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| Titel |
The Impact of Hawaiian Volcanoes on Climate |
| VerfasserIn |
H. Pearce, K. Pringle, A. Schmidt, K. S. Carslaw |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250067177
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| Zusammenfassung |
| Kilauea Volcano in Hawaii has been effusively erupting sulphur dioxide from the summit and
East Rift Zone since 1983. To investigate the impact of this volcanic SO2 source on both the
regional and global aerosol burden we have used a global aerosol model (GLOMAP)
to simulate two eruption scenarios: the first is a control simulation in which no
emission of SO2 from Kilauea is permitted, the second is a perturbed simulation in
which SO2 emissions from Kilauea representative of the year 2005 are used. All
other SO2 emissions were left unperturbed and both simulations cover a 12 month
period. Observations suggest that 2005 represents a year of above average SO2
emission. We estimate that Kilauea volcano contributes to an increase in the total
particle number (above 3nm in diameter) of up to 100cm3 between 7 and 18km in
altitude in the mid to low latitudes of the northern hemisphere. Increases in cloud
condensation nuclei number concentration are localised to the 30 degrees in latitude around
Kilauea, and to 3km in altitude. Outside of this area the impact on CCN is small. |
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