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FHK:Fuji Hokuroku Flux Observation Site

General site detail (Updated 16 May 2008)
 Site name
 Fuji Hokuroku Flux Observation Site
 AsiaFlux site code
 FHK
 Location Fujiyoshida City, Yamanashi Pref, Japan
 Position 35º 26' 36.7"N, 138º 45' 53.0"E
 Elevation 1050-1150 m above sea level
 Slope 3-4 deg
 Terrain type
 Flat
 Area 150 ha
 Fetch N/A
 Climate Warm temperate - fully humid - warm summer (Cfb)
 Mean annual air temperature
 9.6 degC (2006-2007)
 Mean annual precipitation
 1566 mm (2006-2007)
 Vegetation type
 Japanese larch forest afforestation
 Domestic species (Overstory)
 Japanese larch (Larix Kaempferi Sarg.),
 Fujizakura (Prunus incise)
 Dominant species (Understory)
 Broad leaved plants
 Canopy height
 20-25 m
 Age 45-50 years old
 LAI -
 Soil type
 Coarse-grain volcanic ash

Observations
Eddy Covariance method (CO2)
 System Open- and closed-path systems (CO2 flux, latent heat flux)
 Wind speed 
 Three-dimensional sonic anemometer-thermometer
 (DA600-3TV (Probe TR-62AX), KAIJO)
 Air temperature
 Three-dimensional sonic anemometer-thermometer (DA600-  3TV (Probe TR-62AX), KAIJO), Platinum resistance  thermometer and capacitive hygrometer (HMP45A, Vaisala)
 Water vapor
 Open- and Closed-path CO2/H2O analyzers
 (LI-7500 and LI-6262, LI-COR), 
 CO2 Open-path (LI-7500, LI-COR, USA), 
 Closed-path (LI-6262 or LI-7000, LI-COR, USA)
 Measurement height
 35 m
 Sampling frequency
 10 Hz
 Averaging time
 30 min
 Data logger
 CR3000, Campbell Scientific
 Data storage
 PC
 Original data
 Raw data

Meteorology
 Observation items
  Levels/ Depth
 Instrument 
 Global solar radiation(incoming)
 32 m
 32 m, 2 m (x5)
 32 m, 2 m (x2)
 Pyranometer (MS-402F, Eko,Japan),
 Pyranometer (MS-601, Eko, Japan),
 Radiometer (MR-50, Eko, Japan)
 Global solar 
radiation (outgoing)
 32 m, 2 m (x2) Radiometer (MR-50, Eko, Japan)
 Long-wave radiation(incoming) 
 32 m, 2 m (x2) Radiometer (MR-50, Eko, Japan)
  Long-wave radiation(outgoing) 32 m, 2 m (x2) Radiometer (MR-50, Eko, Japan)
 Net radiation
 32 m, 2 m (x2) Radiometer (MR-50, Eko, Japan)
 PPFD (incoming)
 32 m, 2 m (x2) Quantum sensor (LI-190S, LI-COR,  Jan.2006-Mar.2007), (ML-020P, Eko,  Japan, Mar.2007-)
 PPFD (outgoing)
 32 m, 2 m (x2) Quantum sensor (LI-190S, LI-COR,  Jan.2006-Mar.2007), (ML-020P, Eko,  Japan, Mar.2007-)
 Direct / diffuse radiation
 32 m Shadow band (PRB-100, PREDE, Japan)
 Direct / diffuse PPFD
 - 
 Air temperature
 32,27,16,10,4.5,2,1,0.5  m Platinum resistance thermometer and  capacitive hygrometer (HMP-45D,  Vaisala)
 Humidity 32,27,16,10,4.5,2,1,0.5  m Platinum resistance thermometer and  capacitive hygrometer (HMP-45D,  Vaisala)
 Soil temperature
 0, 0.02, 0.05(x3),0.15,  0.3, 0.6, 1 m Platinum resistance thermometer (C-  PTWP, Climatec, Japan)
 Soil heat flux
 0.02 m (x3)
 Heat flux plate (HF-01, REBS)
 Soil water 
 content 
 0 m (x3), 0.1, 0.2 m  (x2) TDR sensor (CS616, Campbell)
 Wind speed
 32,27,16,10,4.5,2 m Sonic anemometer (MA-130A, Eko,  Japan, Jan.2006-Mar.2007), (PGWS-100-  3, GILL, Apr.2007-)
 Wind direction
 32,27,16,10,4.5,2m Sonic anemometer (MA-130A, Eko,  Japan, Jan.2006-Mar.2007), (PGWS-100-  3, GILL, Apr.2007-)
 Barometric 
 pressure
 1.5 m Barometer (PTB210, Vaisala)
 Precipitation 32 m  Tipping-bucket rainguage with heater  (CYG-52202, R. M. Young)
 COconcentration
 32, 27,22,16,10,4.5,2,1  m CO2/H2O analyzer
 (LI-6262, LI-COR, USA)
 Snow depth 2 m Sonic ranging sensor (SR50, Campbell)
 Spectral radiation  (incoming) 32 m Spectroradiometer (MS-700, Eko, Japan)
 Spectral radiation  (incoming) 32 m Spectroradiometer (MS-700, Eko, Japan)
Other
 Soil respiration
 Continuous (automated chambers)
 Photosynthesis Occasionally 
 CH4 REA (half-hourly) since 2009, 2011-
 soil chamber
 isoprene, monoterpenes  REA (half-hourly) since 2010-
 Ecological investigation
 Tree heights, stand density, diameter,  biomass, LAI
 Phenology Continuous (photos)
 
Observation Period and data Availability
 Measurement Period
 January 2006 to present
 Measurement Frequency
 Continuous
 Data Availability
 2006-2009 in AsiaFlux Database
Contact
 Nobuko Saigusa (n.saigusa [at] nies.go.jp)
 Center for Global Environmental Research (CGER),National Institute for  Environmental Studies (NIES)
 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
 Tel : +81-29-850-2976, 2517 Fax : +81-29-858-2645
 http://db.cger.nies.go.jp/gem/moni-e/warm/flux/fuji.html
 Yoshiyuki Takahashi (yoshiyu [at] nies.go.jp)
 Center for Global Environmental Research (CGER),National Institute for  Environmental Studies (NIES)
 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
 Tel : +81-29-850-2468 Fax : +81-29-858-2645
 [Soil respiration] Naishen Liang (liang [at] nies.go.jp), CGER/NIES
 [Remote sensing] Hiroyuki Oguma (oguma [at] nies.go.jp),
 Reiko Ide CGER/NIES
 Calibration Information
 Open-path analyzers were calibrated approximately every two months  with standard CO2 gases and a dew point generator (LI610, LI-COR).



 Infrastructure
 Tower, Electrical power(AC)


Publication
 http://db.cger.nies.go.jp/gem/moni-e/warm/flux/pub.html