NKM: Nishikoma Site

General site detail (Updated 3 December 2020)
 Site name
 Nishikoma Site
 AsiaFlux site code
 Location Ina, Nagano, Japan
 Position 35° 48' 28.95" N, 137° 50' 1.99" E
 Elevation 2644 m above sea level
 Slope 30 degree
 Terrain Type
 Area -
 Fetch 100 m for the dominant wind direction
 Climate Dfb: Humid continental
 Mean annual air temperature
 0.6 degreeC
 Mean annual precipitation
 Vegetation Type
 Alpine dwarf pine
 Domestic species (Overstory)
 Alpine dwarf pine
 Dominant species (Understory)
 Canopy height
 About 0.3 m
 Age N/A
 Soil type

Eddy Covariance method (CO2)
 System Open-path system (sensible heat, latent heat, CO2 flux)
 Wind speed
 Three-dimensional sonic anemothermometer
 (CSAT3, Campbell)
 Air temperature
 Three-dimensional sonic anemothermometer
 (CSAT3, Campbell)
 Water vapor
 Open-path CO2/H2O analyzer (EC150, Campbell)
 CO2 Open-path CO2/H2O analyzer (EC150, Campbell)
 Measurement height
 Approx. 2.3 m
 Sampling frequency
 10 Hz
 Averaging time
 30 min.
 Data logger
 CR1000 (Campbell)
 Data storage
 CF card
 Original data

 Observation items
 Levels / Depth
 Global solar radiation (incoming)
 2 m
 CNR4 (Kipp & Zonen)
 Global solar radiation (outgoing)
 2 m
 CNR4 (Kipp & Zonen)
 Long-wave radiation (incoming)
 2 m
 CNR4 (Kipp & Zonen)
 Long-wave radiation (outgoing)
 2 m
 CNR4 (Kipp & Zonen)
 Net radiation
 PPFD (incoming)
 PPFD (outgoing)
 Direct/diffuse radiation
 Direct/diffuse  PPFD
 Air temperature
 2.5 m
 HMP60 (Vaisala)
 Humidity 2.5 m
 HMP60 (Vaisala)
 Soil temperature
 0.05, 0.1 m
 107 (Campbell)
 Soil heat flux
 0.01 m
 HFT-1.1 (REBS)
 Soil water content
 0.05 m
 CS616 (Campbell)
 Wind speed
 2.5 m
 PGWS-100 (Gill)
 Wind direction
 2.5 m
 PGWS-100 (Gill)
 Barometric pressure
 1 m
 CS106 (Campbell)
 Precipitation -
 CO2 concentration

Observation Period and Data Availability
 Measurement period
 September 2018 to present
 Measurement Frequency
 (flux observation: summer time)
 Data Availability

 Hiroki Iwata (hiwata[at]shinshu-u.ac.jp)
 Department of Environmental Science, Faculty of Science,
 Shinshu University
 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan
 Tel: +81-263-37-2502

 Mast, Solar panels