2009 Fiscal Year Final Research Report

Development of the system to disclose the spatial distribution of aerosol absorption coefficients in real time

Research Project

Project/Area Number	19510003
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Environmental dynamic analysis
Research Institution	Hokkaido University
Principal Investigator	YAMAGATA Sadamu Hokkaido University, 大学院・工学研究科, 助教 (80220242)
Project Period (FY)	2007 – 2009
Keywords	環境計測 / 大気モニタリング / すす / ディーゼル排ガス / 光ファイバー / SKYNET
Research Abstract	Techniques for high-precision measurement and automatic data retrieval were developed for the tape-filter type absorption photometer designed by the researcher to measure absorption coefficients of atmospheric aerosol particles. Five systems were installed in monitoring station in Sapporo city to observe the variation of absorption coefficients. They consist of two parts ; those transported from outside of the city and those emitted inside the city mainly from automobile. From the statistical back trajectory analysis it was suggested that absorption coefficients in Sapporo is influenced by the air mass transported from big cities and industrial areas in China and Korea.