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Impacts of volcanic eruptions (Global impacts (Arse from release of gases))

- - - - Climatic effect is Heating
        
        1 Volcano
        
        relatively insignificant
        
        Can be long lived (100's years)
        
        if
        
        many eruptions many volcanoes many years
    - - Mt Pinatobu
        
        Very little known
        
        Prior earthquake
        
        Dormant
        
        Lots of SO2 emission
    - - Mid-ocean ridges
        
        Underwater, therefore no impact on atmosphere
      - Mt Kilauea (Hawaii)
        
        Release of CO2 is insignificant
    - - Reacts to form sulphuric acid and sulphate aerosols which reduce solar radiation
      - Climatic effect is cooling- short lived
    - - Fine ash is reflective of solar radiation- less heat reaches earth