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Figure 7.10: Carbon monoxide (CO) levels and emissions in main centres of population

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Auckland (Khyber Pass Road) CO

Legend for the graphs.

Auckland (Takapuna) CO

Hamilton CO

Wellington (Upper Hutt) CO

Christchurch (St Albans) CO

Notes:

(1) The size of the pie graphs is proportional to the amount of emissions in each location represented.

(2) Auckland emissions represent daily emissions throughout the year rather than daily emissions during winter.

(3) A different scale is used on the Christchurch (St Albans) graph.

(4) No data is available for Dunedin.

(5) mg/m3 = milligrams per cubic metre.

Data sources: Data compiled from Air and Environmental Services Ltd, 2001; Auckland Regional Council, 2006a; Auckland Regional Council, 2006b; Environment Canterbury, 2004; Environment Canterbury, 2006; Environment Waikato, 2006a; Environment Waikato, 2006b; Greater Wellington Regional Council, 2005.

Text description of figure

Emissions of CO by sector for main centres

Emissions

Auckland

Christchurch (winter)

Wellington (winter)

Hamilton (winter)

171200 t/yr

199000kg/day

202500kg/day

66719kg/day

Sector

Transport

85%

51.00%

66.00%

68.00%

Domestic

13%

48.00%

29.00%

30.00%

Industry

2%

1.00%

1.00%

0.00%

Other

 

 

4.00%

2.00%

 

Carbon monoxide (CO) levels and emissions in main centres of population

 

Auckland (Khyber Pass Road)

Auckland ( Takapuna)

Christchurch,  St Albans

Upper Hutt, Wellington 

Hamilton

Year

8hr max (µg/m3)

Annual average

8hr max (µg/m3)

Annual average

8hr max (µg/m3)

Annual average

8hr max (µg/m3)

Annual average

8hr max (µg/m3)

Annual average

1988

 

 

 

 

 

 

 

 

 

 

1989

 

 

 

 

23

0.9

 

 

 

 

1990

 

 

 

 

27

1.2

 

 

 

 

1991

 

 

 

 

23

 

 

 

 

 

1992

 

 

 

 

29

1.8

 

 

 

 

1993

 

 

 

 

22

1.4

 

 

 

 

1994

 

 

 

 

28

0.9

 

 

 

 

1995

 

 

6.9

 

14

1

 

 

 

 

1996

 

 

8.7

 

20

1

 

 

 

 

1997

14.3

3.4

9.6

0.8

19

0.9

 

 

 

 

1998

14.2

2.9

7.3

0.8

13

0.8

 

 

5.4

0.6

1999

11.4

2.7

8.7

 

18

0.8

 

 

3.9

0.6

2000

9.8

2.5

 

 

13

0.6

 

 

2.9

0.4

2001

9.3

2.0

8.6

 

12

0.7

3.9

0.35

7.2

0.6

2002

8.7

2.0

6.6

0.7

14

0.6

4.1

0.34

5.2

0.6

2003

8.6

2.0

6.7

0.8

10

0.6

2.7

0.2

6.6

0.5

2004

8.6

2.2

5.9

0.5

10

0.5

3.4

0.25

7.2

0.7

2005

7.4

1.8

6.3

0.5

8

0.4

3.1

0.2

3.9

0.7