Air pollutant emissions

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Creative Commons Attribution 4.0 International

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7372
90
Added
16 Oct 2018

This dataset was first added to MfE Data Service on 16 Oct 2018.

An emissions inventory provides information on the amount of key air pollutants that are released into the atmosphere for a given location over a given time period. This enables us to identify sources of pollutants. By understanding the amounts that different sources contribute, air quality can be better managed and modelled.
We evaluated emissions for five key pollutants for 2015, the most-recent year that data were readily available: particulate matter (PM) less than 10 micrometres in diameter (PM10), PM less than 2.5 micrometres in diameter (PM2.5), carbon monoxide (CO), nitrogen oxides (NOx), and sulphur dioxide (SO2), because they are the most important pollutants in New Zealand.
The grouped sources include: energy-related activities, construction dust, road dust, industrial process emissions (non-combustion), agriculture (emissions from animal housing), vegetation fires (burning agricultural residue and biomass burning), and incinerating of hazardous waste.
Only human-generated emissions were included in this emission inventory. No updated data for residential wood burning were available and was assumed to be the same as the 2013 national inventory.

Table ID 98424
Data type Table
Row count 26
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Road motor vehicle emissions

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Creative Commons Attribution 3.0 New Zealand

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7146
77
Added
16 Sep 2015

This dataset was first added to MfE Data Service on 16 Sep 2015.

Road motor vehicles emit a range of air pollutants from their exhausts, and from brake and tyre wear. They are the main human-made source of nitrogen oxides and carbon monoxide emissions. Exposure to these pollutants can damage health, with effects ranging from respiratory irritation to cancer.

Road motor vehicles range from passenger vehicles to heavy commercial vehicles, including petrol and diesel vehicles. Vehicles for use in farm and construction are not included. While road motor vehicle travel predominantly involves petrol vehicles (approximately 73 percent of vehicle kilometres travelled), diesel vehicles (approximately 27 percent of vehicle kilometres travelled) contribute the majority of air pollutants from road motor vehicles – specifically particulate matter and nitrogen oxides (NIWA, 2015; Parliamentary Commissioner for the Environment, 2015).

This dataset relates to the "Road motor vehicle emissions" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52433
Data type Table
Row count 130
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Sulphur dioxide concentrations, 2008–17

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Creative Commons Attribution 4.0 International

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5559
45
Added
16 Oct 2018

This dataset was first added to MfE Data Service on 16 Oct 2018.

Sulphur dioxide (SO2) is a highly reactive gas formed when fuels containing sulphur, such as coal or petrochemical products (including high-sulphur ship fuel), are burned. It is also produced from industrial processes such as superphosphate fertiliser production and smelting sulphur-containing metal ores. Geothermal and volcanic gases are the main natural sources of sulphur dioxide.
When inhaled, sulphur dioxide is associated with respiratory problems such as bronchitis. It can aggravate the symptoms of asthma and chronic lung disease and cause irritation to eyes. On days with higher sulphur dioxide levels, hospital admissions for cardiac disease and mortality increase. In ecosystems, it can injure vegetation, acidify water and soil, and affect biodiversity.
More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.

Table ID 98421
Data type Table
Row count 554866
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

PM10 concentrations, 2006–17

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Creative Commons Attribution 4.0 International

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3735
58
Added
15 Oct 2018

This dataset was first added to MfE Data Service on 15 Oct 2018.

Particulate matter (PM) comprises solid and liquid particles in the air. PM10 particles have a diameter less than 10 micrometres. Coarse particles (2.5–10 micrometres) can be inhaled – they generally deposit in the upper airways; fine particles (smaller than 2.5 micrometres) can deposit deep in the lungs where air-gas exchange occurs. Children, the elderly, and people with existing heart or lung issues have a higher risk of health problems from exposure to PM10. These problems include decreased lung function, heart attack, and mortality.
Human-generated PM10 sources include burning wood and coal for home heating, and traffic emissions (eg combustion, tyre and brake wear, and pavement breakdown). Natural sources include sea salt, dust, pollen, and mould spores.
More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.

Table ID 98414
Data type Table
Row count 209964
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

National PM10 concentrations 2006–13

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Creative Commons Attribution 3.0 New Zealand

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7268
55
Added
16 Sep 2015

This dataset was first added to MfE Data Service on 16 Sep 2015.

Particulate matter 10 micrometres or less in diameter (PM10) in the air comprises solid particles and liquid droplets from both natural and human-made sources. PM10 can be emitted from the combustion of fuels, such as wood and coal (eg from home heating and industry), and petrol and diesel (from vehicles). Natural sources of PM10 include sea salt, dust, pollen, smoke (from bush fires), and volcanic ash. Nationally, burning wood or coal for home heating is the main human-made source of PM10.

PM10 is of particular concern because it is found in high concentrations in some areas and can damage health. It is associated with effects ranging from respiratory irritation to some forms of cancer.

Column headings:
- Con_mcg_m3 = Concentration in micrograms per cubic metre (μg/m3)

This dataset relates to the "PM10 annual average concentrations" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52442
Data type Table
Row count 8
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Sulphur dioxide concentrations and exceedances 2005–13

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Creative Commons Attribution 3.0 New Zealand

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4895
36
Added
16 Sep 2015

This dataset was first added to MfE Data Service on 16 Sep 2015.

Sulphur dioxide (SO2) is a gas produced from human (eg industry and shipping) and natural (geothermal and volcanic) activities. Nationally, the main human-made source of sulphur oxides emissions is industry. SO2 is associated with respiratory problems, such as bronchitis, and can aggravate the symptoms of asthma and chronic lung disease.

Column headings:
- Disp_graph - Displayed on graph (1= yes, 0 = no)

This dataset relates to the "Sulphur dioxide concentrations" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52461
Data type Table
Row count 468
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Ground-level ozone concentrations, Auckland, 2001–16

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Creative Commons Attribution 4.0 International

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3083
18
Updated
20 Nov 2019

This dataset was last updated on MfE Data Service on 20 Nov 2019.

Ground-level (tropospheric) ozone (O3) exists at a natural background level but is also produced when nitrogen oxides (NOx) and volatile organic compounds from vehicle emissions, petrol fumes, industrial processes solvents, and other human-made sources react in the presence of sunlight. It is the primary component of photochemical smog.
Ozone also occurs naturally in the stratosphere, where it protects us from ultraviolet radiation – this ozone occasionally can mix downwards to ground level.
Because sunlight and warmth are required for the chemical reactions that form ground-level ozone, peak concentrations often occur in summer when daylight hours are longer and temperatures are higher. Since the precursors for ozone can travel downwind from their sources before they react with sunlight, ozone concentrations can be high many kilometres from the precursor emissions’ sources.
Exposure to high concentrations of ozone can cause respiratory health problems and is linked to cardiovascular health problems and mortality. It can also damage vegetation.
More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.

Table ID 98423
Data type Table
Row count 535064
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Seasonality of PM2.5 exceedances

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Creative Commons Attribution 3.0 New Zealand

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4979
14
Added
16 Sep 2015

This dataset was first added to MfE Data Service on 16 Sep 2015.

PM2.5 are particles 2.5 micrometres or less in diameter. PM2.5 is emitted from the combustion of fuels, such as wood and coal (eg from home heating and industry), and petrol and diesel (eg from vehicles). Natural sources have less influence on PM2.5 concentrations than PM10 concentrations. This means PM2.5 comes mainly from human activities. Nationally, burning wood or coal for home heating is the main source of PM2.5.

PM2.5 is a component of PM10 and is associated with similar health effects, ranging from respiratory irritation to some forms of cancer. However, the smaller PM2.5 particles are more closely associated with severe health problems.

This dataset relates to the "Seasonality of PM2.5 exceedances" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52435
Data type Table
Row count 12
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

PM2.5 concentrations, 2008–17

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Creative Commons Attribution 4.0 International

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4682
68
Added
15 Oct 2018

This dataset was first added to MfE Data Service on 15 Oct 2018.

PM2.5 is made up of solid and liquid particles in the air with a diameter of less than 2.5 micrometres. In New Zealand, most PM2.5 in the air results from combustion (burning wood for home heating, motor-vehicle exhaust), and to a lesser extent, particles formed from reactions in the atmosphere (secondary PM) and naturally occurring sea salt.
Short- and long-term exposure to PM2.5, even at low levels, is linked to respiratory and cardiovascular disease, and increased risk of premature death, especially in vulnerable people (the young, the elderly, and people with respiratory illness). Emerging evidence points to possible links with cognitive function, neuro-development, and diabetes.
More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.

Table ID 98413
Data type Table
Row count 33750
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Total suspended particulates concentration in Auckland, 1965–2013

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Creative Commons Attribution 3.0 New Zealand

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4750
21
Added
16 Sep 2015

This dataset was first added to MfE Data Service on 16 Sep 2015.

Total suspended particulates (TSP) consist of all solid particles and liquid droplets up to 100 micrometres (μm) in diameter (ie when compared with PM10 and PM2.5, TSP is the equivalent of PM100).

TSP can be emitted from the combustion of fuels, such as wood and coal (eg from home heating and industry) and petrol and diesel (from vehicles). Natural sources of TSP include sea salt, dust, pollen, smoke (from bush fires), and volcanic ash. TSP also forms from reactions between gases or between gases and other particles.

The smaller components of TSP (PM10 and PM2.5) are associated with health effects ranging from respiratory irritation to some forms of cancer. Reporting on changes in TSP concentrations helps us understand long-term changes in particulate matter pollution.

Column headings:
- Con_mcg_m3 = Concentration in micrograms per cubic metre (μg/m3)

This dataset relates to the "Total suspended particulate concentration in Auckland" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52431
Data type Table
Row count 588
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed
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