Vog is volcanic smog formed when sulfur dioxide and other pollutants emitted by an erupting volcano mixes with oxygen and moisture in the presence of sunlight. The term is most often applied to Hawaii, where the Kilauea volcano has been erupting continuously since 1983. Image File history File links Vog_hilo_bay_2005. ... Sulfur dioxide (or Sulphur dioxide) has the chemical formula SO2. ... Eruption redirects here. ... General Name, Symbol, Number oxygen, O, 8 Chemical series Chalcogens Group, Period, Block 16, 2, p Appearance colorless Atomic mass 15. ... Prism splitting light Sunlight in the broad sense is the total spectrum of electromagnetic radiation given off by the Sun. ... The Island of Hawai‘i (called the Big Island or Hawai‘i proper) is one of the eight main islands that make up the state of Hawai‘i. ... Kīlauea is an active volcano in the Hawaiian Islands, one of five shield volcanoes that together form the Island of Hawaii. ... 1983 (MCMLXXXIII) is a common year starting on Saturday of the Gregorian calendar. ...

Vog is created when volcanic gases (specifically oxides of nitrogen) react with sunlight, oxygen and moisture. It is made up of a mixture of gasses and aerosols, which makes it hard to study and potentially more dangerous than either on their own. Although vog has not been as extensively studied as it could be, it has been found that most of the aerosols are acidic and of a size where they can remain in the lungs where they can damage and impair their function and degrade the performance of the immune system. People who have been exposed to vog report headaches, breathing difficulties (including inducing asthma attacks), flu-like symptoms, and general lethargy. These effects are especially pronounced with children. Most studies of vog have been in areas where vog is present, and not of the effects of vog itself (in controlled conditions). General Name, Symbol, Number nitrogen, N, 7 Chemical series nonmetals Group, Period, Block 15, 2, p Appearance colorless Atomic mass 14. ... General Name, Symbol, Number oxygen, O, 8 Chemical series Chalcogens Group, Period, Block 16, 2, p Appearance colorless Atomic mass 15. ... Moisture generally refers to the presence of water in trace amounts. ... Fatigue is a feeling of excessive tiredness or lethargy, with a desire to rest, perhaps to sleep. ...

In Hawaii, vog mostly affects the western coast of the island of Hawai'i, where the prevailing trade winds blow the vog to the southwest and wind patterns then blow it north up the coast. Prolonged periods of southerly winds, however, can cause vog to affect the eastern half of the island, and sometimes the entire state as well. Official language(s) Hawaiian and English Capital Honolulu Largest city Honolulu Area  - Total  - Width  - Length  - % water  - Latitude  - Longitude Ranked 43rd 28,337 km² n/a km 2,450 km 41. ... The Island of Hawai‘i (called the Big Island or Hawai‘i proper) is one of the eight main islands that make up the state of Hawai‘i. ... The trade winds are a pattern of wind found in bands around the Earths equatorial region. ...

External links

• Vog: A Volcanic Hazard