Concentration and composition of aerosols over the North Atlantic in August 1995@en

Data on composition of aerosols are considered. Investigations include electron microscopy, grain size, mineralogical and chemical analyses. Samples of aerosols were collected Cruise 37 of R/V Akademik Mstislav Keldysh along a transatlantic section along 40°-50°N. Variability of concentrations and composition of aerosols with distance from continents is shown: concentrations of aerosols decrease by factor of ten and more. Significant portion of mineral components in aerosols collected over the continent is replaced by organic matter due to mechanical differentiation during transportation. Such anthropogenic components as soot, ash, and combustion spheres were detected in all samples. North African dust was found in one sample in the western part of the section.

本数据集收录气溶胶组成相关观测数据，研究采用的分析方法涵盖电子显微镜观测、粒度分析、矿物学及化学组分测试。气溶胶样品由“姆斯季斯拉夫·凯尔迪什院士号”（R/V Akademik Mstislav Keldysh）考察船在第37航次期间，沿北纬40°至50°的跨大西洋断面采集获取。研究揭示了气溶胶浓度与组成随距大陆距离变化的分布规律：气溶胶浓度可降低一个数量级及以上。近大陆海域采集的气溶胶中，占比可观的矿物组分在输送过程中因机械分异作用被有机质取代。所有样品中均检出炭黑（soot）、灰烬及燃烧球粒等人为源组分。在该断面西部的一处样品中检出北非沙尘。