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Published on: June 9, 2016
Particle resupply in the lower atmosphere
Hugh Coe1,2
1Manchester Environmental Research Institute, Department of Earth and Environmental Science, University of Manchester, Manchester M13 9PL, UK.
New atmospheric particles are created when the stratosphere descends into the troposphere. This stratospheric intrusion is a key process for new particle formation in the atmosphere.
Area of Science:
- Atmospheric Chemistry
- Geophysics
Background:
- Atmospheric particles influence climate and air quality.
- Understanding particle formation is crucial for atmospheric modeling.
Purpose of the Study:
- To investigate the role of stratospheric intrusions in new atmospheric particle formation.
- To elucidate the mechanisms driving particle genesis during these events.
Main Methods:
- Analysis of atmospheric composition data.
- Utilizing meteorological models to track stratospheric-tropospheric exchange.
Main Results:
- Confirmed that stratospheric air masses entering the troposphere facilitate new particle formation.
- Identified specific chemical precursors and conditions present during these intrusions.
Conclusions:
- Stratospheric intrusions are a significant source of new atmospheric particles.
- This finding impacts our understanding of atmospheric aerosol loading and its climate effects.
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