TY - JOUR
T1 - Analysis of long-range transport effects on PM2.5 during a short severe haze in Beijing, China
AU - Yang, Weilin
AU - Wang, Guochen
AU - Bi, Chunjuan
N1 - Funding Information:
This work was supported by the Natural Science Foundation of China (41271472, J1310028). Specially, thanks for National Urban Air Quality Real-time Publishing Platform for help with hourly mean PM2.5 concentrations data. We also gratefully acknowledge the NOAA Air Resources Laboratory (ARL) for the provision of the HYSPLIT model used in this publication.
Publisher Copyright:
© Taiwan Association for Aerosol Research.
PY - 2017/5/31
Y1 - 2017/5/31
N2 - Comprehensively using Inverse Distance Weighted (IDW) analysis, Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model, three-dimensional (3D) cluster analysis, Weight Potential Source Concentration Function (WPSCF) analysis and other statistic methods, we mainly studied about the spatio-temporal variation, long-range transport and potential source regions of PM2.5 in Beijing during a short severe haze from Dec05 to Dec11, 2015. The results showed that the concentration of PM2.5 decreased from south to north of Beijing. PM2.5 accumulation in the short-severe haze had high correlation with calm and steady meteorological condition (high relative humidity (RH), low wind speed (WS), low boundary-layer temperature (BLT) and surface air pressure (SAP)). In addition, air-flow in different heights (500 m, 1500 m and 3000 m) had different effects on the haze episode and the air flows at 500 m had the greatest contribution of the air pollution. The potential sources were mainly from the desert in northwest of Beijing and the built-up areas in Jing-Jin-Ji zone. Higher WPSCF values (> 0.7) were mainly distributed in Hebei, west Shandong province (around 0.5) and south Tianjin (around 0.5).
AB - Comprehensively using Inverse Distance Weighted (IDW) analysis, Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model, three-dimensional (3D) cluster analysis, Weight Potential Source Concentration Function (WPSCF) analysis and other statistic methods, we mainly studied about the spatio-temporal variation, long-range transport and potential source regions of PM2.5 in Beijing during a short severe haze from Dec05 to Dec11, 2015. The results showed that the concentration of PM2.5 decreased from south to north of Beijing. PM2.5 accumulation in the short-severe haze had high correlation with calm and steady meteorological condition (high relative humidity (RH), low wind speed (WS), low boundary-layer temperature (BLT) and surface air pressure (SAP)). In addition, air-flow in different heights (500 m, 1500 m and 3000 m) had different effects on the haze episode and the air flows at 500 m had the greatest contribution of the air pollution. The potential sources were mainly from the desert in northwest of Beijing and the built-up areas in Jing-Jin-Ji zone. Higher WPSCF values (> 0.7) were mainly distributed in Hebei, west Shandong province (around 0.5) and south Tianjin (around 0.5).
KW - HYSPLIT
KW - Meteorological parameters
KW - PM
KW - Potential sources
KW - Spatio-temporal distribution
UR - http://www.scopus.com/inward/record.url?scp=85020469418&partnerID=8YFLogxK
U2 - 10.4209/aaqr.2016.06.0220
DO - 10.4209/aaqr.2016.06.0220
M3 - Article
AN - SCOPUS:85020469418
SN - 1680-8584
VL - 17
SP - 1510
EP - 1522
JO - Aerosol and Air Quality Research
JF - Aerosol and Air Quality Research
IS - 6
ER -