Atmosphere Sub-Center of Chinese Ecosystem Research Network
(SCAS-CERN)
Website: http://www.cern.ac.cn
Main Research Fields
Mechanism and prediction of the urban and regional
air pollution and their effects
on the atmospheric environment;
Evaluation of the trace gases and aerosol cncentration,
the mass exchange between the biosphere and atmosphere
and their effects on the environment and climate
Main Achievements
Study on Carbon Budget in Terrestrial and Marginal
Sea Ecosystems of China: Aspects and Progress
Titled as Study on Carbon Budget in Terrestrial and
Marginal Sea Ecosystems of China, CBTSEC, a flagship
project of the Knowledge Innovation Program has been
launched by the Chinese Academy of Sciences (CAS) with
70 million RMB (equivalent to some US $8.5 million)
financial supports. Some 150 scientists and more than
250 graduate students and post doctors from 18 CAS institutes
with different academic disciplines are involved in
the project. Over the period from 2001 to 2005, the
scientists will work on the themes as the geographical
and temporal patterns of carbon sources and sinks, the
control mechanisms of driving the processes of carbon
cycling in the terrestrial and marginal sea ecosystems¡ªboth
anthropogenic and non-anthropogenic, the likely dynamics
of the carbon budget into the future, options that can
enhance the carbon storage and/or reduce the carbon
emissions from these ecosystems. The figure shows the
framework of the CBTSEC.
Past, present and future patterns of biological C sources/sinks
Options for mitigating C emissions and/or enhancing
C storage
The Atmosphere Background Observation Network/CAS
The Atmosphere Background Observation Network consists
of five stations, Fukang desert station, Changbai Mountain
station, Xinglong station, Gongga Mountain station,
and Dinghu Mountain station. The objective of the Atmosphere
Background Observation Network is to collect basic scientific
data for relative scientific research and progress,
for national projects and international environment
diplomacy.
Chinese Terrestrial Ecosystem Meteorology and
Radiation Observation Network
Thirty-eight sets of Vaisala M520 radiation apparatus
constitute the most advanced ecological, meteorology
and environment automatic monitoring network in typical
ecosystem areas in China. It provides a lot of high
quality data for global climate change, atmospheric
Chemistry and ecology researches. The characteristic
hazemeter observation network can provide calibration
for satellite remote sensing.
Objectives and meanings
- Interactions between global change and ecosystems
- The radiation distribution characteristics of Chinese
terrestrial ecosystem
- Interactions between radiation variation and global
climate change and changes in
environment, such as the increasing of greenhouse
gasses
- Calibration for the result of satellite remote sensing
Distribution of Chinese terrestrial ecosystem observation
network stations
- The area can represent Chinese typical ecosystem
- The area had not been infected by human activities
The figure is the Distribution map of Ecosystem research
stations of CERN.
Apparatus
Weather elements: wind direction (WAV151), wind speed
(WAA151), air temperature (HMP45D), humidity (HMP45D),
pressure (DPA501), rain gauge (RG13), soil temperature
(QLI150) (0cm, 5cm, 10cm, 15cm, 20cm, 40cm, 60cm, 100cm)
Radiation observation elements: global radiation, UV radiation,
photosynthetic radiation, net radiation, and soil heat
flux. 
The status of atmosphere background observation laboratory
at stations
The Sun Hazemeter Network of CERN/CAS
The Sun Hazemeter Network is the first standard network
to measure and study of aerosol optical properties,
including aerosol concentration, particle size distribution,
and their spatial and temporal variation in China. Simultaneously,
these data can be used to revise the results of the
satellite remote sensing. The large-scale sun hazemeter
ground-based network directly provides some basic data
to try to reveal the current uncertainty of the aerosol
radiation in the quantitative assessment of the climate
and environment change.
The network covers almost all of Chinese area, including
18 CERN stations, 4 typical city sites, a data center
(Beijing) and a calibration center (Xianghe). Department
of Meteorology of University of Maryland in U.S. supplies
the instruments and MODIS data. The instrument, FS Handheld
Sun Hazemeter (LEDs) has four wavelength channels, 880nm,
650nm, 500nm, and 405nm. The hazemeters were calibrated
by Langley plot method and transfer calibration and
were uniformly checked. The operation of the network
is in line with ¡°General by-law¡±, Best performance assessment¡±,
and ¡°Data sharing policy¡±.
Director: Prof. Wang Yuesi
Deputy Director: Prof. Huang Yao
Tel: +86-10-82028726
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