Health & Environmental Research Online (HERO)


Print Feedback Export to File
3242952 
Book/Book Chapter 
Spectral radiance modelling in the UV-visible range 
Stammes, P 
2001 
STUDIES IN GEOPHYSICAL OPTICS AND REMOTE SENSING 
385-388 
WOS:000176920100100 
Accurate calculations of ultraviolet and visible spectra of the Earth become increasingly important with the advent of modern satellite spectrometers, such as GOME on ERS-2, SCIAMACHY on Envisat, OMI on EOS-Aura, and GOME-2 on the METOP-series. Here results of our polarised radiative transfer model DAK in the range 255-500 nm are compared to those of MODTRAN4 and 3.7 for a clear sky case with low surface albedo. Nadir view is assumed, and the solar zenith angle is between 30 and 75degrees. Neglecting polarisation (scalar calculations), the radiance difference between DAK and MODTRAN is up to 5 %, with a steep variation around 290 nm. DAK calculations with and without polarisation show that due to neglecting polarisation in MODTRAN, an additional radiance error of, in this case, up to 9 % (at 330 nm) occurs. Comparison between DAK calculations and GOME measurements shows calibration errors in GOME and atmospheric effects not included in DAK.