Platinum resistance thermometers and capacitive hygrometers (HMP45A, Vaisala, Finland)
Humidity
28, 21, 13.6, 8.5, 3 m
Platinum resistance thermometers and capacitive hygrometers (HMP45A, Vaisala, Finland)
Soil temperature
-0.02, -0.05, -0.2, -0.4, -0.6, -0.8, -1.2 m
Platinum resistance thermometer
Soil heat flux
-
Soil water content
-0.1, -0.2, -0.4, -0.6 m
TDR sensor (CS615, Campbell)
Wind speed
28, 24, 21, 17, 13.6, 8.5, 3 m
Sonic anemometer (MA-130, Eko, Japan, Windsonic, Gill, UK)
Wind direction
28, 24, 21, 17, 13.6, 8.5, 3 m
Sonic anemometer (MA-130, Eko, Japan, Windsonic, Gill, UK)
Barometric pressure
3 m
Barometer (PTB100, Vaisala, Finland)
Precipitation
15 m
Tipping-bucket rainguage (Davis, USA)
CO2 concentration
28, 21, 13.6, 8.3, 3 m
CO2/H2O analyzer (LI-7000 LI-COR, USA)
Rain drop size distribution
15 m
Laser Precipitation monitor (Thies, FRG)
Other
Soil respiration
Occasionally
Photosynthesis
Occasionally
Ecological investigation
Tree heights, stand density, diameter, LAI (estimated from litter fall)
O3 and SO2 profile
2004 - 2005
Stable isotope of C in air layer, Organic carbon contents of soil and soil water
Occasionally
Observation Period and data Availability
Measurement Period
from 2002 to October 2011
Measurement Frequency
Continuous
Data Availability
N/A
Contact
Ko Nakaya (cow [at] criepi.denken.or.jp) Environmental Science Research LaboratoryCentral Research Institute of Electric Power Industry 1646 Abiko, Abiko, Chiba 270-1194, Japan Tel:+81-4-7182-1181 Fax:+81-4-7183-5061
Infrastructure
Tower, Electrical power (100V AC 60Hz)
Research Fund
Personal research fund of Central Research Institute of Electric Power Industry
Calibration Information
The gain of CO2 of the closed-path analyzers were checked once a hour by standard CO2 gas of 400 ppmv and N2 gas that were automatically controlled. Open-path analyzers were calibrated approximately once a year with standard CO2 gases and a dew point generator (LI610, LI-COR).
Other Information
PI changed the site name (Kitasaku > Karuizawa) and site code (KTS > KZW) on 14th June, 2007.
Publication
Nakaya K., Toyoda Y. (2009) Effect of leaf area changes on aerodynamic roughness over the forest canopy., CRIEPI report, V08033. [in Japanese]
Nakaya, K. (2008) Study of improvement on elvaluation method of energy and mass exchange between atmosphere and forest ecosystem. Memoirs of the Research Faculty of Agriculture Hokkaido University 29(2). 149-213. [in Japanese]
Nakaya K., Suzuki C., Kobayashi T., Ikeda H., Yasuike S. (2007) Spatial averaging effect on local flux measurement using a displaced-beam small aperture scintillometer above the forest canopy., Agric. For. Meteorol., 145(1-2): 97-109.
Nakaya, Ko, Suzuki, C., Kobayashi, T., Ikeda, H., Yasuike, S. (2006) Application of a displaced-beam small aperture scintillometer to a deciduous forest under unstable atmospheric conditions, Agric. For. Meteor., 136: 45-55.
Ikeda, H., Kobayashi, T., NAKAYA, K., Suzuki, C., Yasuike, S.(2003) Migration and Fixation of Organic Carbon in Vegetation - Forest soil System.,Goldschmidt Conference (Kurashiki, Japan). Geochimica et Cosmochimica Acta 67(18) A167
Ikeda, H., T. Kobayashi ,K. Nakaya, M. Nashimoto, C. Suzuki , S. Yasuike (2002) Migration and Storage of Carbon in Vegetation - Forest Soil System in Japanese Mountainous Area. Proceeding of BIOGEOMON 2002, 103
