Air quality in the Otago region: Airshed 3 – Central Dunedin
More detailed air quality information, including data for other towns, can be found on the Otago Regional Council website.
Otago Airshed 3 (Central Dunedin and Oamaru)
Otago Airshed 3 (Central Dunedin and Oamaru) PM10 Exceedences
Note: The NES target for this airshed is provisional.
| Year | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
|---|---|---|---|---|---|---|
| Method | Hi-vol | MetOne BAM1020 | MetOne BAM1020 | MetOne BAM1020 and EBAM | MetOne BAM1020 and EBAM | MetOne BAM1020 and EBAM |
| Valid data (%) | less than 50% | 62% annual, 100% winter | 77% annual; 100% winter | 98% annual; 100% winter | 80% annual; 100% winter | Varies annual; 100% winter |
| No of exceedences PM10 | 1 | 7 | 2 | 11 | 8 | 14 |
| 2nd highest 24 hour average | 45 | 57 | 50 | 66 | 70 | 62 |
| Highest 24-hour average | 52 | 86 | 59 | 70 | 77 | 76 |
| Annual average | <75% valid data | <75% valid data | 20 | 24 | 20 | 25 |
Source: Otago Regional Council
Note:
(1) The 2009 highest 24-hour average value for this airshed was due to transboundary pollution from the Australian dust storms. The exceedance due to this event has not been included in this table.
(2) The 2008 annual average is for Dunedin only as Oamaru did not have the required 75% data capture.
(3) The 2009 annual average and percentage of valid data is for Dunedin only as Oamaru and Balclutha did not have the required 75% data capture.
(4) Results from 2005 to 2007 are for Dunedin only. Results from 2008 are a consolidation of Central Dunedin and Oamaru. Results from 2009 are a consolidation of Dunedin, Oamaru and Balclutha.
(5) The 2010 annual average is taken from Dunedin.
Last updated: 2 August 2011
