Models currently not in use (FyrisCOST, FyrisSKZ, SWE-model, TBV)

Page reviewed:  30/06/2025

Some of the models we have used are not developed anymore. Usually, they have been replaced by another model instead.

Old models or models currently not in use

FyrisCOST was a catchment scale decision support system (DSS) for the evaluation of alternative nutrient mitigation strategies. The model was able to evaluate a range of mitigation approaches for phosphorous (P) and nitogen (N) from point and diffuse sources. FyrisCOST also contained measures involving changes in land use, such as the construction of wetland areas in key positions. It allowed cost efficiency to be estimated for a catchment based on the combination of a wide range of measures.

FyrisSKZ was a national, web-based database of costs and effects of buffer-zones.

Read more about our current models ANLeC, distributed modelling at the catchment scale and ICECREAMDB.

References

Collentine, D., Johnsson, H., Larsson, P., Markensten H., Persson, K. 2015. Designing cost efficient buffer zone programs: An application of the FyrisSKZ tool in a Swedish catchment. AMBIO 44 (Suppl 2), 311–318.

The SWE-model (Soil-Water-Environment) was a process oriented, catchment-scale model intended for high-resolution (1-50 km2) evaluation of the effectiveness of mitigation measures on reducing or controlling nutrient losses. The SWE-model wa developed with the goal to identify hot-spots for nutrient leakage and describe the effect of different mitigation measures to reduce the nutrient losses. 

Read more about our current routines for distributed modelling at the catchment scale.

References

Hellgren, S., 2010. Tillämpning av en markprofilmodell för hydrologiska beräkningar i avrinningsområdesskala. UPTEC W10 034, ISSN 1401-5765, Examensarbete 30 hp. Institutionen för vatten och miljö, Sveriges lantbruksuniversitet 

TBV (Technical Calculation System Water) was developed within the consortium SMED to support Sweden's reporting to HELCOM and follow up the national environmental objective zero eutrophication.

With TBV estimated load from land to the sea was calculated as well as the source apportionment of nitrogen and phosphorus. In addition to load calculations TBV also stored and managed a large amount of data. TBV was developed and used within the consortium SMED consisting of IVL, SCB, SLU and SMHI and the development of TBV was financed by the Swedish Environmental Protection Agency and the Swedish Agency for Marine and Water Management.

TBV was used to compile Sweden's data for reporting to HELCOM under the Pollution Load Compilation (PLC). Apart from the PLC calculations, TBV was also used for calculations to follow-up the Swedish environmental target "Zero Eutrophication". The calculations were made on behalf of the Swedish Environmental Protection Agency and the Swedish Agency for Marine and Water Management.

From PLC8 is not TBV used anymore. The loads are instead calculated by the HYPE model and made available through Vattenwebb or the Vattenwebb archive. Input data and results from PLC8 are also made available at SMED Vatten's web page about PLC8 and by Swedish Agency for Marine and Water Management.

Some of the input data and results in terms of gross and net load to sea are available at SMED Vatten's web pages:

Note!
The calculations are made with different methods and can thus not be compared.

Before TBV was constructed did SLU and SMHI calculations for the TRK project (PLC) of the source apportionment for year 2000.

Our current models.

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