Natural sources of particulate matter, 2000–16

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4786
15
Added
16 Oct 2018

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

Particulate matter (PM) is made up of solid and liquid particles in the air. It is grouped according to its size – PM10 is less than 10 micrometres (µm) in diameter; PM2.5 is less than 2.5 µm in diameter. Health effects from exposure to PM include lung and cardiac disease, and premature death.
Natural sources of PM include sea salt, dust (airborne soil, also called crustal material), secondary sulphate, pollen, black carbon from wild fires, and volcanic ash. There is little evidence that sea salt particles themselves are harmful (World Health Organization (WHO), 2013) although whether sea salt that has interacted with urban air pollutants is harmful is not known. PM can also be produced by human activities, such as dust from construction or unsealed roads, but this is not considered natural because it comes from human activity.
Natural sources of PM are important because although they cannot be managed they still contribute to ambient concentrations, which are subject to the National Environmental Standards for Air Quality (NESAQ). Exceedances of the NESAQ occur when the 24-hour average PM10 concentration exceeds 50 micrograms per cubic metre (µg/m3). There is no NESAQ for PM2.5 exposure, so we report on exceedances of the WHO 24-hour average PM2.5 concentration guideline (25 µg/m3).
We report on data from nine sites from 2005–16 and report only on sea salt for natural PM because other sources of natural PM, such as dust and sulphate, can be generated by humans as well. We were not able to separate the natural from human-generated contributions. Analysis of particle size, composition, and sources in New Zealand shows that sea salt made the largest contribution to natural PM.
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 98425
Data type Table
Row count 13484
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Carbon monoxide concentrations, 1996–17

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Creative Commons Attribution 4.0 International

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5702
41
Added
15 Oct 2018

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

Carbon monoxide (CO) is a gas formed by the incomplete combustion of fuels, particularly from motor vehicles, from burning wood and coal, and using unflued gas heaters for home heating. It also occurs naturally; for example, from wild fires.
Carbon monoxide can affect human health by interfering with the blood’s ability to carry oxygen and by aggravating heart conditions. It has a relatively long life in the atmosphere – about three months. This is due to the slow rate at which carbon monoxide oxidises, forming carbon dioxide (a greenhouse gas). Carbon monoxide also has an important role in forming smog.
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 98415
Data type Table
Row count 2922098
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Black carbon concentrations, 2002–17

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Creative Commons Attribution 4.0 International

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4516
12
Added
15 Oct 2018

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

Black carbon is a particle, often in the PM2.5 or ultra-fine size range, which is emitted from combustion sources and is commonly known as soot. In New Zealand most black carbon is emitted from vehicles (especially diesel vehicles), burning wood and coal for home heating, and outdoor burning. Both long and short-term exposure to black carbon is linked to serious health effects, such as respiratory and cardiovascular disease, cancer, and premature death (World Health Organization (WHO), 2013).
Black carbon warms the climate globally and regionally because it is efficient at absorbing energy from sunlight. Black carbon also increases ice and snow melt when deposited on these surfaces, darkening them and lowering albedo (proportion of light that is reflected) so they absorb more solar energy (Ramanathan & Carmichael, 2008).
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 98417
Data type Table
Row count 19077
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Total suspended particulate matter concentrations at Penrose, Auckland, 1965–16

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Creative Commons Attribution 4.0 International

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4475
3
Added
16 Oct 2018

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

Total suspended particulate matter (TSP) consists of solid and liquid airborne particles that are smaller than 100 micrometres in diameter. Although, by weight, it is dominated by the larger particles it does also include the PM10 and PM2.5 sub-fractions that are responsible for most health effects, such as respiratory and cardiovascular disease, and some cancers. TSP can be emitted from earthworks, construction and roadworks, and the combustion of fuels such as wood and coal (eg, from home heating and industry), and petrol and diesel (from vehicles).
Natural TSP sources include sea salt, dust, pollen, smoke (from bush fires), and volcanic ash.
TSP consists of airborne particles up to 100 micrometres (μm) in diameter (PM100). TSP is small enough to be inhaled; however, larger particles (10–100μm) are filtered out in the nasal cavity and are often relatively harmless.
TSP can be emitted from earthworks, construction, and roadworks, and from combustion of fuels, such as wood and coal (eg, 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 in the atmosphere between gases or between gases and other particles.
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 98422
Data type Table
Row count 2658
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed
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