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Urbanwater management vs. climate change: Impacts on cold region waste water inflows

Semadeni Davies, Annette LU (2004) In Climatic Change 64(1-2). p.103-126
Abstract
Failure to account for non-climatic changes to water systems, such as design and operation, within climate change impact assessments leads to misconceptions because these activities buffer the human built enviroment from bio-physical impacts. Urban drainage in cold regions, which is dominated by snowmelt, is especially vulnerable to climate change and is investigated in this paper within the context of future rehabilitation of the sewer network. The objectives are to illustrate the relative response of urban drainage to changes in both the pipe network and climate and demonstrate the use of response surfaces for climate change studies. An incremental climate scenario approach is used to generate two sensitivity analyses for waste water... (More)
Failure to account for non-climatic changes to water systems, such as design and operation, within climate change impact assessments leads to misconceptions because these activities buffer the human built enviroment from bio-physical impacts. Urban drainage in cold regions, which is dominated by snowmelt, is especially vulnerable to climate change and is investigated in this paper within the context of future rehabilitation of the sewer network. The objectives are to illustrate the relative response of urban drainage to changes in both the pipe network and climate and demonstrate the use of response surfaces for climate change studies. An incremental climate scenario approach is used to generate two sensitivity analyses for waste water inflows to the Lycksele waste water treatment plant in north-central Sweden. Air temperature and precipitation data ( 1984 - 1993) are altered incrementally between - 5 and + 15degreesC and - 10 and + 40% respectively. These data are then used to drive a hydrological transformation model to obtain estimates of sewer infiltration from groundwater. The results are presented as winter and spring response surfaces - these are graphical representations of a response matrix where each point relates to a single model run. Climate scenario envelopes which summarise a series of GCM runs ( ACACIA; Carter, 2002, pers. comm.) are overlaid to indicate the range of plausible waste water inflows. Estimates of natural multi-decadal variability are also included. The first sensitivity analysis assumes no change to the drainage system while the second simulates sewer renovation in which the system is fully separated and sewer infiltration is reduced. The main conclusions are that innovations in drainage network technology have a greater potential to alter waste water inflows than climate change and that, while the direction of climate change is fairly certain, there is great uncertainty surrounding magnitude of those changes and their impacts. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Climatic Change
volume
64
issue
1-2
pages
103 - 126
publisher
Springer
external identifiers
  • wos:000220927500007
  • scopus:3343008089
ISSN
0165-0009
DOI
10.1023/B:CLIM.0000024669.22066.04
language
English
LU publication?
yes
id
b36c8909-3e08-4b9d-a9bd-844f7e4e2ca8 (old id 281045)
date added to LUP
2007-10-31 13:39:37
date last changed
2017-02-05 03:39:50
@article{b36c8909-3e08-4b9d-a9bd-844f7e4e2ca8,
  abstract     = {Failure to account for non-climatic changes to water systems, such as design and operation, within climate change impact assessments leads to misconceptions because these activities buffer the human built enviroment from bio-physical impacts. Urban drainage in cold regions, which is dominated by snowmelt, is especially vulnerable to climate change and is investigated in this paper within the context of future rehabilitation of the sewer network. The objectives are to illustrate the relative response of urban drainage to changes in both the pipe network and climate and demonstrate the use of response surfaces for climate change studies. An incremental climate scenario approach is used to generate two sensitivity analyses for waste water inflows to the Lycksele waste water treatment plant in north-central Sweden. Air temperature and precipitation data ( 1984 - 1993) are altered incrementally between - 5 and + 15degreesC and - 10 and + 40% respectively. These data are then used to drive a hydrological transformation model to obtain estimates of sewer infiltration from groundwater. The results are presented as winter and spring response surfaces - these are graphical representations of a response matrix where each point relates to a single model run. Climate scenario envelopes which summarise a series of GCM runs ( ACACIA; Carter, 2002, pers. comm.) are overlaid to indicate the range of plausible waste water inflows. Estimates of natural multi-decadal variability are also included. The first sensitivity analysis assumes no change to the drainage system while the second simulates sewer renovation in which the system is fully separated and sewer infiltration is reduced. The main conclusions are that innovations in drainage network technology have a greater potential to alter waste water inflows than climate change and that, while the direction of climate change is fairly certain, there is great uncertainty surrounding magnitude of those changes and their impacts.},
  author       = {Semadeni Davies, Annette},
  issn         = {0165-0009},
  language     = {eng},
  number       = {1-2},
  pages        = {103--126},
  publisher    = {Springer},
  series       = {Climatic Change},
  title        = {Urbanwater management vs. climate change: Impacts on cold region waste water inflows},
  url          = {http://dx.doi.org/10.1023/B:CLIM.0000024669.22066.04},
  volume       = {64},
  year         = {2004},
}