Articles | Volume 10, issue 5
Atmos. Chem. Phys., 10, 2079–2089, 2010

Special issue: Program of Regional Integrated Experiments on Air Quality...

Atmos. Chem. Phys., 10, 2079–2089, 2010

  01 Mar 2010

01 Mar 2010

MAX-DOAS measurements in southern China: retrieval of aerosol extinctions and validation using ground-based in-situ data

X. Li1,2, T. Brauers2, M. Shao1, R. M. Garland3, T. Wagner4, T. Deutschmann5, and A. Wahner2 X. Li et al.
  • 1College of Environmental Sciences and Engineering, Peking University, Beijing, China
  • 2Institute for Chemistry and Dynamics of the Geosphere (ICG-2), Forschungszentrum Jülich, Germany
  • 3Biogeochemistry Department, Max Planck Institute for Chemistry, Mainz, Germany
  • 4Satellite Group, Max Planck Institute for Chemistry, Mainz, Germany
  • 5Institute for Environmental Physics, Universität Heidelberg, Heidelberg, Germany

Abstract. We performed MAX-DOAS measurements during the PRiDe-PRD2006 campaign in the Pearl River Delta region 50 km north of Guangzhou, China, for 4 weeks in June 2006. We used an instrument sampling at 7 different elevation angles between 3° and 90°. During 9 cloud-free days, differential slant column densities (DSCDs) of O4 (O2 dimer) absorptions between 351 nm and 389 nm were evaluated for 6 elevation angles. Here, we show that radiative transfer modeling of the DSCDS can be used to retrieve the aerosol extinction and the height of the boundary layer. A comparison of the aerosol extinction with simultaneously recorded, ground based nephelometer data shows excellent agreement.

Final-revised paper