Estimation of PM2.5 distribution over mega city based on satellite measurements

2015 Fiscal Year Final Research Report

• Project/Area Number: 25340019
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Kinki University
• Principal Investigator: SANO Itaru 近畿大学, 理工学部, 教授 (10247950)
• Co-Investigator(Renkei-kenkyūsha): MUKAI Sonoyo 京都情報大学院大学, 教授 (00097411) ; NAKATA Makiko 近畿大学, 総合社会学部, 准教授 (80525791)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: PM2.5 / Aerosol / DRAGON

Outline of Final Research Achievements

This work intends to develop a procedure to estimate PM2.5 concentration over mega city in Japan. The procedure is composed of two parts as: 1. Aerosol retrieval from satellite reflectance measurements. 2. Conversion into PM2.5 concentration from retrieved aerosol optical thickness (AOT). The comparison of retrieved AOT from GOSAT/CAI with NASA/AERONET AOT measurements is performed in Osaka region. As results, a root mean square error value of AOT (RMSE-AOT) is around 0.09 in all retrieved wavelengths and the RMSE-AOT at a wavelength of 670 nm over Osaka region is around 0.07. Finally, satellite retrieved PM2.5 concentration also coincides with in situ PM2.5 measurements, RMSE-PM2.5 is around 6 ug/m3.

Free Research Field

環境動態解析