NDLI: Spatiotemporal variations in aerosol characteristics along the route of the Indian-Atlantic expedition onboard the research vessel Akademik Nikolaj Strakhov

Content Provider	Springer Nature Link
Author	Sakerin, S. M. Golobokova, L. P. Kabanov, D. M. Pol’kin, V. V. Turchinovich, Yu. S. Khodzher, T. V. Khuriganova, O. I.
Copyright Year	2017
Abstract	We discuss the results of studying the physical-chemical composition of the atmospheric aerosol during expedition onboard the RV Akademik Nikolaj Strakhov carried out during winter of 2015–2016 on the route from Colombo to Kaliningrad (via Suez Canal). As compared to the Mediterranean Sea and Atlantic (near Europe), the atmosphere of the Arabian and Red Seas was characterized by higher values of most aerosol characteristics: 3–5 times larger aerosol optical depth (AOD), 4 times larger aerosol number concentration, 1.5 times larger concentrations of continent- and sea-derived ions, as well as more abundant gas admixtures (SO$_{2}$, HCl, HNO$_{3}$, NH$_{3}$). At the same time, two seas of the Indian basin substantially differ in aerosol composition, primarily due to outflows of aerosols of different types from the continents. The largest concentrations of black carbon (2.14 μg m$^{–3}$, on average), sea-derived ions (Na$^{+}$, Cl$^{–}$, Mg$^{2+}$), and NH$_{3}$ are observed over the Arabian Sea; larger values of the fine component of the AOD and concentrations of “continental” ions (SO$_{4}$ $^{2-}$, Ca$^{2+}$, NO$_{3}$ $^{-}$, NH$_{4}$ $^{+}$) and gas admixtures SO$_{2}$, HCl, HNO$_{3}$ are found over the Red Sea. With respect to ion composition of aerosol, most stable concentrations are noted for Ca$^{2+}$ ions (less than 15% difference among the seas), and maximal spatial variations are found for NH 4 + ions (the difference of up to a factor of 40).
Starting Page	349
Ending Page	359
Page Count	11
File Format	PDF
ISSN	10248560
Journal	Atmospheric and Oceanic Optics
Volume Number	30
Issue Number	4
e-ISSN	20700393
Language	English
Publisher	Pleiades Publishing
Publisher Date	2017-08-24
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	aerosol optical depth aerosol and black carbon concentrations chemical composition Indian and Atlantic Oceans Optics, Lasers, Photonics, Optical Devices
Content Type	Text
Resource Type	Article
Subject	Oceanography Earth-Surface Processes Ecological Modeling Pollution Atmospheric Science Instrumentation Atomic and Molecular Physics, and Optics

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