Identification

Title

Optimizing wrf-hydroWRF-Hydro calibration in the Himalayan Basin: Precipitation influence and parameter sensitivity analysis

Abstract

The lack of in situ observations and reliable climate information in large parts of the Himalayas poses significant challenges for assessing water resources vulnerability. Integrated hydrometeorological modeling systems, like WRF-Hydro, have the potential to provide information in such ungauged or poorly observed regions, yet they require careful calibration. Here, we calibrate and assess the fidelity of WRF-Hydro in simulating the hydrological regime of the Beas basin. Selected WRF-Hydro model parameters are calibrated using the parameter estimation (PEST) framework, leveraging eight WRF-Hydro simulations with two meteorological forcings from two WRF realizations. Model calibration improves the accuracy of the basin discharge simulation; however, the choice of precipitation forcing is also found to be critically important. The performance of a given WRF-Hydro configuration varies with seasons. We thus propose an ensemble-weighting scheme to optimize an intra-annual trade-off between streamflow under- and overestimation in different WRF-Hydro configurations. This study demonstrates the efficacy of using WRF and WRF-Hydro for providing climate change impact–relevant information in data-sparse basins.

Resource type

document

Resource locator

Unique resource identifier

code

https://n2t.net/ark:/85065/d7nk3kfw

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

Text

originating controlled vocabulary

title

Resource Type

reference date

date type

publication

effective date

2016-01-01T00:00:00Z

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

End position

Dataset reference date

date type

publication

effective date

2025-03-01T00:00:00Z

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Limitations on public access

None

Responsible organisations

Responsible party

contact position

OpenSky Support

organisation name

UCAR/NCAR - Library

full postal address

PO Box 3000

Boulder

80307-3000

email address

opensky@ucar.edu

web address

http://opensky.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact