Skip to main content
Log in

Bayesian Framework for Uncertainty Quantification and Bias Correction of Projected Streamflow in Climate Change Impact Assessment

  • Published:
Water Resources Management Aims and scope Submit manuscript

Abstract

The study focuses on the uncertainty quantification and bias correction of hydrological projections using Bayesian applications. The climate change impact assessment on streamflow has been done using Soil and Water Assessment Tool (SWAT) model in Bharathapuzha river basin, India. The uncertainty quantification has been done by using Generalised Likelihood Uncertainty Estimation (GLUE) algorithm and the ensemble spread in the streamflow projections is quantified as the total uncertainty. A Hierarchical Bayesian Algorithm is adopted in the current study to remove the systematic bias in the projections of extreme streamflow. The approach established a probabilistic correction to the projected streamflow based on the biases in daily scale hindcast streamflow simulations with the corresponding observed historical streamflow data. The procedure is applied to the ensemble streamflow predictions for the Bharathapuzha catchment and over 10 times reduction in RMSE is observed in the bias corrected streamflow. The skill of the procedure in correcting the streamflow across different terciles is studied using the concept of reliability and significant improvement is observed in the reliability of high and medium flow ranges. The average width of the ensemble streamflow simulation band for the period 2021–2030 is seen to reduce from 5560 cumec to 2188 cumec after the correction procedure is applied.

Highlight

  • The parametric uncertainty in the streamflow projection is accounted by calibrating the hydrological model using the GLUE procedure.

  • A Hierarchical Bayesian approach has been adopted for bias correction of the streamflow projections.

  • A higher reliability is observed in the bias-corrected streamflow, especially in high and medium flow ranges.

  • The average width of the ensemble streamflow simulation band has reduced from 5560 cumec to 2188 cumec after the bias correction.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6

Similar content being viewed by others

References

Download references

Funding

The current study is funded by the Department of Science and Technology, Government of India under the INSPIRE Faculty scheme [DST/INSPIRE/04/2015/000382].

Author information

Authors and Affiliations

Authors

Contributions

Both the authors contributed to the study conception and design. The development and implementation of the methodology, analysis of the results and draft of the manuscript was prepared by Jose George. The supervision of the study and finalization of the manuscript was done by Athira.

Corresponding author

Correspondence to P. Athira.

Ethics declarations

Competing Interests

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Additional information

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

George, J., Athira, P. Bayesian Framework for Uncertainty Quantification and Bias Correction of Projected Streamflow in Climate Change Impact Assessment. Water Resour Manage (2024). https://doi.org/10.1007/s11269-024-03876-y

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s11269-024-03876-y

Keywords

Navigation