Retrieval of aerosol extinction in the lower troposphere based on UV MAX-DOAS measurements

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Abstract

Multi Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) has been utilized in recent years as a means of deriving vertical profiles of aerosol and trace gases; however, this new technique requires further validation because few studies have investigated its capability. In this study, vertical distributions of aerosol extinction coefficients (AECs) in the lower troposphere were retrieved by applying a recently developed aerosol-retrieval algorithm to O 4 slant column densities (SCDs) measured at a UV wavelength (356 nm) using the MAX-DOAS technique. The MAX-DOAS measurements were conducted at the Korea Global Atmosphere Watch Observatory (KGAWO) located off the west coast of Korea during a period of seven cloudless days in May and June 2005. The AECs measured by UV MAX-DOAS varied from 0.05 to 0.73 km -1 in the 0-1 km layer and from 0.01 to 0.20 km -1 in the 1-2 km layer. The AECs for the 1-2 km layer from UV MAX-DOAS are in agreement with lidar data within about 60%. Our results demonstrate the ability ofMAX-DOAS as a remote sensing technique for surface aerosol measurements. Copyright © American Association for Aerosol Research.

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Lee, H., Irie, H., Kim, Y. J., Noh, Y., Lee, C., Kim, Y., & Chun, K. J. (2009). Retrieval of aerosol extinction in the lower troposphere based on UV MAX-DOAS measurements. Aerosol Science and Technology, 43(5), 502–509. https://doi.org/10.1080/02786820902769691

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