MAX-DOAS measurements in southern China: retrieval of aerosol extinctions and validation using ground-based in-situ data 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
Received: 25 Jul 2008 – Published in Atmos. Chem. Phys. Discuss.: 29 Sep 2008 – Published: 01 Mar 2010Abstract. 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.
Citation: Li, X., Brauers, T., Shao, M., Garland, R. M., Wagner, T., Deutschmann, T., and Wahner, A.: MAX-DOAS measurements in southern China: retrieval of aerosol extinctions and validation using ground-based in-situ data, Atmos. Chem. Phys., 10, 2079-2089, doi:10.5194/acp-10-2079-2010, 2010.