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Sunset through Vog

Sunset through Vog

Posted: 03/31/18

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"Vog" is a mashup of the words volcanic and smog, a notorious phenomenon on the Big Island arising from two active craters of Kilauea. The volcano belches around 3,000 tons of sulfur dioxide per day, along with other sulfates, ammonia, steam, particulate matter (smoke), and smaller aerosols. The high ridges sloping off huge, nearby Mauna Loa channel prevailing easterly and northeasterly tradewinds containing the plume around the Big Island’s south side. It then turns northward toward the Kona and Kohala coasts, accumulating in relative slack zones of weak flow. All the while, the volcanic effluent interacts with moisture and sunlight, turning into an acrid layer of fumes and soot that lowers visibility, sometimes irritates even healthy people, and can be dangerous for those with respiratory trouble. It's the major cause of foul air and human and biological distress on the Big Island, showing that “natural” isn’t necessarily better when it comes to pollution. Agricultural damage from vog led to disaster declarations on the island in 2008 and 2012. The one upside is its wild effects on already beautiful Kona coast sunsets!


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