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| Titel |
Spatial structures and directionalities in Monsoonal precipitation over South Asia |
| VerfasserIn |
N. Malik, N. Marwan, J. Kurths |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 17, no. 5 ; Nr. 17, no. 5 (2010-09-01), S.371-381 |
| Datensatznummer |
250013718
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| Publikation (Nr.) |
 copernicus.org/npg-17-371-2010.pdf |
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| Zusammenfassung |
| Precipitation during the monsoon season over the Indian subcontinent occurs
in form of enormously complex spatiotemporal patterns due to the underlying
dynamics of atmospheric circulation and varying topography. Employing methods
from nonlinear time series analysis, we study spatial structures of the
rainfall field during the summer monsoon and identify principle regions where
the dynamics of monsoonal rainfall is more coherent or homogenous. Moreover,
we estimate the time delay patterns of rain events. Here we present an
analysis of two separate high resolution gridded data sets of daily rainfall
covering the Indian subcontinent. Using the method of event synchronization
(ES), we estimate regions where heavy rain events during monsoon happen in
some lag synchronised form. Further using the delay behaviour of rainfall
events, we estimate the directionalities related to the progress of such type
of rainfall events. The Active (break) phase of a monsoon is characterised by
an increase(decrease) of rainfall over certain regions of the Indian
subcontinent. We show that our method is able to identify regions of such
coherent rainfall activity. |
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