Atmospheric aerosol properties by Kirill Ya. Kondratyev, Lev S. Ivlev, Vladimir F. Krapivin,

By Kirill Ya. Kondratyev, Lev S. Ivlev, Vladimir F. Krapivin, Costas A. Varostos

This e-book presents the 1st finished research of ways aerosols shape within the surroundings via in situ methods in addition to through shipping from the outside (dust storms, seas spray, biogenic emissions, woodland fires etc.). Such an research has been by way of the distinction of either commentary info (various box observational experiments) and numerical modelling effects to evaluate weather affects of aerosols making an allowance for that those affects are the main major uncertainty in learning common and anthropogenic factors of weather swap.

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To illustrate the peculiarities of the atmospheric radiative regime in di€erent geographic regions, note, in particular, that observations during the GATE were often carried out under conditions of dust outbreaks from the Sahara, but the near-water-surface layer (up to 1 km in altitude) remained practically always free of aerosol particles. Thus, if under desert conditions a maximum of radiation ¯ux divergence was observed in the atmospheric boundary layer, over the tropical Atlantic this maximum was observed in the layer located at a considerable altitude over the ocean.

Measurements of radiation ¯uxes, and microphysical and other parameters of clouds were made over the Black Sea. At the ®rst stage, the dependence of spectral albedo for di€erent clouds on their optical and microphysical characteristics was studied as well as special features of the spectral distribution of radiation ¯ux divergence in the presence of overcast cloudiness. As has been mentioned above, such studies can serve as the basis for experimental tests of theoretical schemes taking into account the radiative factors and working out techniques for their parameterization in the numerical simulation of atmospheric general circulation and climate theory.

At the same heights, air sampling was carried out and sketches of the aerosol cloud were drawn. Aircraft radiation measurements. Actinometric air-borne measurements enabled one to obtain data on the vertical pro®les of radiation ¯uxes, albedo, and radiative ¯ux divergence and its constituents in the free troposphere. 3±3 mm) radiation at di€erent levels in the 12 Programmes of atmospheric aerosol experiments: The history of studies [Ch. 1 atmosphere: 200, 500, 1,000, 2,000, 4,000, and 7,200 m. The aircraft was at the `platform' for 12±15 minutes.

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