Arctic hazes in summer over Greenland and the North American Arctic: II. Nature and concentrations of accumulation-mode and giant particles |
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Authors: | Yutaka Ishizaka Peter V Hobbs Lawrence F Radke |
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Institution: | (1) Cloud and Aerosol Research Group Atmospheric Sciences Department, University of Washington, 98195 Seattle, WA;(2) Present address: Water Research Institute, Nagoya University, Chikusa-Ku, 464 Nagoya, Japan |
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Abstract: | Airborne measurements made during August 1985 over Greenland and its environs show that both accumulation-mode (0.1 m D2.0 m) and giant (D2 m) particles were present in relatively high concentrations in arctic haze layers and that the accumulation-mode particles dominated light scattering. Particles with diameters (D) between 1 and 4 m consisted predominately of mixed materials, small and dense inclusions, and probably organic compounds containing sulfur. Many of the particles from 0.1 to 1 m in diameter were also of mixed composition, with sulfuric acid, ammonium sulfate and organics probably the dominant constituents. |
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Keywords: | Arctic haze pollution in the Arctic particles in the arctic atmosphere |
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