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Nutrient transport scenarios in a changing Stockholm and Mälaren valley region, Sweden
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630).
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630).
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2005 (English)In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 51, no 3-4, 31-38 p.Article in journal (Refereed) Published
Abstract [en]

Norrstrom catchment, west of Stockholm, covers most of the Malaren valley. Provision of drinking water from Lake Malaren is an absolute precondition for continued growth in the region. Stockholm County's population is expected to increase by 600,000 people before 2030. Current climate change predictions anticipate significant temperature and precipitation increases. We implement the PolFlow model embedded in PCRaster for quantifying water and substances fluxes on the catchment scale over a 30-year time horizon. We formulate scenarios for changes in water quality and quantity due to climate change and population development. Results indicate a mild impact from climate change on surface flow rates but substantial effects on sub-surface residence times. Population development slightly affects nutrients loads. Using source apportionment and sensitivity analysis, we identify a number of critical parameters/processes to be further studied, in order for future results to be more reliable and usable in a water resources management context.

Place, publisher, year, edition, pages
2005. Vol. 51, no 3-4, 31-38 p.
Keyword [en]
water basin management, eutrophication, GIS, climate change, population growth
National Category
Oceanography, Hydrology, Water Resources
URN: urn:nbn:se:kth:diva-14718ISI: 000228827100006ScopusID: 2-s2.0-17544378581OAI: diva2:332759
7th IWA International Specialised Conference on Diffuse Pollution and Basin Management. Dublin, IRELAND. AUG 17-21, 2003

QC 20100525 QC 20111011.

Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2014-12-02Bibliographically approved

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Darracq, AmélieGreffe, FannyHannerz, FredrikCvetkovic, Vladimir
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