Three dimensional sonic anemometer (CSAT3, Campbell scientific)
Air temperature
Three dimensional sonic anemometer (CSAT3, Campbell scientific)
Water vapor
Open-path analyzer (LI-7500, LI-COR, USA)
CO2
Open-path analyzer (LI-7500, LI-COR, USA)
Measurement height
3.5 m
Sampling frequency
10 Hz
Averaging time
30 min
Data logger
CR5000 (Campbell, USA)
Data storage
CF
Original data
Raw data
Meteorology
Observation items
Levels/ Depth
Instrument
Global solar radiation(incoming)
4 m
CNR1 (Kipp & Zonen, The Netherlands)
Global solar radiation (outgoing)
4 m
CNR1 (Kipp & Zonen, The Netherlands)
Long-wave radiation(incoming)
4 m
CNR1 (Kipp & Zonen, The Netherlands)
Long-wave radiation(outgoing)
4 m
CNR1 (Kipp & Zonen, The Netherlands)
Net radiation
4 m
CNR1 (Kipp & Zonen, The Netherlands)
PPFD (incoming)
4 m
Li190SB,Li-Cor Inc., Lincoln, NE, USA
PPFD (outgoing)
-
Direct / diffuse radiation
-
Direct / diffuse PPFD
-
Air temperature
1, 2, 4 m
HMP45C, VAISALA, Finland
Humidity
1, 2, 4 m
HMP45C, VAISALA, Finland
Soil temperature
5, 10, 20 cm
Model 107, Campbell Scientific Inc., Logan, UT, USA
Soil heat flux
2 cm
HFT-3, Campbell Scientific Inc., Logan, UT, USA
Soil water content
0 -10 cm
CS616, Campbell Scientific Inc., Logan, UT, USA
Wind speed
3.5 m
CSAT-3, Campbell Scientific Inc., Logan, UT, USA
Wind direction
3.5 m
CSAT-3, Campbell Scientific Inc., Logan, UT, USA
Barometric pressure
-
Precipitation
4 m
TE525, Texas Electronics, Texas, USA
CO2 concentration
3.5 m
TE525, Texas Electronics, Texas, USA
Other
Soil respiration
Li 6400 (LI-COR, USA)
Photosynthesis
Li 6400 (LI-COR, USA)
Ecological investigation
Li 3000 (LI-COR, USA)
Observation Period and data Availability
Measurement Period
From May 2005 to present
Measurement Frequency
Continuous
Data Availability
N/A
Contact
Shiping Chen (spche [at] nibcas.ac.cn) Institute of Botany, the Chinese Academy of Sciences20 Nanxincun, Xiangshan, Haidian District, Beijing 100093, P. R. ChinaTel: +86-10- 62836279; Fax: +86-10-62599059
[Soil respiration and vegetation survey] Ping Zhang (zp [at] ibcas.ac.cn) Institute of Botany, the Chinese Academy of Sciences 20 Nanxincun, Xiangshan, Haidian District, Beijing 100093, P. R. China
Calibration Information
Open-path analyzers were calibrated twice per year with standard CO2 gases and a dew point generator (LI610, LI-COR).
Publication
Zhang WL., Chen SP, Chen J, Wei L, Han XG, Lin GH. 2007. Biophysical regulations of carbon fluxes of a steppe and a cultivated cropland in semiarid Inner Mongolia. Agric. For. Meteorol.
Infrastructure
Tower, Electrical power (AC), Accommodation
Research Fund
The equipments of tower were funded by Institute of Botany, CAS; The maintenance of tower was partly supported by "100 Talents" project of CAS to Dr. Guanghui Lin and National Aeronautics and Space Administration (NASA) Grant (NEWS 2004 NRA: NN-H-04-Z-YS-005-N) of the Land-Cover / Land-Use Program
