Validation of SCIAMACHY tropospheric NO2-columns with AMAXDOAS measurements K.-P. Heue1, A. Richter2, M. Bruns2, J. P. Burrows2, C. v. Friedeburg1, U. Platt1, I. Pundt1, P. Wang2, and T. Wagner1 1Institut für Umweltphysik, Universität Heidelberg, INF 229, 69120 Heidelberg, Germany 2Institute of Environmental Physics, University of Bremen, P.O. 330440, 28334 Bremen, Germany
Abstract. Tropospheric NO2 vertical and slant columns from the new satellite
instrument SCIAMACHY on ENVISAT are validated by measurements of the
Airborne Multi AXis DOAS (AMAXDOAS)
instrument on board the DLR Falcon. The results presented here were obtained
in February 2003 on a flight over the Alps, the Po-Valley and the
Mediterranean. The tropospheric vertical column measured by AMAXDOAS varied
between 16.2 and 35.2*1015molec/cm2 over the Po-Valley where
SCIAMACHY data resulted in 19.9 to 37*1015molec/cm2. Over less
polluted areas a similarly good agreement was found. The linear correlation
between the two datasets results in a slope of 0.93. The slight differences
observed can be attributed to the different spatial resolution and the
temporal mismatch between the measurements over the Po-Valley.
Citation: Heue, K.-P., Richter, A., Bruns, M., Burrows, J. P., v. Friedeburg, C., Platt, U., Pundt, I., Wang, P., and Wagner, T.: Validation of SCIAMACHY tropospheric NO2-columns with AMAXDOAS measurements, Atmos. Chem. Phys., 5, 1039-1051, doi:10.5194/acp-5-1039-2005, 2005.