Glossary of Terms

• 1,3-Butadiene (C4H6)
• Acid Deposition
• Acid Rain
• Air Pollution Bandings
• Air Pollution Bulletins
• Air Pollution Index
• Air Pollution Information Service
• Air Quality Management Area (AQMA)
• Air Quality Objectives
• Air Quality Standards
• Air Quality Strategy
• Ambient Air
• Annual Mean
• Automatic Monitoring
• BAM (Beta Attenuation Mass Monitor)
• Benzene (C6H6)
• Black Smoke
• Carbon Monoxide (CO)
• COMEAP
• Data Capture
• Days with Exceedences
• Diffusion Tube Samplers
• Dispersion model
• EMEP (Co-operative Programme for Monitoring and Evaluation of the Long-Range Transmission ofAir pollutants in Europe)
• Emission Factor
• Emission Inventories
• EPAQS

• EU Directives
• Exceedence
• Global Warming
• Gravimetric Equivalent PM10 Data
• Greenhouse Gases
• Hydrocarbons
• Local Air Quality Action Plan
• Local Air Quality Management (LAQM)
• Maximum hourly average
• Microgrammes per cubic metre (µg/m³)
• National Atmospheric Emissions Inventory (NAEI).
• National Statistics

Emissions and concentration statistics shown in the air quality database are National Statistics. National Statistics are produced to high professional standards set out in the National Statistics Code of Practice. They undergo regular quality assurance reviews to ensure that they meet customer needs. They are produced free from any political interference.

• Oxides of Nitrogen (NOx)
• Ozone (O3)
• PAHs
• Particulate matter (PM10)
• Percentile
• POPS
• ppb
• ppm
• Running mean
• Sulphur Dioxide (SO2)
• TEOM
• TOMPS
• Trajectory Model
• Volatile organic compounds (VOCs)
• Zones and Agglomerations