Light scattering and absorption properties of aerosol particles in Hong Kong

The light scattering and absorption coefficients of aerosol particles at lo w relative humidity had been measured continuously at Cape D'Aguilar, a rem ote area at the south-eastern tip of Hong Kong, from September 1997 to Apri l 1999. Higher reading was recorded in winter (November-February) than in s ummer (May-August). The second winter (November 1998-February 1999) registe red higher reading than the first winter (November 1997-February 1998). For ty-four episodes were identified when sudden increase in scattering coeffic ients or absorption coefficients lasted for two or more consecutive hours a nd exceeded three standard deviations of the monthly mean. (C) 2001 Elsevie r Science Ltd. All rights reserved.