Anonymous
Anonymous asked in Science & MathematicsEarth Sciences & Geology · 1 decade ago

Volanic emission of CO2 question?

The greenhouse effect induced by the volcanic emission of CO2 into the atmosphere is often counterbalanced by _____________.

a) the emission of great quantities of steam

b) the condensation of steam clouds

c) the melting of glacial ice

d) the ejection of vast quantities of pyroclastic dust

Update:

Sooo I think it's either A or B...but i'm not sure...anyone?

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  • 10 years ago
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    The answer is d - the emission of pyroclastic dust.

    The dust has two effects:

    - reflection of sunlight thus cooling the earth

    - fertilization of the oceans with iron rich dust, which encourages the growth of phytoplankton which absorb carbon dioxide.

    The eruption of Mt Pinatubo (Philippines) in 1991 and the eruption of Eyjafjallajökull (Iceland) in 2010 were both followed by periods of reduced carbon dioxide build up. This is briefly documented at the end of the link.

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