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| Titel |
Temporal climate-scale changes: global versus local artificially-induced perturbations - the interplay between atmospheric pollution and precipitation in Mexico City |
| VerfasserIn |
Jorge J. Castro, Luis G. Escandon-Alcazar, Alin A. Carsteanu |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250058156
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| Zusammenfassung |
| Tropical rainfall during the wet season is, to a large extent, the
result of evapotranspiration and heat-driven convection. In Mexico City,
which is located in a low-lying area between mountains, the local
character of this "short" water cycle is more pronounced than elsewhere.
Given this background, it appears that the atmospheric pollution
generated by the huge urban and industrial development over the last few
decades, while apparently not influencing the quantity of water that
participates in the cycle, is however influencing the qualitative
aspects of rainfall events, such as frequency and daily incipience
hours. The intimate mechanisms responsible for this part of the
pollution-rainfall interplay, such as the changes in precipitation
nuclei, are not completely elucidated. In the opposite direction of the
interaction, rainfall scavenges solid pollutant particles from the
atmosphere, hereby washing them away, a process that has been evaluated,
to a certain extent, in previous studies. Here, we analyze the
statistical behaviour of the process, and propose a stochastic model
thereof. |
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