Warming effects on the urban hydrology in cold climate regions

Abstract While approximately 338 million people in the Northern hemisphere live in regions that are regularly snow covered in winter, there is little hydro-climatologic knowledge in the cities impacted by snow. Using observations and modelling we have evaluated the energy and water exchanges of four...

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Autores principales:	L. Järvi, C. S. B. Grimmond, J. P. McFadden, A. Christen, I. B. Strachan, M. Taka, L. Warsta, M. Heimann
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/43737cdb115a49499edc3f4812187e06
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spelling	oai:doaj.org-article:43737cdb115a49499edc3f4812187e062021-12-02T15:04:53ZWarming effects on the urban hydrology in cold climate regions10.1038/s41598-017-05733-y2045-2322https://doaj.org/article/43737cdb115a49499edc3f4812187e062017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05733-yhttps://doaj.org/toc/2045-2322Abstract While approximately 338 million people in the Northern hemisphere live in regions that are regularly snow covered in winter, there is little hydro-climatologic knowledge in the cities impacted by snow. Using observations and modelling we have evaluated the energy and water exchanges of four cities that are exposed to wintertime snow. We show that the presence of snow critically changes the impact that city design has on the local-scale hydrology and climate. After snow melt, the cities return to being strongly controlled by the proportion of built and vegetated surfaces. However in winter, the presence of snow masks the influence of the built and vegetated fractions. We show how inter-year variability of wintertime temperature can modify this effect of snow. With increasing temperatures, these cities could be pushed towards very different partitioning between runoff and evapotranspiration. We derive the dependency of wintertime runoff on this warming effect in combination with the effect of urban densification.L. JärviC. S. B. GrimmondJ. P. McFaddenA. ChristenI. B. StrachanM. TakaL. WarstaM. HeimannNature 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 L. Järvi C. S. B. Grimmond J. P. McFadden A. Christen I. B. Strachan M. Taka L. Warsta M. Heimann Warming effects on the urban hydrology in cold climate regions
description	Abstract While approximately 338 million people in the Northern hemisphere live in regions that are regularly snow covered in winter, there is little hydro-climatologic knowledge in the cities impacted by snow. Using observations and modelling we have evaluated the energy and water exchanges of four cities that are exposed to wintertime snow. We show that the presence of snow critically changes the impact that city design has on the local-scale hydrology and climate. After snow melt, the cities return to being strongly controlled by the proportion of built and vegetated surfaces. However in winter, the presence of snow masks the influence of the built and vegetated fractions. We show how inter-year variability of wintertime temperature can modify this effect of snow. With increasing temperatures, these cities could be pushed towards very different partitioning between runoff and evapotranspiration. We derive the dependency of wintertime runoff on this warming effect in combination with the effect of urban densification.
format	article
author	L. Järvi C. S. B. Grimmond J. P. McFadden A. Christen I. B. Strachan M. Taka L. Warsta M. Heimann
author_facet	L. Järvi C. S. B. Grimmond J. P. McFadden A. Christen I. B. Strachan M. Taka L. Warsta M. Heimann
author_sort	L. Järvi
title	Warming effects on the urban hydrology in cold climate regions
title_short	Warming effects on the urban hydrology in cold climate regions
title_full	Warming effects on the urban hydrology in cold climate regions
title_fullStr	Warming effects on the urban hydrology in cold climate regions
title_full_unstemmed	Warming effects on the urban hydrology in cold climate regions
title_sort	warming effects on the urban hydrology in cold climate regions
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/43737cdb115a49499edc3f4812187e06
work_keys_str_mv	AT ljarvi warmingeffectsontheurbanhydrologyincoldclimateregions AT csbgrimmond warmingeffectsontheurbanhydrologyincoldclimateregions AT jpmcfadden warmingeffectsontheurbanhydrologyincoldclimateregions AT achristen warmingeffectsontheurbanhydrologyincoldclimateregions AT ibstrachan warmingeffectsontheurbanhydrologyincoldclimateregions AT mtaka warmingeffectsontheurbanhydrologyincoldclimateregions AT lwarsta warmingeffectsontheurbanhydrologyincoldclimateregions AT mheimann warmingeffectsontheurbanhydrologyincoldclimateregions
_version_	1718389011883491328

Warming effects on the urban hydrology in cold climate regions

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