API: Appi forest meteorology research site

General site detail (Updated 18 May 2009)
 Site name
 Appi forest meteorology research site
 AsiaFlux site code
 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
 Area 43.5ha
 Fetch More than 300m
 Climate Cool temperate
 Mean annual air temperature
 6.1 degreeC
 Mean annual precipitation
 Vegetation type
 Cool temperate deciduous broadleaved forest
 Domestic species (Overstory)
 Japanese beech (Fagus crenata Blume)
 Dominant species (Understory)
 Canopy height
 Age Approx. 70 years
 Soil type
 Brown forest soil

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
 Original data
 Raw data

 Observation items
  Levels/ Depth
 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
 Soil water 
 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)
 5 m Silicon capacitive absolute pressure sensor  (PTB-100,VAISALA,Finland)
 Precipitation 4.5 m Rain gauge(B-071,YOKOGAWA,Japan)
 31,24,20,18,15,12,9,3  m Closed-path CO2/H2O analyzer
 (LI-6262, LI-COR, USA)
 Soil respiration
 Photosynthesis Occasionally
 Ecological investigation
 Tree heights, stand density, diameter
Observation Period and Data Availability
 Measurement Period
 April 2000 to present
 Measurement Frequency
 Data Availability
 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
 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