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Effects of varying aerosol regimes on low‐level Arctic stratus
Author(s) -
Garrett T. J.,
Zhao C.,
Dong X.,
Mace G. G.,
Hobbs P. V.
Publication year - 2004
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2004gl019928
Subject(s) - aerosol , haze , cloud condensation nuclei , arctic , atmospheric sciences , environmental science , nucleation , the arctic , effective radius , condensation , climatology , meteorology , physics , geology , oceanography , astrophysics , thermodynamics , galaxy
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.