Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2015

Идентификатор DOI: 10.5194/acp-15-12413-2015

Ключевые слова: aerosol property, black carbon, boundary layer, chemical composition, optical depth, physicochemical property, spatial distribution, Arctic Ocean, Atlantic Ocean, North Sea, Pacific Ocean, Sea of Japan

Аннотация: We presented the results of expedition measurements of the set of physical-chemical characteristics of atmospheric aerosol in areas of the Arctic and Far East seas, performed onboard RV Akademik Fedorov (17 August- 22 September 2013) and RV Professor Khljustin (24 July- 7 September 2013). The specific features of spatial distribution and time variations of aerosol optical depth (AOD) of the atmosphere in the wavelength range of 0.34-2.14 ?m and boundary layer height, aerosol and black carbon mass concentrations, and disperse and chemical composition of aerosol are discussed. Over the Arctic Ocean (on the route of RV Akademik Fedorov) there is a decrease in aerosol and black carbon concentrations in a northeastern direction: higher values were observed in the region of Spitsbergen and near the Kola Peninsula; and minimum values were observed at northern margins of the Laptev Sea. Average AOD (0.5 ?m) values in this remote region were 0.03; the aerosol and black carbon mass concentrations were 875 and 22 ngm-3, respectively. The spatial distributions of most aerosol characteristics over Far East seas show their latitudinal decrease in the northern direction. On transit of RV Professor Khljustin from the Japan Sea to the Chukchi Sea, the aerosol number concentration decreased on average from 23.7 to 2.5 cm-3, the black carbon mass concentration decreased from 150 to 50 ngm-3, and AOD decreased from 0.19 to 0.03. We analyzed the variations in the boundary layer height, measured by ship-based lidar: the average value was 520 m, and the maximal value was 1200 m. In latitudinal distribution of the boundary layer height, there is a characteristic minimum at a latitude of ~55° N. For water basins of eight seas, we present the chemical compositions of the water-soluble aerosol fraction (ions, elements) and small gasphase species, as well as estimates of their vertical fluxes. It is shown that substances are mainly (75-89 %) supplied from the atmosphere to the sea surface together with gas-phase species. The deposited ions account for from 11 to 24.5 %, and trace elements account for 0.2-0.4% of the total sum of water-soluble components. The average vertical fluxes of aerosol substance are a factor of 4-7 larger in the Japan Sea than in the water basins of Arctic seas. © Author(s) 2015.

Журнал: Atmospheric Chemistry and Physics

Выпуск журнала: Vol. 15, Is. 21

Номера страниц: 12413-12443

• Sakerin S.M. (V. E. Zuev Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, Tomsk, Russian Federation)
• Bobrikov A.A. (Admiral G. I. Nevelsky State Marine University, Vladivostok, Russian Federation)
• Bukin O.A. (Admiral G. I. Nevelsky State Marine University, Vladivostok, Russian Federation)
• Golobokova L.P. (Limnology Institute, Siberian Branch, Russian Academy of Sciences, Irkutsk, Russian Federation)
• Pol'Kin V.V. (V. E. Zuev Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, Tomsk, Russian Federation)
• Pol'Kin V.V. (V. E. Zuev Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, Tomsk, Russian Federation)
• Shmirko K.A. (Institute of Automatics and Control Processes, Far East Branch, Russian Academy of Sciences, Vladivostok, Russian Federation, Far East Federal University, Vladivostok, Russian Federation)
• Kabanov D.M. (V. E. Zuev Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, Tomsk, Russian Federation)
• Khodzher T.V. (Limnology Institute, Siberian Branch, Russian Academy of Sciences, Irkutsk, Russian Federation)
• Onischuk N.A. (Limnology Institute, Siberian Branch, Russian Academy of Sciences, Irkutsk, Russian Federation)
• Pavlov A.N. (Institute of Automatics and Control Processes, Far East Branch, Russian Academy of Sciences, Vladivostok, Russian Federation)
• Potemkin V.L. (Limnology Institute, Siberian Branch, Russian Academy of Sciences, Irkutsk, Russian Federation)
• Radionov V.F. (Arctic and Antarctic Research Institute, St-Petersburg, Russian Federation)

• Scopus