SKT:Southern Khentei Taiga

General site detail (updated 4 April 2007)
 Site name
 Southern Khentei Taiga
 AsiaFlux site code
 Location 25km NE of Mongonomorit, Mongolia
 Position 48º 21' 6.7" N, 108º 39'15.6" E 
 (World Geodetic System 1984)
 Elevation 1630 m above sea level 
 (World Geodetic System 1984)
 Slope 5 degree to the west
 Terrain type
 flat top of a hill
 Area -
 Fetch 750-800 m
 Climate cold and semi-arid (snow - winter dry - cool summer  [Dwc] (Kottek et al. 2006))
 Mean annual air temperature
 -2.9 ºC 
 Mean annual precipitation
 282 mm ( at Mongenmoryt station)
 Vegetation type
 larch forest
 Domestic species (Overstory)
 Larix sibirica, Batula platyphylla
 Dominant species (Understory)
 Carex Spp., Koeleria spp., Chamaenerion  angustifolium
 Canopy height
 20 m
 Age 70-150 years
 LAI Max. 2.2-2.7
 Soil type
 spodosol (seasonal cryosol)

Eddy Covariance method (CO2)
 System Open-path system  (CO2 flux, latent heat flux)
 Wind speed 
 Kaijo SAT-540
 Air temperature
 Kaijo SAT-540
 Water vapor
 Open path(LI-7500, Li-Cor, USA)
 CO2 Open path(LI-7500, Li-Cor, USA)
 Measurement height
 30 m above the ground
 Sampling frequency
 10 Hz
 Averaging time
 30 min
 Data logger
 CR-23x  (Campbell, USA)
 Data storage
 CR-23x  (Campbell, USA)
 Original data
 statistics only

 Observation items
  Levels/ Depth
 Global solar radiation(incoming)
 29 m Four-component net radiometer,CNR1
 ( Kipp & Zonen )
 Global solar 
radiation (outgoing)
 29 m Four-component net radiometer,CNR1
 ( Kipp & Zonen )
 Long-wave radiation(incoming) 
 29 m Four-component net radiometer,CNR1
 ( Kipp & Zonen )
  Long-wave radiation(outgoing) 29 m Four-component net radiometer,CNR1
 ( Kipp & Zonen )
 Net radiation
 PPFD (incoming)
 PPFD (outgoing)
 Direct / diffuse radiation
 Direct / diffuse PPFD
 Air temperature
 30 m HMP-45D, Vaisala Inc
 Humidity 30 m HMP-45D, Vaisala Inc
 Soil temperature
 -0.05, -0.1, -0.2, -0.3, -0.5, -0.7, -1 m C-PT, CLIMATEC Inc
 Soil heat flux
 -0.05, -0.1m PHF-1.1, REBS, Inc
 Soil water 
 -0.1, -0.2, -0.3, -0.7, -1 m CS616, Campbell Scientific
 Wind speed
 Wind direction
 - Campbell PTB210
 Precipitation - CYG-52202, RM Young Company
 H2O concentration - 
 Soil respiration
 Photosynthesis -
 Ecological investigation
Observation Period and Data Availability
 Measurement Period
 from March 2003 to present
 Measurement Frequency
 Data Availability
 2003-2006 in AsiaFlux Database
 Jun Asanuma (asanuma [at]
 Terrestrial Environment Research CenterUniversity of Tsukuba Tsukuba,  Ibaraki 305-8577, Japan
 Tel:+81-298-53-6704 Fax:+ 81-298-53-6704
 Sheng-Gong Li (lisg [at]
 Synthesis Research Center of Chinese Ecosystem Research Network  (CERN)Institute of Geographic Sciences and Natural Resources  Research (IGSNRR),Chinese Academy of Sciences (CAS),
 DaTun Road A11, Anwai Street , ChaoYang DistrictBeijing, China PR,  100101
 Tel: +86-10-64889039 
 Gombo Davaa (watersecta [at]
 Institute of Meteorology and HydrologyHudaldannyi St.-5,
 Ulaanbaatar 46, Mongolia
 Calibration Information
 Calibration once a year.
 Research Fund
 The rangelands atmosphere-hydrosphere-biosphere interaction study  experiment in north-eastern Asia (RAISE) project through financial  support from Japan Science and Technology Agency (2003-2006)
 Sugita, M., Asanuma, J., Tsujimura, M., Mariko, S., Lu, M., Kimura,  F.,Azzaya, D., and Adyasuren, T., 2007: An overview of the rangelands  atmosphere-hydrosphere-biosphere interaction study experiment in  northeastern asia (RAISE). Journal of Hydrology, Vol. 333, pp. 3-20.

 S.-G. Li, J.Asanuma, A.Kotani, W.Eugster, G.Davaa, D.Oyunbaatar,  M.Sugita(2005):Year-round measurements of net ecosystem CO2 flux  over a montane larch forest in Mongolia,Journal of Geographic  Research-Atmosphere,110, D09303, doi:10.1029/2004JD005453