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DTIC ADA128371: Arctic Haze: Natural or Pollution? |
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by Defense Technical Information Center |
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The overall chemical composition of the Arctic aerosol |
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was better defined; sulfur and carbon dominate. Different |
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Mn/V ratios on different sides of the Arctic were found; |
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both were inconsistent with eastern North American |
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source. 222Rn data for Barrow were produced. They |
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indicated a source to the north. Arguments were developed |
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for a Eurasian source and against a North American source |
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of Arctic aerosol. Chemical and physical aspects of long- |
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range transport of polluted air masses to the Arctic were |
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revealed by numerical simulation. The cloud-active |
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fraction of the aerosol of Iceland was seen to parallel |
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pollution-derived SO4 and V. Heating by Arctic aerosol in |
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spring was calculated. Deposition of aerosol to the |
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Arctic Ocean was estimated. High Br in North American |
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Arctic in spring was noted--neither source nor effects is |
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yet known. Trace-element composition of desert soils was |
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found to be nearly constant within the aerosol-size range |
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and form desert to desert, but highly variable for larger |
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particles. Particle-size distributions of Fairbanks |
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aerosol were estimated by inverting optical data. |
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Cloudiness in the Arctic was found to be generally |
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unchanged since 1920. Haze was reported in 114 of 3274 |
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Ptarmigan flights, with greatest frequency in March-May. |
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Date Published: 2018-01-11 23:19:42 |
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Identifier: DTIC_ADA128371 |
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Item Size: 122506040 |
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Language: english |
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Media Type: texts |
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# Topics |
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DTIC Archive; Rahn, Kenneth A ; RHODE... |
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@chris85 |
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