Contrasting response of rainfall extremes to increase in surface air and dewpoint temperatures at urban locations in India

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dc.contributor.author Ali, Haider
dc.contributor.author Mishra, Vimal
dc.date.accessioned 2017-05-22T05:47:43Z
dc.date.available 2017-05-22T05:47:43Z
dc.date.issued 2017-04
dc.identifier.citation Ali, Haider and Mishra, Vimal, “Contrasting response of rainfall extremes to increase in surface air and dewpoint temperatures at urban locations in India”, Scientific Reports, DOI: 10.1038/s41598-017-01306-1, vol. 7, no. 1, Apr. 2017. en_US
dc.identifier.issn 2045-2322
dc.identifier.issn 2045-2322
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/2932
dc.identifier.uri http://dx.doi.org/10.1038/s41598-017-01306-1
dc.description.abstract Rainfall extremes are projected to increase under the warming climate. The Clausius-Clapeyron (C-C) relationship provides a physical basis to understand the sensitivity of rainfall extremes in response to warming, however, relationships between rainfall extremes and air temperature over tropical regions remain uncertain. Here, using station based observations and remotely sensed rainfall, we show that at a majority of urban locations, rainfall extremes show a negative scaling relationship against surface air temperature (SAT) in India. The negative relationship between rainfall extremes and SAT in India can be attributed to cooling (SAT) due to the monsoon season rain events in India, suggesting that SAT alone is not a good predictor of rainfall extremes in India. In contrast, a strong (higher than C-C rate) positive relationship between rainfall extremes and dew point (DPT) and tropospheric temperature (T850) is shown for most of the stations, which was previously unexplored. Subsequently, DPT and T850 were used as covariates for non-stationary daily design storms. Higher magnitude design storms were obtained under the assumption of a non-stationary climate. The contrasting relationship between rainfall extremes with SAT and DPT has implications for understanding the changes in rainfall extremes in India under the projected climate. en_US
dc.description.statementofresponsibility by Haider Ali and Vimal Mishra
dc.format.extent Vol. 7, no. 1
dc.language.iso en_US en_US
dc.publisher Nature en_US
dc.title Contrasting response of rainfall extremes to increase in surface air and dewpoint temperatures at urban locations in India en_US
dc.relation.journal Scientific Reports


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