The observational study of black carbon aerosol over the cruise during the Third National Arctic Research Expedition of China

TANG Jie; BIAN Lin-gen; YAN Peng; LU Chang-gui

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TANG Jie, BIAN Lin-gen, YAN Peng, LU Chang-gui. The observational study of black carbon aerosol over the cruise during the Third National Arctic Research Expedition of China[J]. Haiyang Xuebao, 2011, 33(2): 60-68.

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The observational study of black carbon aerosol over the cruise during the Third National Arctic Research Expedition of China

Chinese Academy of Meteorological Sciences, China Meterological Administration, Beijing 100081,China

Received Date: 2010-07-18

Abstract

Abstract

Aerosol black carbon concentration measured at deck level on board the R/V "Xuelong", with an in-situ aethalometer, during the cruise of the Third National Arctic Research Expedition of China from 12 July to 22 September, 2008. The cruise starts and ends at Shanghai, at the northern most point of 85°13.57'N.The result shows that the surface concentration of black carbon in the Arctic Ocean is the lowest throughout the course, with the mean of (5.3±3.7)ng/m³. There is little meridional gradient of black carbon concentration observed in the Arctic Ocean north of 70°N. Back trajectory analysis indicates that the transportation from low latitude to the Arctic Ocean north of 70°N in summer results not only in low surface concentrations of black carbon, but also in a small variation and a very weak meridional gradient. The black carbon concentrations in surfaces of Huanghai Sea and the Sea of Japan are very close each other in both July and September. The black carbon concentration in September is in range of 400 500 ng/m³, which is 3 times of that in July, 140 160 ng/m³. The terrigencus transport from the northeast Asia land and Alaska is a crucial element to influence the level of black carbon concentration in the ocean.
- third national arctic research expedition of China,
- black carbon,
- aerosol,
- observation

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