Observed and projected urban extreme rainfall events in India

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dc.contributor.author Haider, Ali
dc.contributor.author Mishra, Vimal
dc.contributor.author Pai, D. S.
dc.date.accessioned 2014-10-29T10:46:44Z
dc.date.available 2014-10-29T10:46:44Z
dc.date.issued 2014-11
dc.identifier.citation Ali, Haider; Mishra, Vimal and Pai, D. S., “Observed and projected urban extreme rainfall events in India”, Journal of Geophysical Research: Atmospheres,, DOI: 10.1002/2014JD022264, Nov. 2014. en_US
dc.identifier.issn 2169-8996
dc.identifier.uri http://dx.doi.org/10.1002/2014JD022264
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/1460
dc.description.abstract We examine changes in extreme rainfall indices over 57 major urban areas in India under the observed (1901–2010) and projected future climate (2010–2060). Between 1901 and 2010, only four out of the total 57 urban areas showed a significant (p-value <0.05) increasing trend in the monsoon maximum rainfall (MMR). Time varying trends for the various rainfall indices exhibited that only a few urban areas experienced significant increases in the extreme rainfall indices for the different periods. Moreover, rainfall maxima for 1–10 day durations and at 100 year return period did not change significantly over the majority of urban areas in the post 1955 period. Results do not indicate any significant change (p > 0.05) in the pooled mean and distribution of the extreme rainfall indices for the pre and post 1983 periods revealing an insignificant role of urbanization on rainfall extremes in the major urban areas in India. We find that at the majority of urban areas changes in the extreme rainfall indices are driven by large scale climate variability. Regional Climate Models (RCMs) that participated in the CORDEX-South Asia program showed a significant bias in the monsoon maximum rainfall and rainfall maxima at 100-year return period for the majority of urban areas. For instance, most of the models fail to simulate rainfall maxima within ±10% bias, which can be considered appropriate for a stormwater design at many urban areas. Rainfall maxima at 1–3 day durations and 100-year return period is projected to increase significantly under the projected future climate at the majority of urban areas in India. The number of urban areas with significant increases in rainfall maxima under the projected future climate is far larger than the number of areas that experienced significant changes in the historic climate (1901–2010), which warrants a careful attention for urban stormwater infrastructure planning and management. en_US
dc.description.statementofresponsibility by Ali Haider, Vimal Mishra and D. S. Pai
dc.format.extent vol. 119, no. 22, pp. 12621-12641
dc.language.iso en en_US
dc.publisher Wiley en_US
dc.subject Precipitation Extremes en_US
dc.subject RCMs en_US
dc.subject Stormwater designs en_US
dc.subject Urbanization en_US
dc.title Observed and projected urban extreme rainfall events in India en_US
dc.type Article en_US
dc.relation.journal Journal of Geophysical Research: Atmospheres


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