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GDC	
  Monthly	
  Sustainability	
  Forum	
  at	
  Arup	
  
Associates

Lin Wang
Fudan University

October 17, 2013
Regional Haze is becoming a serious problem in
China
1960s

1980s

2000s

(Zhang et al., ACP, 2012)
Extreme air pollution events occurred
雾霾日数实况图
2013年1月7-13日
中央气象台

The long-lasting great haze in January 2013 that
covered...
The cause of extreme pollution and degradation
of visibility ‒ fine particles

Fine particles
PM2.5

Size distribution of
...
By scattering
solar
radiation,
aerosols
increase the
Earthʼs albedo"

Scattering efficiency
is maximum when
particle diamet...
Brown
Carbon"

Black Carbon"

(Moosmuller et al., ACP, 2011)
Global	
  Burden	
  of	
  Diseases	
  2010
Global"

China"
4
8

In	
  China,	
  20%	
  of	
  lung	
  
cancer	
  mortality	...
Global PM2.5 concentrations: 2001-2006

Source: NASA, USA
Scientific Facts:
API, PM10, SO2 and NOx in Shanghai from 2000 to 2011

Courtesy of Prof. Chen JM
Courtesy of Dr. I. Riipinen
WHICH VOCʼs ARE IMPORTANT SOA PRECURSORS?"

Isoprene (C5H8)
Monoterpenes(C10H16)

Sesquiterpenes (C15H24)

Anthropogenic S...
Nucleation:

Courtesy of University of
Helsinki
Complexity – the word to describe fine
aerosol composition
44.9±25.8	
  µg/m3

46.5±25.4	
  µg/m3

32.6±16.2	
  µg/m3

45....
Potential Resolution, USA as an example

London	
  fog	
  and	
  
Los	
  Angeles	
  
photochemical	
  
smog
Clean Air Act
...
Pathway	
  to	
  Control	
  Air	
  PolluEon
Meteorolog
y
Observatio
n
Laboratory

Causes for
Pollution
Characteristics
& P...
Interplay	
  of	
  Policy-­‐maker,	
  industry,	
  and	
  academia

Academia

Industry

Policy-maker
Are We Capable of Cleaning Our Air?
Yes,	
  	
  
but	
  it	
  is	
  a	
  long	
  process	
  that	
  requires	
  the	
  col...
Air Pollution - Scientific Facts and Potential Resolutions
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Air Pollution - Scientific Facts and Potential Resolutions

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Professor Lin WANG received his Ph.D. degree in Environmental Toxicology from University of California, Riverside, USA in 2006. He joined the faculty of Fudan University, Shanghai, China, in 2011 after working at TAMU for several years. His research focuses on atmospheric chemistry and physics, including atmospheric homogeneous chemistry, heterogeneous chemistry, and aerosol chemistry and physics.

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Air Pollution - Scientific Facts and Potential Resolutions

  1. 1. GDC  Monthly  Sustainability  Forum  at  Arup   Associates Lin Wang Fudan University October 17, 2013
  2. 2. Regional Haze is becoming a serious problem in China 1960s 1980s 2000s (Zhang et al., ACP, 2012)
  3. 3. Extreme air pollution events occurred 雾霾日数实况图 2013年1月7-13日 中央气象台 The long-lasting great haze in January 2013 that covered the developed region of China, is already in the oversea textbook   The area suffering from air pollution is about 1.3 million square kilometers   Visibility was less than 500 meters in certain regions
  4. 4. The cause of extreme pollution and degradation of visibility ‒ fine particles Fine particles PM2.5 Size distribution of atmospheric particles
  5. 5. By scattering solar radiation, aerosols increase the Earthʼs albedo" Scattering efficiency is maximum when particle diameter = λ e  articles in 0.1-1 µm" p size range are efficient scatterers of solar radiation 2 (diffraction limit)"
  6. 6. Brown Carbon" Black Carbon" (Moosmuller et al., ACP, 2011)
  7. 7. Global  Burden  of  Diseases  2010 Global" China" 4 8 In  China,  20%  of  lung   cancer  mortality  and  40%   of  Cardiovascular  diseases   mortality  are  related  to   PM2.5  polluEon. Lim et al, Lancet, 2013
  8. 8. Global PM2.5 concentrations: 2001-2006 Source: NASA, USA
  9. 9. Scientific Facts: API, PM10, SO2 and NOx in Shanghai from 2000 to 2011 Courtesy of Prof. Chen JM
  10. 10. Courtesy of Dr. I. Riipinen
  11. 11. WHICH VOCʼs ARE IMPORTANT SOA PRECURSORS?" Isoprene (C5H8) Monoterpenes(C10H16) Sesquiterpenes (C15H24) Anthropogenic SOA-precursors = aromatics (emissions are 10x smaller) "
  12. 12. Nucleation: Courtesy of University of Helsinki
  13. 13. Complexity – the word to describe fine aerosol composition 44.9±25.8  µg/m3 46.5±25.4  µg/m3 32.6±16.2  µg/m3 45.5±32.7  µg/m3 49.6±33.0  µg/m3 34.9±18.9  µg/m3 Spring  2012 Courtesy of SEMC
  14. 14. Potential Resolution, USA as an example London  fog  and   Los  Angeles   photochemical   smog Clean Air Act Harvard 6 city study PM2.5 stardard by EPA American Cancer Society study Global PM2.5 standard by WHO
  15. 15. Pathway  to  Control  Air  PolluEon Meteorolog y Observatio n Laboratory Causes for Pollution Characteristics & Processes Modelling Decision-making by the Administration Exposure– Response Function of PM2.5 Public Health Evaluation of PM2.5
  16. 16. Interplay  of  Policy-­‐maker,  industry,  and  academia Academia Industry Policy-maker
  17. 17. Are We Capable of Cleaning Our Air? Yes,     but  it  is  a  long  process  that  requires  the  collaboraKon   of  everyone  and  every  sector  of  our  society.  

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