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Article

On the Benefits of Bias Correction Techniques for Streamflow Simulation in Complex Terrain Catchments: A Case-Study for the Chitral River Basin in Pakistan

by
Muhammad Usman
1,†,
Rodrigo Manzanas
2,3,
Christopher E. Ndehedehe
4,*,
Burhan Ahmad
1,
Oluwafemi E. Adeyeri
5 and
Cornelius Dudzai
6
1
Research and Development Division, Pakistan Meteorological Department, Pitras Bukhari Road, H-8/2, Islamabad 44000, Pakistan
2
Departamento de Matemática Aplicada y Ciencias de la Computación (MACC), Universidad de Cantabria, 39005 Santander, Spain
3
Grupo de Meteorología y Computación, Unidad Asociada al CSIC, Universidad de Cantabria, 39005 Santander, Spain
4
Australian Rivers Institute and Griffith School of Environment & Science, Griffith University, Nathan, QLD 4111, Australia
5
Guy Carpenter Asia-Pacific Climate Impact Center, School of Energy and Environment, City University of Hong Kong, Kowloon, Hong Kong
6
School of Health and Society, University of Wollongong, Wollongong, NSW 2500, Australia
*
Author to whom correspondence should be addressed.
†
Current address: School of Engineering, Faculty of Science Engineering & Built Environment, Deakin University, 75 Pigdons Road, Geelong, VIC 3216, Australia.
Hydrology 2022, 9(11), 188; https://doi.org/10.3390/hydrology9110188
Submission received: 14 September 2022 / Revised: 15 October 2022 / Accepted: 19 October 2022 / Published: 24 October 2022
(This article belongs to the Special Issue Stochastic and Deterministic Modelling of Hydrologic Variables)
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Abstract

This work evaluates the suitability of linear scaling (LS) and empirical quantile mapping (EQM) bias correction methods to generate present and future hydrometeorological variables (precipitation, temperature, and streamflow) over the Chitral River Basin, in the Hindukush region of Pakistan. In particular, LS and EQM are applied to correct the high-resolution statistically downscaled dataset, NEX-GDDP, which comprises 21 state-of-the-art general circulation models (GCMs) from the coupled model intercomparison project phase 5 (CMIP5). Raw and bias-corrected NEX-GDDP simulations are used to force the (previously calibrated and validated) HBV-light hydrological model to generate long-term (up to 2100) streamflow projections over the catchment. Our results indicate that using the raw NEX-GDDP leads to substantial errors (as compared to observations) in the mean and extreme streamflow regimes. Nevertheless, the application of LS and EQM solves these problems, yielding much more realistic and plausible streamflow projections for the XXI century.
Keywords: streamflow; hydrological modeling; HBV; bias correction; linear scaling (LS); empirical quantile mapping (EQM); NEX-GDDP; Chitral River Basin; GCMs streamflow; hydrological modeling; HBV; bias correction; linear scaling (LS); empirical quantile mapping (EQM); NEX-GDDP; Chitral River Basin; GCMs

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MDPI and ACS Style

Usman, M.; Manzanas, R.; Ndehedehe, C.E.; Ahmad, B.; Adeyeri, O.E.; Dudzai, C. On the Benefits of Bias Correction Techniques for Streamflow Simulation in Complex Terrain Catchments: A Case-Study for the Chitral River Basin in Pakistan. Hydrology 2022, 9, 188. https://doi.org/10.3390/hydrology9110188

AMA Style

Usman M, Manzanas R, Ndehedehe CE, Ahmad B, Adeyeri OE, Dudzai C. On the Benefits of Bias Correction Techniques for Streamflow Simulation in Complex Terrain Catchments: A Case-Study for the Chitral River Basin in Pakistan. Hydrology. 2022; 9(11):188. https://doi.org/10.3390/hydrology9110188

Chicago/Turabian Style

Usman, Muhammad, Rodrigo Manzanas, Christopher E. Ndehedehe, Burhan Ahmad, Oluwafemi E. Adeyeri, and Cornelius Dudzai. 2022. "On the Benefits of Bias Correction Techniques for Streamflow Simulation in Complex Terrain Catchments: A Case-Study for the Chitral River Basin in Pakistan" Hydrology 9, no. 11: 188. https://doi.org/10.3390/hydrology9110188

APA Style

Usman, M., Manzanas, R., Ndehedehe, C. E., Ahmad, B., Adeyeri, O. E., & Dudzai, C. (2022). On the Benefits of Bias Correction Techniques for Streamflow Simulation in Complex Terrain Catchments: A Case-Study for the Chitral River Basin in Pakistan. Hydrology, 9(11), 188. https://doi.org/10.3390/hydrology9110188

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