luchtemissies

Luchtemissies, or air emissions, are pollutants released into the atmosphere from natural processes and human activities. They include gases and particles that can affect climate, air quality, and health, such as carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), sulfur dioxide (SO2), nitrogen oxides (NOx), volatile organic compounds (VOCs), ammonia, and particulate matter (PM2.5 and PM10).

Sources vary and include point sources such as smokestacks and diffuse sources such as road traffic, agriculture, and residential energy use. Major sectors are energy production, transportation, industry, agriculture, and waste management. While some emissions are natural, human activity substantially increases them and can alter natural emission rates.

Emissions are quantified in units of mass per time and often expressed as CO2-equivalents to compare the climate impact of different gases. Methods combine direct measurement, emission factors, and activity data, and are compiled in national inventories and international reporting frameworks. In many regions, emissions are regulated through standards, reporting requirements, and market mechanisms such as cap-and-trade systems.

Mitigation options include energy efficiency, switching to cleaner fuels or electricity, renewable energy, and process changes; abatement technologies such as scrubbers, filters, catalytic converters, and methane capture; and improvements in agricultural and waste-management practices. Effective policies typically pair emission limits with monitoring, transparent reporting, and incentives to reduce emissions, yielding climate and health co-benefits.