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Air Pollution Trends Opportunities Jeffrey R. Brook Senior Scientist Air Quality Research Division

Air Pollution Trends Opportunities

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Air Pollution Trends Opportunities. Jeffrey R. Brook Senior Scientist Air Quality Research Division. Air quality has improved considerably. Long-Term Trend in “Soot”. Elemental or Black Carbon ( m g/m 3 ). Courtesy of Tom Dann. Decreasing Trend in PM 2.5. - PowerPoint PPT Presentation

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Page 1: Air  Pollution Trends Opportunities

Air Pollution Trends

Opportunities

Jeffrey R. BrookSenior Scientist

Air Quality Research Division

Page 2: Air  Pollution Trends Opportunities

Page 2

Air quality has improved considerably

Page 3: Air  Pollution Trends Opportunities

Page 3

Long-Term Trend in “Soot”

19741976

19781980

19821984

19861988

19901992

19941996

19982000

20022004

20062008

0.0

0.5

1.0

1.5

2.0

2.5

3.0E

C (µ

g/m

³)

EC derived from COH EC

-51% Decrease 1990-2006

Courtesy of Tom Dann

Ele

men

tal o

r Bla

ck C

arbo

n (m

g/m

3 )

Page 4: Air  Pollution Trends Opportunities

Page 4

Decreasing Trend in PM2.5

Ann

ual M

ean

PM

2.5 (

mg/m

3 )

Ann

ual M

ean

Sul

phat

e (m

g/m

3 )

Page 5: Air  Pollution Trends Opportunities

Page 5

Decreasing Trend in NOx

Ann

ual M

ean

NO

2 and

NO

(ppb

)

Page 6: Air  Pollution Trends Opportunities

Page 6

An Environmental Management

Page 7: Air  Pollution Trends Opportunities

Page 7

Ground-level ozone has declined since the early 2000s, however…

Large regions encompassing a large fraction of the population still exceed the new National Standard

Page 8: Air  Pollution Trends Opportunities

Page 8

Hotspots may still pose risks

Ambient Volatile Organic Compound (VOC) levels increasing among monitoring sites near petrochemical industries

Page 9: Air  Pollution Trends Opportunities

Page 9

Traffic Air Pollution remains an important

source of exposure for many Canadians

Air pollution effects occur down to low concentrations

Page 10: Air  Pollution Trends Opportunities

Page 10

Given what has and is expected to be done to regulate emissions …

What else could be considered?

Page 11: Air  Pollution Trends Opportunities

Page 11

Health Benefits of Reducing Diesel Exposure

http://www.iarc.fr/en/media-centre/iarcnews/2012/mono105-info.php

“Scientific evidence is compelling”

Page 12: Air  Pollution Trends Opportunities

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New diesels are much cleanerLegacy heavy duty diesels are potentially on and off our roads for multiple decades to come

$460M

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Page 13

There are also opportunities to improve air quality in Canada through retrofits of the legacy diesel fleet

Some assessmentsSome small pilot tests

Page 14: Air  Pollution Trends Opportunities

Page 14

Air pollution is a factor in asthma and allergy development and/or exacerbation and much of our exposure is “involuntary”

However, all aspects of a child’s environment need to be considered to optimize preventive strategies

Knowledge is still lacking to do this

Page 15: Air  Pollution Trends Opportunities

Page 15

Viruses

Birth Cohort Examining the Origins of Asthma and Allergy

A national platform for multi-disciplinary research on environment and healthFrom asthma to other chronic diseases that develop through the life course

GeneticsImmune phenotypesClinical phenotypesStress

SES

Home environment

Pollution

Work & Schoolenvironment

Diet

Exposures

Pets

N = 3600

Page 16: Air  Pollution Trends Opportunities

Page 16

CHILD is currently following children in Toronto, Winnipeg, Edmonton and Vancouver

Overall air pollution and traffic air pollution are being studied along with many other environmental factors

Stay tuned !