Topology and seasonal evolution of the network of extreme precipitation over the Indian subcontinent and Sri Lanka

V Stolbova, L Tupikina, B Bookhagen, N. Marwan, J Kurths

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Abstract

This paper employs a complex network approach to determine the topology and evolution of the network of extreme precipitation that governs the organization of extreme rainfall before, during, and after the Indian Summer Monsoon (ISM) season. We construct networks of extreme rainfall events during the ISM (June–September), post-monsoon (October–December), and pre-monsoon (March–May) periods from satellite-derived (Tropical Rainfall Measurement Mission, TRMM) and rain-gauge interpolated (Asian Precipitation Highly Resolved Observational Data Integration Towards the Evaluation of Water Resources, APHRODITE) data sets. The structure of the networks is determined by the level of synchronization of extreme rainfall events between different grid cells throughout the Indian subcontinent. Through the analysis of various complex-network metrics, we describe typical repetitive patterns in North Pakistan (NP), the Eastern Ghats (EG), and the Tibetan Plateau (TP). These patterns appear during the pre-monsoon season, evolve during the ISM, and disappear during the post-monsoon season. These are important meteorological features that need further attention and that may be useful in ISM timing and strength prediction.
Original languageEnglish
Pages (from-to)901-917
Number of pages17
JournalNonlinear Processes in Geophysics
Volume21
Issue number4
DOIs
Publication statusPublished - 29 Aug 2014

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Sri Lanka
monsoons
topology
Rain
monsoon
Topology
Complex networks
summer
Rain gages
rainfall
Data integration
Precipitation (meteorology)
Water resources
Synchronization
data integration
Satellites
rain gages
Pakistan
water resources
gauge

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Topology and seasonal evolution of the network of extreme precipitation over the Indian subcontinent and Sri Lanka. / Stolbova, V; Tupikina, L; Bookhagen, B; Marwan, N.; Kurths, J.

In: Nonlinear Processes in Geophysics, Vol. 21, No. 4, 29.08.2014, p. 901-917 .

Research output: Contribution to journalArticle

Stolbova, V ; Tupikina, L ; Bookhagen, B ; Marwan, N. ; Kurths, J. / Topology and seasonal evolution of the network of extreme precipitation over the Indian subcontinent and Sri Lanka. In: Nonlinear Processes in Geophysics. 2014 ; Vol. 21, No. 4. pp. 901-917 .
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