Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search

 

Hawke’s Bay Air Quality Science Informs WHO Review

Media Release

8 May 2014

Hawke’s Bay Air Quality Science Informs WHO Review

Hawke’s Bay is doing as well as, if not better than, many other towns and cities in New Zealand in terms of air quality, says Hawke’s Bay Regional Council scientists in response to a report from the World Health Organisation.

The United Nations public health arm has released a report of outdoor air quality in 1600 cities across 91 countries. Subsequent news reports have stated that many smaller centres have worse air quality than metropolitan Auckland.

The World Health Organisation (WHO) used figures supplied by the Ministry for the Environment based on data supplied by regional councils. These figures are the annual mean concentrations of fine particulate matter, which are particles smaller than 10 micrometres per cubic metre of air (ie PM10).

HBRC air scientist Dr Kathleen Kozyniak says that annual mean PM10 concentrations for both Napier and Hastings are lower than the MfE’s Ambient Air Quality Guideline value of 20 micrograms per cubic metre. They rank similarly to Auckland at 14 and 15 micrograms per cubic metre respectively.

Dr Kozyniak says that HBRC was advised last year that WHO would be collecting data, and councils had the opportunity to verify their monitoring information.

“On the whole there has been a pleasing decrease in PM10 concentrations in our two cities since monitoring began in 2005/6,” says Dr Kozyniak.

“From 2010 to 2012 we saw Hastings concentrations drop from 17 to 15 micrograms per cubic metre and Napier’s from 15 to 14 micrograms per cubic metre. Having said that, there was a blip upward in concentrations last year in both cities for a number of possible reasons, such as the light winds we had last winter. I’m aware there was a similar pattern in other NZ centres’ air quality too.”

Dr Kozyniak says that weather plays a part in air quality.

“Hawke’s Bay’s winters may be blessed with days of fine blue skies and calm conditions in winter but, although they cheer the heart, these are conditions which trap smoke close to the ground. Some of the centres listed in the news report have windier and wetter conditions which help to clear the air.”

Hawke’s Bay Regional Council has conducted emissions inventories (2005 and 2010, another is due next year) which indicate that domestic fire emissions contribute more than 90% of the wintertime concentrations of PM10.

HBRC’s Heatsmart Programme Manager, Mark Heaney, says that council’s Heatsmart scheme for upgrading older model wood burners to more efficient modern burners or heat pumps means that people can expect to see PM10 concentrations progressively decrease.

“The quality of the air in Napier and Hastings during winter still needs to improve and we all have to work towards that. It has been encouraging to advise a lot of people over the past few months on the choices they can make for home heating and how to take advantage of the Council’s funding assistance package.”

Below are graphs for Napier and Hastings average winter only concentrations, as compared to the annual average quoted by WHO. These graphs are adjusted to take account of the variation in weather between winters. Overall the trend is downward, but with a blip last year.

Napier

Hastings

Note – micrograms per cubic metre are shown as µgm-3

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

Budget '17: Budget Spends Down Future Surpluses

Tax cuts for every working New Zealander, targeted to low and middle income earners, more generous assistance for families and renters, and a massive spend-up on public services infrastructure mark Finance Minister Steven Joyce’s election year Budget.

The package of changes to income tax thresholds, the Working for Families programme, and the Accommodation Supplement is the Budget’s political centrepiece and will cost $2 billion a year. More>>

Scoop Full Coverage: of Budget Announcements & Reaction
Latest: Scoop Search

ALSO:

 
 

Auditor-General Stands Down For Investigation: Gordon Campbell On (Not) Taking Responsibility

So Martin Matthews, our current Auditor-General wishes he could have detected “earlier” the fraud that occurred on his watch at the Ministry of Transport. Hmmm. But he could have detected it earlier, surely? That’s the point. More>>

ALSO:

NGOs Pleased: Govt To Halt Collection Of Client Data

Brenda Pilott, the chair of ComVoices and national manager of Social Service Providers Aotearoa, congratulates the government on its decision to call a halt to the collection of individual client data until the concerns of not-for-profit service providers have been worked through. More>>

ALSO:

Gosh: Blasphemy Law Repeal Struck Down

Chris Hipkins, the MP who tabled a Supplementary Order Paper to add our Blasphemy Law to the Statutes Repeal Bill, said this was a "sad day for freedom of speech, tolerance, and leadership". More>>

ALSO:

Gordon Campbell: On The Navy’s Dealings With Fat Leonard, And Twin Peaks

At an official level, our “she’ll be right” attitude routinely spills over into a keen resentment of anyone who suggests the outcomes may be less than satisfactory… The Navy has now gone one step beyond. It won’t even ask itself whether it did a good job. More>>

ALSO:

NZDF: Fifth Rotation Of Troops Heads To Iraq

The fifth rotation of New Zealand Defence Force troops left today for a six-month mission training Iraqi soldiers. More>>

ALSO:

Gordon Campbell: On The Demonising Of Iran

Will New Zealand still be willing to pursue its recent trade overtures to Iran, now that US President Donald Trump has used his speech in Riyadh to single out Iran as the main source of terrorism and instability in the Middle East? More>>

ALSO:

 
 
 
 

Opening The Election Supporters

 

LATEST HEADLINES

  • PARLIAMENT
  • POLITICS
  • REGIONAL
 
 

Featured InfoPages

Opening the Election