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

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 tro...

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Autores principales:	Haider Ali, Vimal Mishra
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b0b3c8a431a74839a8c832bf384e9d3e
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spelling	oai:doaj.org-article:b0b3c8a431a74839a8c832bf384e9d3e2021-12-02T11:52:18ZContrasting response of rainfall extremes to increase in surface air and dewpoint temperatures at urban locations in India10.1038/s41598-017-01306-12045-2322https://doaj.org/article/b0b3c8a431a74839a8c832bf384e9d3e2017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01306-1https://doaj.org/toc/2045-2322Abstract 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.Haider AliVimal MishraNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-15 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Haider Ali Vimal Mishra Contrasting response of rainfall extremes to increase in surface air and dewpoint temperatures at urban locations in India
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.
format	article
author	Haider Ali Vimal Mishra
author_facet	Haider Ali Vimal Mishra
author_sort	Haider Ali
title	Contrasting response of rainfall extremes to increase in surface air and dewpoint temperatures at urban locations in India
title_short	Contrasting response of rainfall extremes to increase in surface air and dewpoint temperatures at urban locations in India
title_full	Contrasting response of rainfall extremes to increase in surface air and dewpoint temperatures at urban locations in India
title_fullStr	Contrasting response of rainfall extremes to increase in surface air and dewpoint temperatures at urban locations in India
title_full_unstemmed	Contrasting response of rainfall extremes to increase in surface air and dewpoint temperatures at urban locations in India
title_sort	contrasting response of rainfall extremes to increase in surface air and dewpoint temperatures at urban locations in india
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/b0b3c8a431a74839a8c832bf384e9d3e
work_keys_str_mv	AT haiderali contrastingresponseofrainfallextremestoincreaseinsurfaceairanddewpointtemperaturesaturbanlocationsinindia AT vimalmishra contrastingresponseofrainfallextremestoincreaseinsurfaceairanddewpointtemperaturesaturbanlocationsinindia
_version_	1718395126014803968

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

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