渤海海域上空大气衰减光学厚度的研究

利用太阳光度计和臭氧监测仪的测量数据，对渤海海域上空8月中下旬的大气衰减进行了分析，结果发现：对大气衰减贡献最大的是气溶胶散射，约占86％；从时间和空间上看，气溶胶的浑浊度因子α和Augstrom指数β的变化都很大。在所测量的海域和时间内，α主要分布范围为2～9，β的主要分布范围为-1．4～-1．2；由于α和β日变化较大，观测气溶胶的时间尺度不应大干1天。从海域位置上讲，黄河口附近海域的气溶胶散射光学厚度比其它海域都要大。以上研究结果对于有效地获取我国近岸二类水体海域上空的大气校正所需的资料具有重要意义。

Study on atmosphere's attenuation optical thickness above Bohai Sea

Using data measured by sun-photometer and ozone monitor, the atmosphere's attenuation above Bohai Sea was analyzed in August, 2003, and some characters were shown as follows: atmosphere's attenuation was mainly influenced by aerosol scattering; both in space scale and in time scale, aerosol changed greatly, and its time scale of changing was about one day; in the sea area near the Yellow River estuary, the aerosol scattering optical thickness and ozone absorption optical thickness were larger than that in other sea areas.