heat flux sensor
 (MF-81,EKO,Japan)
 Soil water 
 content 
 0.05,0.15,0.30,0.50,  0.80,0.95 m TDR sensor(CS615,Campbell,USA)
 Wind speed
 31, 24, 20, 18, 15,12,  9, 6, 3 m 
 3-cups anemometer
 (WM-30P, Ikeda, Japan)
 Wind direction
 31 m Vane (A-802, YOKOGAWA, Japan)
 Barometric 
 pressure
 5 m Silicon capacitive absolute pressure sensor  (PTB-100,VAISALA,Finland)
 Precipitation 4.5 m Rain gauge(B-071,YOKOGAWA,Japan)
 COconcentration
 31,24,20,18,15,12,9,3  m Closed-path CO2/H2O analyzer
 (LI-6262, LI-COR, USA)
Other
 Soil respiration
 Continuous
 Photosynthesis Occasionally
 Ecological investigation
 Tree heights, stand density, diameter
 
Observation Period and Data Availability
 Measurement Period
 April 2000 to present
 Measurement Frequency
 Continuous
 Data Availability
 N/A
Contact
 Yukio Yasuda (yassan [at] ffpri.affrc.go.jp)
 Takeshi Saito (saitota [at] ffpri.affrc.go.jp)
 Tohoku research center
 Forestry and Forest Products Research Institute
 92-25 Nabeyashiki, Shimokuriyagawa, Morioka, lwate 020-0123, Japan
 Tel: +81-19-641-2150 Fax: +81-19-641-6747
Infrastructure
 Tower, Electrical power (100V AC 50Hz), telephone 
Research Fund
 Research grant #199903 (1999-2002) of the Forestry and Forest  Products Research Institute 
 Research grant #200303 (2003-2005) of the Forestry and Forest  Products Research Institute
 Research Fund (Evaluation, Adaptation and Mitigation of Global  Warming in Agriculture, Forestry and Fisheries:Research and  Development) by Ministry of Agriculture, 
 Forestry and Fisheries of Japan