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Particle Size Distribution Analysis of Mineral Dust in Polar Snow Using a Coulter Counter

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Title
Particle Size Distribution Analysis of Mineral Dust in Polar Snow Using a Coulter Counter
Authors
Kang, Jung-Ho
Hwang, Heejin
Hong, Sang-Bum
Hur, Soon Do
Subject
Oceanography
Keywords
Mineral dust; Snow; Coulter counter; Antarctica; Greenland
Issue Date
2014
Citation
Kang, Jung-Ho., et al. 2014. Particle Size Distribution Analysis of Mineral Dust in Polar Snow Using a Coulter Counter. Ocean and Polar Reseach, 34(4): 319-326.
Abstract
Mineral dust in the polar snow plays an important role both in the climate system of the Earth and in global biogeochemical cycles. Analysis of the concentration and the particle size distribution of mineral dust has been carried out in the snow from the Antarctic surface snow and the Greenland snowpit. Among the various particle size determination techniques, a Multisizer 3 Coulter Counter in a class 100 clean bench counted all particles between 1.1 and 30.0 μm with a 50 μm aperture tube. The aperture tube size, the concentration of electrolytes and the accuracy of the particle size distribution were determined in this study. The number concentrations from the Antarctic surface snow were 81,843 particles mL1, but those from the Greenland snowpit were 10,666 particles mL1. In the volume distribution, the distributions of mineral dust in both the Antarctic surface snow and the Greenland snowpit showed lognormal distribution in the size interval 1.1 to 6.0 μm with the mode, 3.562 and 3.836 μm, respectively. The analysis technique using a coulter counter for mineral dust could be used for reconstructing paleoclimates from polar ice cores.
DOI
10.4217/OPR.2014.36.4.319
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