Evaluating catchment response to artificial rainfall from four weather generators for present and future climate

Hjalte Jomo Danielsen Sørup, Steffen Davidsen, Roland Löwe, Søren Liedtke Thorndahl, Morten Borup, Karsten Arnbjerg-Nielsen

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Resumé

The technical lifetime of urban water infrastructure has a duration where climate change has to be considered when alterations to the system are planned. Also, models for urban water management are reaching a very high complexity level with, for example, decentralized stormwater control measures being included. These systems have to be evaluated under as close-to-real conditions as possible. Long term statistics (LTS) modelling with observational data is the most close-to-real solution for present climate conditions, but for future climate conditions artificial rainfall time series from weather generators (WGs) have to be used. In this study, we ran LTS simulations with four different WG products for both present and future conditions on two different catchments. For the present conditions, all WG products result in realistic catchment responses when it comes to the number of full flowing pipes and the number and volume of combined sewer overflows (CSOs). For future conditions, the differences in the WGs representation of the expectations to climate change is evident. Nonetheless, all future results indicate that the catchments will have to handle more events that utilize the full capacity of the drainage systems. Generally, WG products are relevant to use in planning of future changes to sewer systems.

OriginalsprogEngelsk
TidsskriftWater Science and Technology
Vol/bind77
Udgave nummer11-12
Sider (fra-til)2578-2588
Antal sider11
ISSN0273-1223
DOI
StatusUdgivet - jun. 2018

Fingerprint

Catchments
Rain
catchment
weather
Climate change
rainfall
climate
Statistics
Combined sewers
climate conditions
Decentralized control
Sewers
Water management
Drainage
Time series
Pipe
climate change
Planning
stormwater
water management

Emneord

  • Climate change
  • Combined sewer overflow
  • CSO
  • Long term statistics
  • LTS
  • Weather generator

Citer dette

Sørup, Hjalte Jomo Danielsen ; Davidsen, Steffen ; Löwe, Roland ; Thorndahl, Søren Liedtke ; Borup, Morten ; Arnbjerg-Nielsen, Karsten. / Evaluating catchment response to artificial rainfall from four weather generators for present and future climate. I: Water Science and Technology. 2018 ; Bind 77, Nr. 11-12. s. 2578-2588.
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Evaluating catchment response to artificial rainfall from four weather generators for present and future climate. / Sørup, Hjalte Jomo Danielsen; Davidsen, Steffen; Löwe, Roland; Thorndahl, Søren Liedtke; Borup, Morten; Arnbjerg-Nielsen, Karsten.

I: Water Science and Technology, Bind 77, Nr. 11-12, 06.2018, s. 2578-2588.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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AU - Arnbjerg-Nielsen, Karsten

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