Japan Geoscience Union Meeting 2016

Presentation information

International Session (Oral)

Symbol A (Atmospheric and Hydrospheric Sciences) » A-AS Atmospheric Sciences, Meteorology & Atmospheric Environment

[A-AS01] Global Carbon Cycle Observation and Analysis

Tue. May 24, 2016 3:30 PM - 5:00 PM A03 (APA HOTEL&RESORT TOKYO BAY MAKUHARI)

Convener:*Nobuko Saigusa(National Institute for Environmental Studies), Prabir Patra(Research Institute for Global Change, JAMSTEC), Toshinobu Machida(National Institute for Environmental Studies), Satoru Chatani(National Institute for Environmental Studies), Chair:Nobuko Saigusa(National Institute for Environmental Studies)

4:45 PM - 5:00 PM

[AAS01-12] Network connection of tower flux measurement data
:Toward long term stable flux measurement

*Yuji Kominami1, Katsumi Yamanoi1, Kenzo Kitamura1, Takafumi Miyama1, Yasuko Mizoguchi1, Satoru Takanashi1, Yukio Yasuda1, Nobuko Saigusa2, Yoshiyuki Takahashi2, Wonsik Kim4, Akira Miyata4, Keisuke Ono4, Shigeyuki Ishidoya3, Hiroaki Kondo3, Takahisa Maeda3, Shohei Murayama3, Samreong Panuthai5, Taksin Archawakom6 (1.Foresry ansd Forest Products Research Institute, 2.National Institute for Environmental Studies, 3.National Institute of Advanced Industrial Science and Technology, 4.National Institute for Agro-Environmental Science, 5.Department of National Park, Wildlife, and Plant Conservation of Thailand, 6.Thailand Institute of Scientific and Technological Research)

Keywords:CO2 flux, Land ecosystem, Flux tower

Since last half of 1990's, many flux towers have been constructed mainly for monitoring CO2 flux using eddy covariance method at various land ecosystems in the world. And much effort have been made to keep data quality. Comparing with standard environmental factors (e.g. sun radiation, wind speed), eddy covariance measurement requires sensitive equipment (infrared CO2 gas analyzer and supersonic anemometer), frequent maintenance and severe data quality are necessary. On the other hand, to evaluate the effect of land ecosystem to global climate change, long term and quality certified data are demanded. We, 4 national research institutes, constructed and have maintained 11 CO2 flux measurement towers in Japan and East Asia (Fig.1, 8 in Japan and 3 in East Asia countries). To reduce effort of maintenance and increase data quality, we have conducted following contrivances supported by Environmental Agency Fund.
1. For quick check of flux measurement devices and data quality, we constructed the system to integrate whole flux site data in a data saver at Tsukuba using network.
2. To reduce effort of data analysis, we set up standardized flux data format and developed an automated flux data analyze system.
3. To check each site data quality, we developed a mobile closed pass CO2 flux measurement system
4. For quick learning of flux measurement technique, we published a flux measurement manual