HYPE Open Source Community (OSC)

HYPE OSC is an open source initiative under the Lesser GNU Public License taken by SMHI to strengthen international collaboration in hydrological modelling and hydrological data prodution. The hypothesis is that more brains and more testing will result in better models and better code.

The code will be transparent and can be changed and learnt from. It lies in the nature of an open source project to be highly modularized, which allows for parallel development of independent components. New versions of the main code will be delivered frequently.

The main objective of HYPE OSC is to provide public access to a state-of-the-art operational hydrological model while encouraging hydrologic expertise from different parts of the world to contribute to model improvement.

Who should join?

HYPE OSC is open to everyone interested in hydrology, hydrological modelling and code development – e.g. scientists, authorities, consultancies.

What's in it for you?

Sharing in a movement of modern hydrological programming, to provide tools for water assessments of the future. HYPE OSC offers the present HYPE model source code to start with. This will be a platform for international cooperation, networking, knowledge exchange and collective source code development.

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HYPE on the web - a Core Service for Hydrological Data

The Hydrological Predictions for the Environment (HYPE) model is a dynamic, semi-distributed, process-based, integrated catchment model. It uses well-known hydrological and nutrient transport concepts and can be applied for both small and large scale assessments of water resources and status.

In the model, the landscape is divided into classes according to soil type, vegetation and altitude. The soil representation is stratified and can be divided in up to three layers. Water and substances are routed through the same flow paths and storages (snow, soil, groundwater, streams, rivers, lakes) considering turn-over and transformation on the way towards the sea.

In Sweden, the model is used by water authorities to fulfil the Water Framework Directive and the Marine Strategy Framework Directive. It is used for charatcerization, forecasts, and scenario analyses.

Model data can be downloaded for free from three different HYPE applications:

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International workshop and HYPE Open Source Community Kick-off

The international workshop and kick-off for HYPE Open Source Community was held in Stockholm 23 November 2011. 50 eager participants from twelve different countries gathered to discuss how to build up a functional open source community in the hydrological modelling domain. Invited speakers presented their experiences from different kinds of common code development, data sharing and other collaborative forms.

HYPE experts presented the model and its features.

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HYPE scientific references

  • Arheimer, B., Dahné, J., Donnelly, C., Lindström, G., Strömqvist, J. 2011. Water and nutrient simulations using the HYPE model for Sweden vs. the Baltic Sea basin – influence of input-data quality and scale. Accepted for Hydrology Research
  • Arheimer, B., Dahné, J., Lindström, G. Marklund, L. and Strömqvist, J. 2011. Multi-variable evaluation of an integrated model system covering Sweden (S-HYPE). IAHS Publ. 345:145-150.
  • Arheimer, B., Wallman, P., Donnelly, C., Nyström, K. and Pers, C. 2011. E-HypeWeb: Service for Water and Climate Information – and Future Hydrological Collaboration across Europe? International Symposium on Environmental Software Systems (ISESS), IFIP Advances in Information and Communication Technology, Vol. 359.
  • Arheimer, B., Lindström, G., Pers, C., Rosberg, J. and Strömqvist, J. 2008. Development and test of a new Swedish water quality model for small-scale and large-scale applications. XXV Nordic Hydrological Conference, Reykjavik, August 11-13, 2008. NHP Report No. 50, pp. 483-492.
  • Donnelly, C., Strömqvist, J. and Arheimer, B. 2011. Modelling climate change effects on nutrient discharges from the Baltic Sea catchment: processes and results. IAHS Publ. 348:1-6.
  • Donnelly, C., Dahné, J., Strömqvist and Arheimer, B. 2010. Modelling Tools: From Sweden to Pan-European Scales for European WFD Data Requirements. Proceedings BALWOIS conference on Water Informaion and Observation Systems, May 2010, Macedonia.
  • Donnelly, C., Dahné. J., Rosberg, J., Strömqvist, J., Yang, W. and Arheimer, B. 2010. High-resolution, large-scale hydrological modelling tools for Europe. IAHS Publ. 340:553-561.
  • Donnelly, C., Dahné, J., Lindström, G., Rosberg, J., Strömqvist, J., Pers, C., Yang, W. and Arheimer, B. 2009. An evaluation of multi-basin hydrological modelling for predictions in ungauged basins. IAHS publ. 333:112-120.
  • Lindström, G., Pers, C.P., Rosberg, R., Strömqvist, J., Arheimer, B. 2010. Development and test of the HYPE (Hydrological Predictions for the Environment) model – A water quality model for different spatial scales. Hydrology Research 41.3-4:295-319.
  • Strömqvist, J., Arheimer, B., Dahné, J., Donnelly, C. and Lindström, G. 2011. Water and nutrient predictions in ungauged basins – Set-up and evaluation of a model at the national scale. Accepted for Hydrological Sciences Journal
  • Strömqvist, J., Dahné, J., Donnelly, C., Lindström, G., Rosberg, J., Pers, C., Yang, W., and Arheimer, B. 2009. Using recently developed global data sets for hydrological predictions. IAHS publ. 333:121-127.
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