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En studie av framtida flödesbelastning på Stockholms huvudavloppssystem
SMHI, Research Department, Hydrology.ORCID iD: 0000-0002-1986-8374
SMHI, Professional Services.
SMHI.
Stockholm Vatten AB.
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2011 (Swedish)Report (Other academic)
Abstract [sv]

Denna studie utfördes inom SWEdish research programme on Climate, Impacts and Adaptation (SWECIA), finansierat av Stiftelsen för Miljöstratgisk Forskning (MISTRA), med delfinansiering från Stockholm Vatten AB.Studiens syfte var att bedöma flödesbelastningen på Stockholms huvudavloppssystem under resten av detta sekel mot bakgrund av både klimatförändring och befolkningsökning. Som underlag gjordes flödes-simuleringar med MIKE Urban. Referenssimuleringar för dagens klimat gjordes dels för ett representativt helår (1984), dels för c:a 200 utvalda regnhändelser mellan 1983 och 2007. I framtidssimuleringar beskrevs klimateffekten genom omskalning av indata (temperatur, nederbörd, avdunstning) i enlighet med klimatmodellscenarier och befolknings-effekten genom en ökning i enlighet med officiell bedömning.Resultaten indikerar framför allt att bräddade volymer till Mälaren och Saltsjön kommer att öka kraftigt, men även ett ökat inflöde till reningsverket, och därmed ökat behov av rening, samt en ökad översvämningsrisk.

Abstract [en]

This study was performed within the SWEdish research programme on Climate, Impacts and Adaptation (SWECIA), funded by the Foundation for Strategic Environmental Research (MISTRA), with additional funding from Stockholm Vatten AB. The aim of the study was to assess the discharge load on Stockholm's main sewer system during the rest of this century in light of both climate change and population increase. For this assessment, flow simulations with MIKE Urban were performed. Reference simulations for today's climate were done both for a representative year (1984) and for some 200 selected rainfall events between 1983 and 2007. In future simulations the climate effect was taken into account by rescaling input data (temperature, precipitation, evaporation) in line with climate model scenarios and the population effect by an increase in line with official estimations. The results indicate in particular that the spill volumes to Lake Mälaren and Saltsjön will increase substantially, but also an increased inflow to the treatment plant, and thus an increased need for treatment, and an increased flood risk.

Place, publisher, year, edition, pages
SMHI , 2011. , 96 p.
Series
Climatology, ISSN 1654-2258 ; 3
Keyword [en]
Climate change, population increase, Stockholm sewer system, discharge, spill, flooding
Identifiers
URN: urn:nbn:se:smhi:diva-2231Local ID: Klimat, Rapporter, Serie KlimatologiOAI: oai:DiVA.org:smhi-2231DiVA: diva2:947524
Available from: 2011-02-08 Created: 2016-07-08 Last updated: 2016-07-08Bibliographically approved

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