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Climate change impacts on runoff in Sweden - Assessments by global climate models, dynamical downscalling and hydrological modelling

Bergström, S. ; Carlsson, B. ; Gardelin, M. ; Lindström, G. ; Petterson, A. and Rummukainen, M. LU orcid (2001) In Climate Research 16(2). p.101-112
Abstract

The Swedish regional climate modelling programme, SWECLIM, started in 1997 with the main goal being to produce regional climate change scenarios over the Nordic area on a time scale of 50 to 100 yr. An additional goal is to produce water resources scenarios with a focus on hydropower production, dam safety, water supply and environmental aspects of water resources. The scenarios are produced by a combination of global climate models (GCMs), regional climate models and hydrological runoff models. The GCM simulations used thus far are 10 yr time slices from 2 different GCMs, UKMO HadCM2 from the Hadley Centre and the ECHAM4/OPYC3 of the Max Planck Institute for Meteorology. The regional climate model is a modified version of the... (More)

The Swedish regional climate modelling programme, SWECLIM, started in 1997 with the main goal being to produce regional climate change scenarios over the Nordic area on a time scale of 50 to 100 yr. An additional goal is to produce water resources scenarios with a focus on hydropower production, dam safety, water supply and environmental aspects of water resources. The scenarios are produced by a combination of global climate models (GCMs), regional climate models and hydrological runoff models. The GCM simulations used thus far are 10 yr time slices from 2 different GCMs, UKMO HadCM2 from the Hadley Centre and the ECHAM4/OPYC3 of the Max Planck Institute for Meteorology. The regional climate model is a modified version of the international HIRLAM forecast model and the hydrological model is the HBV model developed at the Swedish Meteorological and Hydrological Institute. Scenarios of river runoff have been simulated for 6 selected basins covering the major climate regions in Sweden. Changes in runoff totals, runoff regimes and extreme values have been analysed with a focus on the uncertainties introduced by the choice of GCM and routines for estimation of evapotranspiration in the hydrological model. It is further shown how these choices affect the statistical return periods of future extremes in a design situation.

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author
; ; ; ; and
publishing date
type
Contribution to journal
publication status
published
keywords
Climate change impact, Evapotranspiration, HBV, Hydrological model, Regional climate model, Scenario, SWECLIM, Water resources
in
Climate Research
volume
16
issue
2
pages
12 pages
publisher
Inter-Research
external identifiers
  • scopus:0035905690
ISSN
0936-577X
DOI
10.3354/cr016101
language
English
LU publication?
no
id
badb26af-f0f6-4c20-a151-e14c28c941ba
date added to LUP
2025-09-30 18:49:05
date last changed
2025-10-14 09:10:49
@article{badb26af-f0f6-4c20-a151-e14c28c941ba,
  abstract     = {{<p>The Swedish regional climate modelling programme, SWECLIM, started in 1997 with the main goal being to produce regional climate change scenarios over the Nordic area on a time scale of 50 to 100 yr. An additional goal is to produce water resources scenarios with a focus on hydropower production, dam safety, water supply and environmental aspects of water resources. The scenarios are produced by a combination of global climate models (GCMs), regional climate models and hydrological runoff models. The GCM simulations used thus far are 10 yr time slices from 2 different GCMs, UKMO HadCM2 from the Hadley Centre and the ECHAM4/OPYC3 of the Max Planck Institute for Meteorology. The regional climate model is a modified version of the international HIRLAM forecast model and the hydrological model is the HBV model developed at the Swedish Meteorological and Hydrological Institute. Scenarios of river runoff have been simulated for 6 selected basins covering the major climate regions in Sweden. Changes in runoff totals, runoff regimes and extreme values have been analysed with a focus on the uncertainties introduced by the choice of GCM and routines for estimation of evapotranspiration in the hydrological model. It is further shown how these choices affect the statistical return periods of future extremes in a design situation.</p>}},
  author       = {{Bergström, S. and Carlsson, B. and Gardelin, M. and Lindström, G. and Petterson, A. and Rummukainen, M.}},
  issn         = {{0936-577X}},
  keywords     = {{Climate change impact; Evapotranspiration; HBV; Hydrological model; Regional climate model; Scenario; SWECLIM; Water resources}},
  language     = {{eng}},
  month        = {{01}},
  number       = {{2}},
  pages        = {{101--112}},
  publisher    = {{Inter-Research}},
  series       = {{Climate Research}},
  title        = {{Climate change impacts on runoff in Sweden - Assessments by global climate models, dynamical downscalling and hydrological modelling}},
  url          = {{http://dx.doi.org/10.3354/cr016101}},
  doi          = {{10.3354/cr016101}},
  volume       = {{16}},
  year         = {{2001}},
}