通过PY30-1平台上安装的CE318型自动太阳光度计，利用2011年9月至2012年10月长期观测的数据，分析了南海海域大气气溶胶的光学特性。海上气溶胶光学参数主要包括光学厚度、Angstrom波长指数、复折射指数、单次散射反照率以及散射相函数。开展海上大气气溶胶光学等特性的观测与研究是进行水色卫星定标与检验的关键。结果表明，海上气溶胶基本符合沿海气溶胶模式特征。对海上气溶胶光学特性的了解，可为深入水色卫星的定标与检验提供重要依据。

By obtaining data of the CE318 automatic sunphotometer installed on the PY30-1 platform from September 2011 to October 2012, the aerosol optical characteristics in South China Sea is studied. The main aerosol optical parameters are aerosol optical thickness, Angstrom exponent, complex refractive exponent, single scattering albedo and scattering phase function. Carrying out research of the aerosol optical characteristics in South China Sea, is an important part of calibration and validation of satellites. The results show that the aerosol optical parameters are similar with the coastal mode, and can be used for calibration and validation of satellites.