Analysis of PM10 Readings in Beijing, July, 2008 Data from BBC Analysis by Thomas A. Cahill, Professor of Physics and Atmospheric Sciences and Head, DELTA Group, University of California, Davis 95616 http://delta.ucdavis.edu [email protected]
Analysis of PM10 Readings in Beijing, July, 2008 Data from BBC Analysis by Thomas A. Cahill, Professor of Physics and Atmospheric Sciences and Head, DELTA.
Jan 15, 2016
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Analysis of PM10 Readings in Beijing, July, 2008
Data from BBCAnalysis by Thomas A. Cahill,
Professor of Physics and Atmospheric Sciences and Head, DELTA Group, University of California, Davis 95616
http://[email protected]
Publications using HYSPLIT results, maps or other READY products provided by NOAA ARL are requested to include an acknowledgement of, and citation to, the NOAA Air
Resources Laboratory. Appropriate versions of the following are recommended:
CitationDraxler, R.R. and Rolph, G.D., 2003. HYSPLIT (HYbrid Single-Particle Lagrangian
Integrated Trajectory) Model access via NOAA ARL READY Website (http://www.arl.noaa.gov/ready/hysplit4.html). NOAA Air Resources Laboratory, Silver
Spring, MD.
Rolph, G.D., 2003. Real-time Environmental Applications and Display sYstem (READY) Website (http://www.arl.noaa.gov/ready/hysplit4.html). NOAA Air Resources Laboratory,
Silver Spring, MD.
AcknowledgmentThe authors gratefully acknowledge the NOAA Air Resources Laboratory (ARL) for the
provision of the HYSPLIT transport and dispersion model and/or READY website (http://www.arl.noaa.gov/ready.html) used in this publication
HYSPLIT Analyst: Thomas A. Cahill
12
34
56
78
910
1112
1314
1516
1718
1920
2122
2324
25
July, 2008
0
100
200
300
400
Mic
rogr
ams/
m3
PM10 in Beijing by BBC
PM10 in Beijing by BBC
PM-10 Reading
0
50
100
150
200
250
300
350
400
PM-10 Reading
1 121 China S of Beijing
2 172 China S of Beijing
3 122 China S of Beijing
4 351 China S of Beijing
5 112 China S of Beijing
6 27 Mongolia
7 242 China S of Beijing
8 248 China S of Beijing
9 82 China SE of Beijing
10 145 China S of Beijing
11 172 China SE of Beijing
12 8 Mongolia
13 69 Mongolia plus slow SW loop
14 225 China S of Beijing
15 25 China SE of Beijing
16 44 Mongolia
17 12 Mongolia
18 105 China SW of Beijing
19 47 China fast NE of Beijing
20 32 China S of Beijing
21 68 China very slow E of Beijing
22 107 China S and E of Beijing
23 143 China S of Beijing
24 254 China S of Beijing
25 261 China S of Beijing
Summary: about ½ of all days in July, 2008, winds were from south of Beijing with the highest
pollution level; average = 202.2 g/m3
(max = 351 g/m3)
• Trajectories from Mongolia, relatively high wind velocities – avg 23 g/m3 4 days
• Mongolia plus slow SW loop – 69.0 g/m3 1 day• Trajectories south of Beijing, relatively low wind
velocities – avg 202.2 g/m3 12 days• Trajectories south and east of Beijing, relatively
low wind velocities – avg 96.7 g/m3 4 days• Trajectory SW of Beijing – 105 g/m3 1 day• Trajectory NE of Beijing – fast wind velocities –
avg 32.0 g/m3 1 day
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