Finely dispersed brown carbon in a smoggy atmosphere


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It is shown that the absorption capacity of smoke aerosol during mass forest and forest–peat fires is determined to a considerable degree by light absorbing organic compounds or brown carbon. According to the data from the AERONET global network of stations [1], the absorption spectra of smoke aerosol vary significantly if airborne particulate matter is contained in brown carbon. It is established that in several cases, the absorption spectra of smoke aerosol are approximated with satisfactory accuracy by exponents. It is shown that the finely dispersed (submicron) fraction of the smoke aerosol makes a major contribution to its optical characteristics in the 0.44–1.02 μm spectral region. Strong variation in the single scattering albedo is discovered in the presence of brown carbon in the smoke aerosol. It is shown that the optical characteristics of coarsely dispersed and finely dispersed fractions of smoke aerosol differ considerably.

作者简介

G. Gorchakov

Obukhov Institute of Atmospheric Physics

编辑信件的主要联系方式.
Email: gengor@ifaran.ru
俄罗斯联邦, Pyzhevsky per. 3, Moscow, 119017

A. Vasiliev

St. Petersburg State University

Email: gengor@ifaran.ru
俄罗斯联邦, St. Petersburg, 199034

K. Verichev

Obukhov Institute of Atmospheric Physics

Email: gengor@ifaran.ru
俄罗斯联邦, Pyzhevsky per. 3, Moscow, 119017

E. Semoutnikova

GPBU Mosecomonitoring

Email: gengor@ifaran.ru
俄罗斯联邦, Moscow, 119019

A. Karpov

Obukhov Institute of Atmospheric Physics

Email: gengor@ifaran.ru
俄罗斯联邦, Pyzhevsky per. 3, Moscow, 119017

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