Global assessment of flood and storm extremes with increased temperatures

Abstract There is overwhelming consensus that the intensity of heavy precipitation events is increasing in a warming world. It is generally expected such increases will translate to a corresponding increase in flooding. Here, using global data sets for non-urban catchments, we investigate the sensit...

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Autores principales:	Conrad Wasko, Ashish Sharma
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/66d975ea1c2344768ae4b683db6d9e0d
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spelling	oai:doaj.org-article:66d975ea1c2344768ae4b683db6d9e0d2021-12-02T12:32:32ZGlobal assessment of flood and storm extremes with increased temperatures10.1038/s41598-017-08481-12045-2322https://doaj.org/article/66d975ea1c2344768ae4b683db6d9e0d2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08481-1https://doaj.org/toc/2045-2322Abstract There is overwhelming consensus that the intensity of heavy precipitation events is increasing in a warming world. It is generally expected such increases will translate to a corresponding increase in flooding. Here, using global data sets for non-urban catchments, we investigate the sensitivity of extreme daily precipitation and streamflow to changes in daily temperature. We find little evidence to suggest that increases in heavy rainfall events at higher temperatures result in similar increases in streamflow, with most regions throughout the world showing decreased streamflow with higher temperatures. To understand why this is the case, we assess the impact of the size of the catchment and the rarity of the event. As the precipitation event becomes more extreme and the catchment size becomes smaller, characteristics such as the initial moisture in the catchment become less relevant, leading to a more consistent response of precipitation and streamflow extremes to temperature increase. Our results indicate that only in the most extreme cases, for smaller catchments, do increases in precipitation at higher temperatures correspond to increases in streamflow.Conrad WaskoAshish SharmaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Conrad Wasko Ashish Sharma Global assessment of flood and storm extremes with increased temperatures
description	Abstract There is overwhelming consensus that the intensity of heavy precipitation events is increasing in a warming world. It is generally expected such increases will translate to a corresponding increase in flooding. Here, using global data sets for non-urban catchments, we investigate the sensitivity of extreme daily precipitation and streamflow to changes in daily temperature. We find little evidence to suggest that increases in heavy rainfall events at higher temperatures result in similar increases in streamflow, with most regions throughout the world showing decreased streamflow with higher temperatures. To understand why this is the case, we assess the impact of the size of the catchment and the rarity of the event. As the precipitation event becomes more extreme and the catchment size becomes smaller, characteristics such as the initial moisture in the catchment become less relevant, leading to a more consistent response of precipitation and streamflow extremes to temperature increase. Our results indicate that only in the most extreme cases, for smaller catchments, do increases in precipitation at higher temperatures correspond to increases in streamflow.
format	article
author	Conrad Wasko Ashish Sharma
author_facet	Conrad Wasko Ashish Sharma
author_sort	Conrad Wasko
title	Global assessment of flood and storm extremes with increased temperatures
title_short	Global assessment of flood and storm extremes with increased temperatures
title_full	Global assessment of flood and storm extremes with increased temperatures
title_fullStr	Global assessment of flood and storm extremes with increased temperatures
title_full_unstemmed	Global assessment of flood and storm extremes with increased temperatures
title_sort	global assessment of flood and storm extremes with increased temperatures
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/66d975ea1c2344768ae4b683db6d9e0d
work_keys_str_mv	AT conradwasko globalassessmentoffloodandstormextremeswithincreasedtemperatures AT ashishsharma globalassessmentoffloodandstormextremeswithincreasedtemperatures
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Global assessment of flood and storm extremes with increased temperatures

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