Figure 7.10: Carbon monoxide (CO) levels and emissions in main centres of population
Return to the point in the document where this figure is located.
Auckland (Khyber Pass Road) CO
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 |
