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| Titel |
The S-HYPE model usefulness for WFD and floods directive in Sweden |
| VerfasserIn |
B. Arheimer, N. Hjerdt, Göran Lindström, H. Spångmyr |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250069604
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| Zusammenfassung |
| The integrated catchment model HYPE calculates water and nutrients for the whole of
Sweden (450Â 000 km2) in 38000 subbasins linked to 118 main rivers entering the
surrounding sea. This national simulation system is called S-HYPE (S for Sweden) and is
used both for the status-characterization requested by the WFD, and in forecast mode for the
operational flood warning service. To judge the models capability to map spatial variability,
the model results have been evaluated scientifically for ungauged basins in independent
observations sites of various sizes and land-uses (some 400 for water and about 800 for
nutrients). In addition, its predictive power to forecast fluctuations of river discharge is being
evaluated in some 80 indicator sites. The calculated and observed time-series can be
down-loaded for free from http://vattenweb.smhi.se/ along with judged model uncertainty for
each subbasin.
For the WFD, the S-HYPE model is also used for estimating remedial-measures effects
and evaluating measure plans. This is done in cooperation with local stakeholders. Other
analyses, when the simulation system has been used on stakeholders’ initiatives, include
source apportionment, natural flows, accumulated retention, and downstream effects of
status improvements. The model is linked to a biogeochemical coastal model to
estimate the effect on eutrophication in the coastal zone from land-based measures
to reduce nutrients. To judge model credibility for scenario estimates the internal
processes, model variables, turn-over times and path-ways are continuously being
evaluated. At present, the model is also being set-up for the European continent to
deliver water and nutrients to oceanographers and marine biologists for analysis in
the surrounding seas. The presentation at EGU will focus on the S-HYPE model
contribution to WFD and water authorities in Sweden, scientific evaluations of its
predictive power, and the role of national institutes when bridging between science and
practitioners. Finally, further scientific needs are identified for efficient water management. |
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