The effects on low-level cloud microstructures of varying aerosol regimes in the Arctic are examined using ground-based measurements obtained near Barrow, Alaska. Episodic 'arctic haze' events produced high cloud droplet concentrations, and small cloud droplet effective radii. By contrast, the fresh nucleation of aerosols within the Arctic produced particles high in number concentration but generally too small to be efficient cloud condensation nuclei. Comparisons with similar analyses done at lower latitudes suggest that the 'indirect effect' of haze aerosol on low-cloud effective radii is particularly high in the Arctic.
- 0305 Atmospheric composition and structure: Aerosols and particle (3045, 4801)
- 0320 Atmospheric composition and structure: Cloud physics chemistry
- 0343 Atmospheric composition and structure: Planetary atmospheres (0505, 5407, 5409, 5704, 5705, 5707)
- 0368 Atmospheric composition and structure: Troposphere-constituent transport and chemistry
- 3349 Meteorology and atmospheric dynamics: Polar meteorology
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)