Carbon Trail Glossary

Your resource for carbon accounting terminology

Particulate Matter

October 2, 2024Shantanu Singh

What is Particulate Matter?

Particulate Matter (PM) in carbon measurement deals with the assessment of particulate emissions as some percentage of an organization’s or region’s carbon footprint. Although most carbon accounting practices are limited to gases such as carbon dioxide (CO₂) and methane (CH₄), particulate matter is a key variable in evaluating externalities because of its significant consequences on air quality, human health, and the environment.

Understanding Particulate Matter in Carbon Accounting

When it comes to carbon accounting, companies are also measured by particulate matter emissions to give a complete picture of their impact. PM may be released into the atmosphere through the burning of fossil fuels or from industrial and agricultural exhausts, or be generated from precursor gases such as SO₂ and NOx in the atmosphere.

Types of Particulate Matter Considered in Carbon Accounting

  • PM10: Coarse particulate matter with a diameter of 10 micrometers or less. These particles are significant contributors to air pollution and can affect respiratory health.
  • PM2.5: Fine particulate matter with a diameter of 2.5 micrometers or less. Due to their small size, PM2.5 particles are particularly harmful, as they can penetrate deep into the lungs and enter the bloodstream.

Role of Particulate Matter in Environmental Impact

Particulate matter is not a greenhouse gas, but it plays a significant role in environmental and public health. High levels of PM can exacerbate climate change by affecting cloud formation, reducing atmospheric visibility, and contributing to the atmospheric brown cloud phenomenon. In carbon accounting, PM is often considered in conjunction with GHGs to assess the full range of pollutants emitted by a particular activity or process.

Strategies for Managing Particulate Matter in Carbon Accounting

To effectively manage particulate matter within the framework of carbon accounting, organizations and governments can implement various strategies:

  • Emission Reduction Technologies: Installing filters, scrubbers, and other technologies in industrial facilities and vehicles to capture PM before it is released into the atmosphere.
  • Sustainable Energy Practices: Transitioning to cleaner energy sources, such as renewable energy, which produce fewer particulate emissions compared to fossil fuels.
  • Regulatory Compliance: Adhering to air quality standards and regulations that limit PM emissions and incorporating these limits into carbon accounting practices.

Importance of Including Particulate Matter in Carbon Accounting

Integration of particulate matter in carbon account is useful in determining the overall approaches to managing the environment. This way, both GHGs and PM will help organizations get a clearer overall picture of what their environmental footprint is, where improvements can be made, and how more effective plans for minimizing pollution and harm to the public can be made.

FAQs about the Particulate Matter


1. Why is particulate matter included in carbon accounting?

An analysis of an organization’s impact on the environment is done by incorporating particulate matter in carbon account. Although it is not a greenhouse gas, PM plays a crucial role in air quality, health, and the environment thus it must be included as a consideration.

2. How can organizations reduce particulate matter emissions?

Measures should include clean production technology, deployment of emission control techniques, shift to cleaner energy forms and/or compliance with air quality standards.