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Article

Correction and Informed Regionalization of Precipitation Data in a High Mountainous Region (Upper Indus Basin) and Its Effect on SWAT-Modelled Discharge

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Department of Geohydraulics and Engineering Hydrology, University of Kassel, 34127 Kassel, Germany
2
Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, University Road, Abbottabad 22060, Pakistan
*
Author to whom correspondence should be addressed.
Water 2018, 10(11), 1557; https://doi.org/10.3390/w10111557
Received: 12 September 2018 / Revised: 27 October 2018 / Accepted: 30 October 2018 / Published: 1 November 2018
(This article belongs to the Section Hydrology)
The current study applied a new approach for the interpolation and regionalization of observed precipitation series to a smaller spatial scale (0.125° by 0.125° grid) across the Upper Indus Basin (UIB), with appropriate adjustments for the orographic effect and changes in glacier storage. The approach is evaluated and validated through reverse hydrology, and is guided by observed flows and the available knowledge base. More specifically, the generated corrected precipitation data is validated by means of SWAT-modelled responses of the observed flows to the different input precipitation series (original and corrected ones). The results show that the SWAT-simulated flows using the corrected, regionalized precipitation series as input are much more in line with the observed flows than those using the uncorrected observed precipitation input for which significant underestimations are obtained. View Full-Text
Keywords: precipitation estimation; orographic correction factor (OCF); water balance; glacier mass balance; SWAT-hydrological model; Upper Indus Basin (UIB); reverse hydrology precipitation estimation; orographic correction factor (OCF); water balance; glacier mass balance; SWAT-hydrological model; Upper Indus Basin (UIB); reverse hydrology
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MDPI and ACS Style

Khan, A.J.; Koch, M. Correction and Informed Regionalization of Precipitation Data in a High Mountainous Region (Upper Indus Basin) and Its Effect on SWAT-Modelled Discharge. Water 2018, 10, 1557. https://doi.org/10.3390/w10111557

AMA Style

Khan AJ, Koch M. Correction and Informed Regionalization of Precipitation Data in a High Mountainous Region (Upper Indus Basin) and Its Effect on SWAT-Modelled Discharge. Water. 2018; 10(11):1557. https://doi.org/10.3390/w10111557

Chicago/Turabian Style

Khan, Asim J., and Manfred Koch. 2018. "Correction and Informed Regionalization of Precipitation Data in a High Mountainous Region (Upper Indus Basin) and Its Effect on SWAT-Modelled Discharge" Water 10, no. 11: 1557. https://doi.org/10.3390/w10111557

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