Particulate matter (PM)

Particulate matter (PM)

Very small pieces of solid or liquid matter such as particles of soot, dust, fumes, mists or aerosols. The physical characteristics of particles, and how they combine with other particles, are part of the feedback mechanisms of the atmosphere.

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Part of Speech: noun
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Blossary:
Industry/Domain: Natural environment
Category: Climate change
Government Agency: U.S. EPA
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Related terms

particulate matter (PM)

Pollution control; Air pollution

Any material, except pure water, that exists in the solid or liquid state in the atmosphere. The size of particulate matter can vary from coarse, wind-blown dust particles to fine ...

particulate matter (PM)

Energy; General

Unburned fuel particles that form smoke or soot and stick to lung tissue when inhaled. A chief component of exhaust emissions from heavy-duty diesel engines.

particulate matter (PM)

Energy; Bioenergy

Fine particles of solids suspended in gas. Anthropogenic sources of aerosols originate from the burning of fossil fuels or from wind-blown dust from construction and agricultural ...

particulate matter (PM)

Natural environment; Climate change

Very small pieces of solid or liquid matter such as particles of soot, dust, fumes, mists or aerosols. The physical characteristics of particles, and how they combine with other ...

Annex I countries

Natural environment; Climate change

The industrialised countries (and countries in transition to a market economy) which took on obligations to reduce their greenhouse gas emissions under the Kyoto Protocol. Their ...

Annex II

Natural environment; Climate change

Countries which have a special obligation under the Kyoto Protocol to provide financial resources and transfer technology to developing countries. This group is a sub-section of ...

Aosis

Natural environment; Climate change

The Alliance of Small Island States comprises 42 island and coastal states mostly in the Pacific and Caribbean. Members of Aosis are some of the countries likely to be hit hardest ...

The Fourth Assessment Report (AR4)

Natural environment; Climate change

The Fourth Assessment Report produced by the Intergovernmental Panel on Climate Change (IPCC) published in 2007. The report assessed and summarised the climate change situation ...

Bali action plan

Natural environment; Climate change

A plan drawn up at the UN Climate Change Conference in Bali, in December 2007, forming part of the Bali roadmap. The action plan established a working group to define a long-term ...

Bali roadmap

Natural environment; Climate change

A plan drawn up at the UN Climate Change Conference in Bali, in December 2007, to pave the way for an agreement at Copenhagen in 2009 on further efforts to reduce greenhouse gas ...

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