Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2011, Vol. 8, No. 3, pp. 263-268
On retrieval of nitrogen dioxide profile in Earth atmosphere from zenith scattering sunlight observations during twilight
V.A. Ivanov
, A.S. Elokhov
, O.V. Postylyakov
A.M. Obukhov Institute of Atmospheric Physics, Moscow Russian Academy of Sciences, 119017, Moscow, Pyjevskiy per. 3
Since 1990 spectral observations of the zenith scattering sunlight radiation are carried out at Zvenigorod Scientific Station of IAPh RAS. The observations are performed with MDR-23 spectrometer at twilight when solar zenith angle run from 84° to 96°. The paper presents the first results of development of a new method of NO2 profile retrieval using these observations. The method has accurate mathematical approach to a priori information using, errors analysis and the estimation of measurement quality. The error of the stratosphere NO2 content retrieval is approximately 10%. The error for the atmospheric boundary layer depends on the NO2 content in the layer and is between 1 1015 and 31015 mol/cm2. A comparison of the stratospheric NO2 columns obtained by the new and the standard IAPh methods showed that data were generally good agreed.
Keywords: nitrogen dioxide, zenith scattering observations, profile, vertical distribution, stratosphere
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