Level: Beginner
【Presenter】
Atsushi Sakai, Group Leader / Senior Researcher, Health Impact Group, Energy and Environment Research Department, Japan Automobile Research Institute
[Co-presenter]
Masamitsu Hayasaki, Senior Researcher, Environmental Evaluation Group, Energy and Environment Research Department, Japan Automobile Research Institute
Akika Ito, Group Leader / Senior Researcher, Energy and Environment Research Department Environmental Evaluation Group, Japan Automobile Research Institute
[Announcement summary]
Our main research themes are automobile traffic and atmospheric environment, as well as atmospheric environment and human health effects, and automobile traffic volume is one of the important information. Cross-section traffic volume, which is one of the indicators of automobile traffic volume, is information on traffic volume by vehicle detectors, etc., and data every 5 minutes at each point is released. Currently, information on cross-sectional traffic volume at about 2,400 locations in Tokyo is open to the public. The cross-sectional traffic volume is important as an index for grasping the automobile traffic volume in a relatively wide range in terms of area.
It is probable that the state of emergency due to the spread of the new coronavirus (COVID-19) changed the socio-economic activities significantly and affected the automobile traffic. This time, we analyzed changes in automobile traffic volume in Tokyo before and after the period of emergency declaration, using cross-sectional traffic volume as an index. We also examined changes in air quality during the same period. Jmp was used as the main tool for analysis. By using the data table editing functions such as jmp's table join and concatenation functions, and the graph function linked to the data, the analysis could be performed efficiently. In this report, we will introduce an example of our use of jmp.
[Presenter Profile]
Sakai Atsushi
Completed doctoral course at Ehime University Graduate School of Agriculture (Doctor of Agriculture)
After working as a Research Fellow of the Japan Society for the Promotion of Science (PD), Hamamatsu Medical University (Assistant Professor), Yokohama City University School of Medicine (Assistant Professor), and Shinshu University School of Medicine (Specially Appointed Assistant Professor), he has been a member of the Japan Automobile Research Institute since September 2012. (Senior Researcher), incumbent from April 2020. His current main research theme is air pollution epidemiology for Traffic Related Air Pollution (TRAP).
Masamitsu Hayasaki
Graduated from the University of Tsukuba Graduate School of Earth Sciences with credits (2000). Obtained a doctorate (science) from the Department of Global Environmental Sciences, Graduate School of Life and Environmental Sciences, the same university (2006). After working at the National Institute for Environmental Studies, Chiba University Environmental Remote Sensing Research Center, Toyama University, Kyushu University, and Atmosphere and Ocean Research Institute, University of Tokyo (PD, specially appointed researcher, etc.), he has been in his current position since 2017. The main research themes are elucidation of the causes of high-concentration air pollution events.
Akiyoshi Ito
Completed the doctoral program at the Department of Environmental Resources Engineering, Graduate School of Engineering, Hokkaido University in March 2002, Ph.D. (Engineering). He has been a member of the Japan Automobile Research Institute since April 2002, and has been in his current position since 2010. Major activities in recent years include evaluation of the contribution of sources to the atmospheric environment, analysis using atmospheric observation results (constant monitoring stations, etc.), and analysis using atmospheric simulations (CMAQ, etc.).
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