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Spatial Distribution of Black Carbon Concentrations in the Atmosphere of the North Atlantic and the European Sector of the Arctic Ocean
Atmosphere ( IF 2.9 ) Pub Date : 2021-07-23 , DOI: 10.3390/atmos12080949 Sergey M. Sakerin , Dmitry M. Kabanov , Vladimir M. Kopeikin , Ivan A. Kruglinsky , Alexander N. Novigatsky , Viktor V. Pol’kin , Vladimir P. Shevchenko , Yuri S. Turchinovich
Atmosphere ( IF 2.9 ) Pub Date : 2021-07-23 , DOI: 10.3390/atmos12080949 Sergey M. Sakerin , Dmitry M. Kabanov , Vladimir M. Kopeikin , Ivan A. Kruglinsky , Alexander N. Novigatsky , Viktor V. Pol’kin , Vladimir P. Shevchenko , Yuri S. Turchinovich
We discuss the measurements of black carbon concentrations in the composition of atmospheric aerosol over the seas of the North Atlantic and European sector of the Arctic Ocean (21 expeditions in 2007–2020). The black carbon concentrations were measured by an aethalometer and filter method. The comparison of the two variants of the measurements of the black carbon concentrations showed that the data acceptably agreed and can be used jointly. It is noted that the spatial distribution of black carbon over the ocean is formed under the influence of outflows of air masses from the direction of continents, where the main sources of emission of absorbing aerosol are concentrated. We analyzed the statistical characteristics of black carbon concentrations in five marine regions, differing by the outflows of continental aerosol. The largest black carbon content is a salient feature of the atmosphere of the North and Baltic Seas, surrounded by land: average values of concentrations are 210 ng/m3, and modal values are 75 ng/m3. In other regions (except in the south of the Barents Sea), the average black carbon concentrations are 37–44 ng/m3 (modal concentrations are 18–26 ng/m3). We discuss the specific features of the spatial (latitude-longitude) distributions of black carbon concentrations, relying on ship-based measurements and model calculations (MERRA-2 reanalysis data). A common regularity of the experimental and model spatial distributions of black carbon is that the concentrations decrease in the northern direction and with the growing distance from the continent: from several hundred ng/m3 in the southern part of the North Sea to values below 50 ng/m3 in polar regions of the ocean.
中文翻译:
北大西洋和北冰洋欧洲区大气中黑碳浓度的空间分布
我们讨论了对北大西洋海域和北冰洋欧洲部分大气气溶胶成分中黑碳浓度的测量(2007-2020 年的 21 次探险)。黑碳浓度通过风量计和过滤法测量。黑碳浓度测量的两种变体的比较表明数据可以接受并且可以联合使用。值得注意的是,黑碳在海洋上空的空间分布是在气团从大陆方向流出的影响下形成的,吸收气溶胶的主要排放源集中在这里。我们分析了五个海洋区域的黑碳浓度的统计特征,这些区域因大陆气溶胶的流出而异。3,模态值为75 ng/m 3。在其他地区(巴伦支海南部除外),平均黑碳浓度为 37-44 ng/m 3(模态浓度为 18-26 ng/m 3)。我们根据船舶测量和模型计算(MERRA-2 再分析数据)讨论了黑碳浓度空间(经纬度)分布的具体特征。黑碳的实验和模型空间分布的一个共同规律是浓度向北方向和与大陆距离的增加而降低:从北海南部的数百 ng/m 3到低于 50纳克/米3 在海洋的极地地区。
更新日期:2021-07-23
中文翻译:
北大西洋和北冰洋欧洲区大气中黑碳浓度的空间分布
我们讨论了对北大西洋海域和北冰洋欧洲部分大气气溶胶成分中黑碳浓度的测量(2007-2020 年的 21 次探险)。黑碳浓度通过风量计和过滤法测量。黑碳浓度测量的两种变体的比较表明数据可以接受并且可以联合使用。值得注意的是,黑碳在海洋上空的空间分布是在气团从大陆方向流出的影响下形成的,吸收气溶胶的主要排放源集中在这里。我们分析了五个海洋区域的黑碳浓度的统计特征,这些区域因大陆气溶胶的流出而异。3,模态值为75 ng/m 3。在其他地区(巴伦支海南部除外),平均黑碳浓度为 37-44 ng/m 3(模态浓度为 18-26 ng/m 3)。我们根据船舶测量和模型计算(MERRA-2 再分析数据)讨论了黑碳浓度空间(经纬度)分布的具体特征。黑碳的实验和模型空间分布的一个共同规律是浓度向北方向和与大陆距离的增加而降低:从北海南部的数百 ng/m 3到低于 50纳克/米3 在海洋的极地地区。