TY - JOUR
T1 - Numerical simulation of extreme air pollution by fine particulate matter in china in winter 2013
AU - Shimadera, Hikari
AU - Hayami, Hiroshi
AU - Ohara, Toshimasa
AU - Morino, Yu
AU - Takami, Akinori
AU - Irei, Satoshi
PY - 2014
Y1 - 2014
N2 - In winter 2013, extreme air pollution by fine particulate matter (PM2.5) in China attracted much public attention. In order to simulate the PM2.5 pollution, the Community Multiscale Air Quality model driven by the Weather Research and Forecasting model was applied to East Asia in a period from 1 January 2013 to 5 February 2013. The model generally reproduced PM2.5 concentration in China with emission data in the year 2006. Therefore, the extreme PM2.5 pollution seems to be mainly attributed to meteorological (weak wind and stable) conditions rather than emission increases in the past several years. The model well simulated temporal and spatial variations in PM2.5 concentrations in Japan as well as China, indicating that the model well captured characteristics of the PM2.5 pollutions in both areas on the windward and leeward sides in East Asia in the study period. In addition, contribution rates of four anthropogenic emission sectors (power generation, industrial, residential and transportation) in China to PM2.5 concentration were estimated by conducting zero-out emission sensitivity runs. Among the four sectors, the residential sector had the highest contribution to PM2.5 concentration. Therefore, the extreme PM2.5 pollution may be also attributed to large emissions from combustion for heating in cold regions in China.
AB - In winter 2013, extreme air pollution by fine particulate matter (PM2.5) in China attracted much public attention. In order to simulate the PM2.5 pollution, the Community Multiscale Air Quality model driven by the Weather Research and Forecasting model was applied to East Asia in a period from 1 January 2013 to 5 February 2013. The model generally reproduced PM2.5 concentration in China with emission data in the year 2006. Therefore, the extreme PM2.5 pollution seems to be mainly attributed to meteorological (weak wind and stable) conditions rather than emission increases in the past several years. The model well simulated temporal and spatial variations in PM2.5 concentrations in Japan as well as China, indicating that the model well captured characteristics of the PM2.5 pollutions in both areas on the windward and leeward sides in East Asia in the study period. In addition, contribution rates of four anthropogenic emission sectors (power generation, industrial, residential and transportation) in China to PM2.5 concentration were estimated by conducting zero-out emission sensitivity runs. Among the four sectors, the residential sector had the highest contribution to PM2.5 concentration. Therefore, the extreme PM2.5 pollution may be also attributed to large emissions from combustion for heating in cold regions in China.
KW - Air quality model
KW - China
KW - Residential combustion
KW - WRF/CMAQ
UR - http://www.scopus.com/inward/record.url?scp=84898887461&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84898887461&partnerID=8YFLogxK
U2 - 10.5572/ajae.2014.8.1.025
DO - 10.5572/ajae.2014.8.1.025
M3 - Article
AN - SCOPUS:84898887461
VL - 8
SP - 25
EP - 34
JO - Asian Journal of Atmospheric Environment
JF - Asian Journal of Atmospheric Environment
SN - 1976-6912
IS - 1
ER -