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| Heavy fog's climate characteristics and possible effcet of aerosol in Jiangsu Province |
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Abstract Heavy fog days, duration hours, temporal and spatial distribution and the causes of Jiangsu heavy fog in recent 50 years were analyzed to explore aerosol effect mechanism on heavy fog formation. The result show that heavy fog might occur at any time, but the most frequent time was early morning and autumn. The changing rule could be explained by seasonal circulation background characteristics of the area and the fog formation mechanism. The days of heave fog changes annually showed parabolic distribution (up then down) in recent 50 years, and the duration hours of heavy fog shows a volatility rising tendency. Meteorological factors could not explain all the variation characteristics. Aerosol might have important effects on the formation and duration of heavy fog. The combined effects of meteorology factors and aerosol could explain the changing characteristics of heavy fog days and duration hours.
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Received: 31 December 2013
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