REMOTE SENSING OF ATMOSPHERIC CONSTITUENTS AND THE MULTI-FUNCTION SPECTROPHOTOMETER

<正> A multi-functional solar and skylight spectrophotometer has been developed for the study of atmosphericconstituents and aerosols. The instrument and its performance are described. Due to telescope structure andlock-in amplification technique adopted,the sensitivity of the instrument is high enough to conduct direct sunmoon and twilight measurement for several atmospheric species and the degree of polarization and intensityobservation for sky light. From measured results, the total column abundance of atmospheric species and theoptical characteristics of aerosol can be retrieved. In this paper, the daily averaged column abundance of O3measured in Beijing by direct sun was compared with Dobson spectrophotometer nearby. The two did notshow significant difference.