Meteorological Impacts on Air Quality Dynamics
Summary
Climate and weather govern pollutant dispersion, chemical transformation and deposition. Variation in boundary-layer height, atmospheric stability and synoptic-scale pressure patterns modulates the accumulation and transport of fine particulate matter and gaseous precursors. Episodes of severe haze and ozone exceedance often coincide with stagnant high‐pressure systems, surface inversions and weak winds, while cold fronts, precipitation and enhanced turbulence promote dilution and wet deposition. Meteorological drivers also influence secondary aerosol formation via temperature, humidity and solar radiation, affecting nucleation, condensation and heterogeneous reactions. Transboundary transport under prevailing wind regimes can carry pollutants hundreds of kilometres, with anthropogenic warming altering regional circulation and exacerbating long-range pollution. Feedbacks between aerosols and meteorology—such as aerosol-induced cooling that strengthens inversions—further amplify pollution episodes. A refined understanding of these interactions underpins accurate air-quality forecasting and climate-resilient emission control strategies worldwide.
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Meteorological Impacts on Air Quality Dynamics publication trend
The graph below shows the total number of articles in meteorological impacts on air quality dynamics across all publications each year (not limited to Nature Index journals).
Technical terms
Boundary-layer height: The depth of the lowest atmospheric layer affected by surface friction and heating, governing pollutant mixing and dilution.
Atmospheric stability: The resistance of the atmosphere to vertical motion, with stable conditions inhibiting dispersion and unstable conditions promoting turbulence.
Inversion layer: A temperature profile in which a warmer air layer sits above cooler surface air, trapping pollutants aloft and preventing vertical mixing.
Secondary aerosols: Particulate matter generated in the atmosphere through chemical reactions of gaseous precursors rather than direct emissions.
Transboundary transport: The movement of air pollutants across regional or national borders driven by prevailing wind patterns.
Hygroscopic growth: The process by which aerosol particles absorb water vapour, increasing in size and influencing optical properties and removal rates.
References
- Anthropogenic warming degrades spring air quality in Northeast Asia by enhancing atmospheric stability and transboundary transport. npj Climate and Atmospheric Science (2024).
- Downdraft influences on the differences of PM2.5 concentration: insights from a mega haze evolution in the winter of northern China. Environmental Research Letters (2023).
- Influence of meteorological conditions on PM2.5 concentrations across China: A review of methodology and mechanism. Environment International (2020).
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