Hedley

Information about Hedley

Published on November 12, 2007

Author: UpBeat

Source: authorstream.com

Content

Hong Kong is a beautiful city:  Hong Kong is a beautiful city Sunday 1 August 2004 Photo: Edward Stokes; Hong Kong Conservation Photography Foundation However, sometimes less so… Tuesday 4 January 2005 Photo: Edward Stokes; Hong Kong Conservation Photography Foundation AIR POLLUTION IN HONG KONG and the PEARL RIVER DELTA AJ Hedley1, SM McGhee1, W Barron2, PYK Chau1, J Chau1, TQ Thach1, TW Wong3, C Loh4, CM Wong1 1 University of Hong Kong 2 University of Science and Technology 3 Chinese University of Hong Kong 4 Civic Exchange Slide3:  BAD AIR, BAD PRESS Slide4:  (microgram per cubic meter) Pollution (RSP) Vancouver 2004 (13) Shanghai, Guangzhou 2004 (99) London 2005 (30) Paris 2003 (21) New York 2003 (22) Los Angeles 2003 (44) Hong Kong 2004 (62) Hong Kong AQO WHO AQG Hong Kong roadside 2004 (80) HONG KONG IS WORSE THAN MOST CITIES Monthly concentration of PM10 in year 2001-05:  Monthly concentration of PM10 in year 2001-05 Time Concentration (mg/m3) Roadside General Source: Environmental Protection Department/ Department of Community Medicine HKU Proposed WHO PM10 (annual) = 20 Hong Kong PM10 AQO (annual) = 55 Slide6:  Before After On July 1st 1990 the Environmental Protection Department restricted the sulphur content of fuel to 0.5% by weight The Hong Kong air quality intervention 1990 Kwai Tsing Slide7:  AIR POLLUTANT CONCENTRATIONS 1988 - 95 IN HONG KONG HALF YEARLY MEAN LEVELS Slide8:  Effect of conversion to low sulfur fuel (0.5%) on transition metals mbefore=9.48; mafter =2.87; p =0.000 mbefore=24.73; mafter =3.95; p =0.000 Slide9:  Reductions in cardiopulmonary deaths after sulfur restriction 1990 All causes Cardiovascular Respiratory % Reduction in annual trend -6 -5 -4 -3 -2 -1 0 15-64 65+ 15-64 65+ 15-64 65+ -1.8% -2.8% -1.6% -2.4% -4.8% -4.2% Slide10:  Monthly Trends of SO2, Ni, V in Year 2001-04 Concentration (SO2: mg/m3; V/Ni: ng/m3) Month Data source: HKEPD; Plotting: Chau/Hedley 2006 p=0.001 p=0.129 p=0.048 SO2 Ni V Slide11:  Hazy days Number per year Year Source: Hong Kong Observatory Hong Kong: Annual decline in visibility An analysis directed to Government Legislators, media and public:  An analysis directed to Government Legislators, media and public Understanding the connection between visibility, air pollution and health costs in pursuit of accountability, environmental justice and health protection Slide13:  Visibility and pollutants in Hong Kong MICROGRAM PER CUBIC METER Source of data: Environmental Protection Department Slide14:  Hourly visibility on the days the photographs were taken Source of data: Hong Kong Observatory Four levels of air quality: General and roadside:  Four levels of air quality: General and roadside * Based on general monitoring stations except the background monitoring station at Tap Mun Chau Slide16:  Potential improvements in air quality in Hong Kong 0 20 40 60 80 100 (microgram per cubic meter) Pollution Hong Kong 2004 (62) Good Better Average average to better average to good Poor % of days at these levels in Hong Kong 2% 8% 44% 43% 2% Slide17:  Doctor visits, hospital admissions and deaths: Excess risks and avoidable events From time series, excess risks of: * family doctor visits * hospital admissions for cardiopulmonary disease * all causes mortality For each pollutant (P) we estimated the impact (I), as avoidable events for each health outcome, from air quality improvement as NI *ERP *LP = IP Avoidable events and IP * CI = Avoidable costs UNIT COSTS IN ESTIMATION OF AVOIDABLE COSTS:  UNIT COSTS IN ESTIMATION OF AVOIDABLE COSTS From gazetted public sector and surveys costs of: * in-patient and ambulatory care * travel costs * productivity loss From surveys, willingness-to-pay to avoid: * symptoms (cough) day * hospital admission * death Slide19:  Estimation of health impact and costs: Single or multiple pollutants? In Shanghai, Wuhan and Hong Kong the largest mortality excess risks are for NO2 and SO2, robust in 2-pollutant models The Hong Kong sulfur restriction led to reduction in mortality of 1% per 10µg/m3 SO2 in the absence of change in RSP, NO2 and O3 In Hong Kong the largest effect on hospital admissions for cardiopulmonary disease is associated with NO2; in London with RSP Slide20:  Correlation between pollutants Partial correlation between NO2 and SO2 adjusted by RSP (1-[0.768]2) = 0.41 NO2 (1-[0.067]2 – [0.39]2) = 0.84 SO2 Slide21:  Estimating the total contribution of pollutants to the burden of health effects and costs Main estimate: T = RSP + 0.41 NO2 + 0.84 SO2 + O3 Sensitivity analysis: “At least impact”-highest single pollutant effect for each outcome RSP + O3 (WHO 2003) SO2 intervention effect (mortality) Slide22:  Poor Avoidable events: Deaths 0 20 40 60 80 100 (microgram per cubic meter) Pollution Hong Kong 2004 Good Better Average 1,300 Slide23:  Poor 0 20 40 60 80 100 (microgram per cubic meter) Pollution Hong Kong 2004 Good Better Average 60,000 Avoidable events: Hospital bed days Slide24:  Poor 0 20 40 60 80 100 (microgram per cubic meter) Pollution Hong Kong 2004 Good Better Average 6,700,000 Avoidable events: Doctor visits Slide25:  Annual $ Value of air quality improvement US$ M Total: US$2250M Total: US$246M Direct health costs & productivity loss avoided Intangible costs for pain & suffering + US$ M Slide26:  Results of sensitivity analysis on annual avoidable mortality and costs if pollution levels reduce from Average to Good levels * Mortality NO2; Admissions NO2; Family doctor visits RSP Slide27:  THE HKSAR GOVERNMENT RESPONSE “The costs are indirect” “Other cities have worse levels of pollution” “More evidence is needed on health effects” People need to understand that “clearer skies may cost consumers more” Slide29:  Canada guideline (24hr) = 25 NZ guideline (annual) = 20 Non-roadside Reach HK AQO = Year 1996 Reach Canada guideline = Year 2026 Reach NZ guideline = After year 2031 Roadside Reach HK AQO = Year 2008 Reach Canadian guideline = Year 2015 Reach NZ guideline = Year 2016 RSP: Projected trends in Hong Kong Slide30:  THE NEED for EFFECTIVE MULTI-SECTORAL STRATEGIES Local and regional sources Near term technical solutions Mid term technical priorities Long term structural solutions * Cleaner fuels * Urban design * Euro IV & V * Manufacturing * Flue gas sulpurization * Power sector * Rail rather than roads * Transport Hong Kong: 1987 Air Quality Objectives:  Hong Kong: 1987 Air Quality Objectives 0 20 40 60 80 100 Hong Kong AQO 1987 WHO AQG 2006 PM2.5 PM10 /SO2 NO2 Hong Kong (2004) Average Pollutant Levels RSP/NO2 (General) RSP (Roadside) NO2 (Roadside) 150 10 SO2 NO2 PM10 HK WHO Slide33:  Reduction in Bronchial Hyper-Reactivity Slide34:  Non-roadside Reach Euro guideline = Year 2017 HK Air Quality Objective (annual) = 80 Euro guideline = 40 Roadside Reach HK AQO = Year 2010 Reach Euro guideline = After year 2030 Nitrogen Dioxide Slide35:  Visibility and pollutants in Hong Kong MICROGRAM PER CUBIC METER Source of data: Environmental Protection Department

Related presentations


Other presentations created by UpBeat

Making Disciples
17. 06. 2007
0 views

Making Disciples

CVA Final Version 2006
06. 12. 2007
0 views

CVA Final Version 2006

Children Animals
03. 10. 2007
0 views

Children Animals

whole grains
04. 10. 2007
0 views

whole grains

07 peering and te with bgp
07. 10. 2007
0 views

07 peering and te with bgp

climate promoting sd china
12. 10. 2007
0 views

climate promoting sd china

ppt forest policy
27. 11. 2007
0 views

ppt forest policy

ch04dp3
01. 12. 2007
0 views

ch04dp3

Chairman Award 2 Hickok
02. 11. 2007
0 views

Chairman Award 2 Hickok

Nancy Kerrigan
05. 11. 2007
0 views

Nancy Kerrigan

Academia Sinica 05 30 Sep
15. 11. 2007
0 views

Academia Sinica 05 30 Sep

19361
15. 11. 2007
0 views

19361

Possessives Apostrophe
20. 11. 2007
0 views

Possessives Apostrophe

Malaysia
26. 11. 2007
0 views

Malaysia

compliance
19. 12. 2007
0 views

compliance

upload c beatles64 6n22
21. 12. 2007
0 views

upload c beatles64 6n22

Azerbaijan PPT VCMar02
29. 12. 2007
0 views

Azerbaijan PPT VCMar02

final mccc yougov report
30. 12. 2007
0 views

final mccc yougov report

MikeWhiteDDDMDec1106
05. 11. 2007
0 views

MikeWhiteDDDMDec1106

OpenMPI OpenIB
03. 01. 2008
0 views

OpenMPI OpenIB

what is AI
05. 01. 2008
0 views

what is AI

Basic Plant Physiology
07. 01. 2008
0 views

Basic Plant Physiology

blm doe levy
07. 01. 2008
0 views

blm doe levy

AC004
31. 12. 2007
0 views

AC004

ravi keynote
11. 10. 2007
0 views

ravi keynote

globalisation 2008
24. 02. 2008
0 views

globalisation 2008

19741
06. 03. 2008
0 views

19741

james rigney
21. 03. 2008
0 views

james rigney

ShipToAverage
07. 11. 2007
0 views

ShipToAverage

World Indigo Market Monkeys
27. 03. 2008
0 views

World Indigo Market Monkeys

ch09 1
28. 12. 2007
0 views

ch09 1

1992 stations cross esquivel
07. 04. 2008
0 views

1992 stations cross esquivel

A105 017 Blackholes
28. 11. 2007
0 views

A105 017 Blackholes

laurence millar
28. 03. 2008
0 views

laurence millar

lule
09. 04. 2008
0 views

lule

no5
10. 04. 2008
0 views

no5

Energy Scenarios
13. 04. 2008
0 views

Energy Scenarios

disnqmwrqn5ghio
17. 04. 2008
0 views

disnqmwrqn5ghio

Kids Landscape2004
22. 04. 2008
0 views

Kids Landscape2004

46 DNT Japan Tsuji
09. 10. 2007
0 views

46 DNT Japan Tsuji

EPUK presentation FINAL
16. 11. 2007
0 views

EPUK presentation FINAL

adetajan2007
13. 12. 2007
0 views

adetajan2007

ENCHANTED DOLLS
02. 10. 2007
0 views

ENCHANTED DOLLS

nclb overview
28. 11. 2007
0 views

nclb overview

180 07 lec9
16. 11. 2007
0 views

180 07 lec9

china standards retro
12. 10. 2007
0 views

china standards retro

Chapter 20 Outline
11. 12. 2007
0 views

Chapter 20 Outline

2004SellingInChina JamesColony
10. 10. 2007
0 views

2004SellingInChina JamesColony

Psychology and Political Thought
07. 01. 2008
0 views

Psychology and Political Thought

Love 2
17. 06. 2007
0 views

Love 2

Love 1
17. 06. 2007
0 views

Love 1

Love Your Body
17. 06. 2007
0 views

Love Your Body

Love Story Slides 4 Eric
17. 06. 2007
0 views

Love Story Slides 4 Eric

love not leave
17. 06. 2007
0 views

love not leave

Love Dynamics
17. 06. 2007
0 views

Love Dynamics

love eco
17. 06. 2007
0 views

love eco

Medieval lyrics
17. 06. 2007
0 views

Medieval lyrics

MDA USC 2007
17. 06. 2007
0 views

MDA USC 2007

MDA AAAI 2004
17. 06. 2007
0 views

MDA AAAI 2004

Lucy AM
17. 06. 2007
0 views

Lucy AM

lemonade 8
10. 10. 2007
0 views

lemonade 8

esslli07 3
22. 11. 2007
0 views

esslli07 3

BNLTRIP LArTPC Bock
08. 11. 2007
0 views

BNLTRIP LArTPC Bock

Love Your Body2
17. 06. 2007
0 views

Love Your Body2

Lucy PM
17. 06. 2007
0 views

Lucy PM

Season change1
02. 11. 2007
0 views

Season change1

prÃsentationecole
05. 11. 2007
0 views

prÃsentationecole

marcenasjourney
05. 11. 2007
0 views

marcenasjourney

Nets1
28. 12. 2007
0 views

Nets1

SPS Search MSDN evening 030604
12. 12. 2007
0 views

SPS Search MSDN evening 030604

From Crayon to Mouse
18. 12. 2007
0 views

From Crayon to Mouse

The Presentation
14. 03. 2008
0 views

The Presentation

ev
21. 11. 2007
0 views

ev

trt02 eccles
05. 11. 2007
0 views

trt02 eccles

Digging Dinos
12. 09. 2007
0 views

Digging Dinos