Results of the investigations of aerosol characteristics over the caspian sea during the 29th cruise of the research vessel Rift

The results are presented of the investigations of the characteristics of near-water aerosol during the 29th cruise of the research vessel Rift in the fall of 2008 along the Astrakhan-Derbent-Aktau route. The following parameters were determined: the aerosol optical depth (AOD in the wavelength range of 0.30–2.14 µm) and the columnar water vapor of the atmosphere; the number concentration of particles N a (cm−3) and the aerosol particle size distribution in the diameter range of 0.4–10 µm; the mass concentration of submicron aerosol M a (µg m−3) and the mass concentration of black carbon (soot) M c (µg m−3); and the ion composition of the soluble aerosol fraction and gas admixtures Na+, K+, Ca2+, Mg2+, NH 4 + , Cl−, NO 3 − , HCO 3 − , SO 4 2− , SO2, NO2, HNO3, and NH3.