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18 August 1998 Accuracy estimation of the SAGE-III retrieval algorithm for nitrogen dioxide, aerosol, and ozone
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Abstract
The procedure of nitrogen dioxide, aerosol and ozone vertical profile's inversion for the SAGE III transmission data in the spectral regions 430-450 nm, 560-616 nm and 290 nm is proposed. SAGE III instrument will measure slant path transmission function in range 430-450 nm at 20 spectral channels with 1 nm width, in range 560-616 nm at 5 spectral channels with 14 nm width. Nitrogen dioxide absorption has a quasi periodic structure in the first region that permits to separate a small extinction of this gas from a significant background of aerosol and Rayleigh extinction. For the separation of the total extinction into the compounds have been used retrieval algorithm both for each optical range individually and for all 26 wavelength conjointly. Second way use all information and lead to increase the retrieved profiles accuracy. For SAGE III data simulation, the forward calculation of the atmospheric transmission at 26 spectral channels for the tangent heights form 0 up to 80 km with 1 km step has been done. Transmission function in the calculations includes spherical refractive geometry, Rayleigh and aerosol scattering, and molecular absorption of the O3 and NO2 gases.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Eleonora A. Chayanova and Yury A. Borisov "Accuracy estimation of the SAGE-III retrieval algorithm for nitrogen dioxide, aerosol, and ozone", Proc. SPIE 3501, Optical Remote Sensing of the Atmosphere and Clouds, (18 August 1998); https://doi.org/10.1117/12.317763
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