Validation of SCIAMACHY tropospheric NO2-columns with AMAXDOAS measurements
K.-P. Heue1, A. Richter2, T. Wagner1, M. Bruns2, J. P. Burrows2, C. v. Friedeburg1, W. D. Lee1, U. Platt1, I. Pundt1, and P. Wang2 1Institut für Umweltphysik, Universität Heidelberg, INF 229, 69120 Heidelberg, Germany 2Institute of Environmental Physics, University of Bremen, P.O. 330440, 28334 Bremen, Germany
Abstract. Vertical and slant tropospheric NO2-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 12.8 and 27.2*1015 molec/cm2 over the Po-Valley where
SCIAMACHY data resulted in 14.4 to 27.5*1015 molec/cm2. Over less
polluted areas a similarly good agreement was found. The overall correlation
between the two datasets results in a slope of the linear fit of 0.89. The
slight differences observed might be attributed to the different spatial
resolution and the temporal mismatch between the measurements over the
Po-Valley.
Citation: Heue, K.-P., Richter, A., Wagner, T., Bruns, M., Burrows, J. P., v. Friedeburg, C., Lee, W. D., Platt, U., Pundt, I., and Wang, P.: Validation of SCIAMACHY tropospheric NO2-columns with AMAXDOAS measurements, Atmos. Chem. Phys. Discuss., 4, 7513-7540, doi:10.5194/acpd-4-7513-2004, 2004.
