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| Titel |
Cloud's Center of Gravity – a compact approach to analyze convective cloud development |
| VerfasserIn |
I. Koren, O. Altaratz, G. Feingold, Z. Levin, T. Reisin |
| 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 ; 9, no. 1 ; Nr. 9, no. 1 (2009-01-12), S.155-161 |
| Datensatznummer |
250006636
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| Publikation (Nr.) |
 copernicus.org/acp-9-155-2009.pdf |
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| Zusammenfassung |
| As cloud resolving models become more detailed, with higher resolution
outputs, it is often complicated to isolate the physical processes that
control the cloud attributes. Moreover, due to the high dimensionality and
complexity of the model output, the analysis and interpretation of the
results can be very complicated. Here we suggest a novel approach to
convective cloud analysis that yields more insight into the physical and
temporal evolution of clouds, and is compact and efficient. The different
(3-D) cloud attributes are weighted and projected onto a single point in
space and in time, that has properties of, or similar to, the Center Of
Gravity (COG). The location, magnitude and spread of this variable are
followed in time. The implications of the COG approach are demonstrated for
a study of aerosol effects on a warm convective cloud. We show that in
addition to reducing dramatically the dimensionality of the output, such an
approach often enhances the signal, adds more information, and makes the
physical description of cloud evolution clearer, allowing unambiguous
comparison of clouds evolving in different environmental conditions. This
approach may also be useful for analysis of cloud data retrieved from
surface or space-based cloud radars. |
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