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| Titel |
Investigations of aerosol impacts on hurricanes: virtual seeding flights |
| VerfasserIn |
G. G. Carrio, W. R. Cotton |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 11, no. 6 ; Nr. 11, no. 6 (2011-03-18), S.2557-2567 |
| Datensatznummer |
250009507
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| Publikation (Nr.) |
 copernicus.org/acp-11-2557-2011.pdf |
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| Zusammenfassung |
This paper examines the feasibility of mitigating the intensity of
hurricanes by enhancing the CCN concentrations in the outer rainband region.
Increasing CCN concentrations would cause a reduced collision and
coalescence, resulting in more supercooled liquid water to be transported
aloft which then freezes and enhances convection via enhanced latent heat of
freezing. The intensified convection would condense more water ultimately
enhancing precipitation in the outer rainbands. Enhanced evaporative cooling
from the increased precipitation in the outer rainbands would produce
stronger and more widespread areal cold pools which block the flow of energy
into the storm core, ultimately inhibiting the intensification of the
tropical cyclone.
We designed a series of multi-grid for which the time of the "virtual
flights" as well as the aerosol release rates are varied. A code that
simulates the flight of a plane is used to increase the CCN concentrations
as an aircraft flies. Results show a significant sensitivity to both the
seeding time and the aerosol release rates and support the aforementioned
hypothesis. |
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