Simulating glacier mass balance and its contribution to runoff in Northern Sweden

Mohammadi, Babak; Gao, Hongkai; Feng, Zhiying; Pilesjö, Petter; Cheraghalizadeh, Majid; Duan, Zheng

doi:10.1016/j.jhydrol.2023.129404

Cited by 18 publications

(1 citation statement)

References 80 publications

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“…Degree-Day glacier melt model is used to estimate glacier runoff and mass loss on a catchment scale due to its low data requirements, high performance and computational simplicity (Babak et al, 2023;Braithwaite, 1995;Hock, 2003). These models have demonstrated superior performance in large-scale analyses compared to simplified energy balance models (Kraaijenbrink et al, 2021;Luo et al, 2018; T A B L E 1 The monthly precipitation gradients in Tarim Basin's sub-basins (mm/100 m).…”

Section: Model Descriptionmentioning

confidence: 99%

Different patterns of changes in glacier mass balance and glacier runoff over the Tarim Basin, Central Asia

Xu,

Wang,

et al. 2023

Hydrological Processes

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The climate change impacted glacio‐hydrological regime and thus the availability of water resources in arid region of Central Asia. The effects of climate change in the magnitude or seasonality of regional glacier runoff were still poorly understood in Central Asia. In this study, the glacier runoff, components of glacier runoff, equilibrium line altitude (ELA) and Glacier Mass Balance (GMB) during 1959–2017 are evaluated by elevation‐dependent Degree‐Day glacier melt model in eight sub‐basins of Tarim Basin over Central Asia. The impacts of climate change on glacier and hydrology are assessed. The results suggested that climatic regime shifted to more warm‐wet pattern on glacier zone after 1990 in study area. The ablation and accumulation of glaciers showed different patterns in eight sub‐basins. All sub‐basins showed a glacier mass deficit and GMB displayed a marked decreasing trend, but also exhibiting discrepancy. The mean ELA and rising rate of ELA were higher in the southern region. The glacier runoff increased significantly after 1990 in Tarim Basin, with obviously temporal and spatial variations in sub‐basins. The mean annual volume of glacier runoff was 175.8 × 108 m3. The ice melt was a larger component of glacial runoff in Tarim Basin. The influence of rainfall runoff on glacier runoff was more obviously than snow melt runoff as more precipitation fell as rain in northern region. The larger proportions of snow melt runoff imply more precipitation fell as snowfall in southern region. The elevation‐dependent contributions in glacier runoff showed differences in individual basins. Temperature and precipitation played different role for the glacier runoff increases among the sub‐basins. Differences in sensitivity of GMB and glacier runoff were distinct and vary considerably. A thorough assessment of the spatially and temporally varying melt water originated by glaciers is crucial for the success of water scarcity adaptation under climate change.

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Section: Model Descriptionmentioning

confidence: 99%

Different patterns of changes in glacier mass balance and glacier runoff over the Tarim Basin, Central Asia

Xu,

Wang,

et al. 2023

Hydrological Processes

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A stochastic deep-learning-based approach for improved streamflow simulation

Dolatabadi,

Zahraie

2023

Stoch Environ Res Risk Assess

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Improving glacio-hydrological model calibration and model performance in cold regions using satellite snow cover data

Mohammadi,

Gao,

Pilesjö

et al. 2024

Appl Water Sci

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Hydrological modeling realism is a central research question in hydrological studies. However, it is still a common practice to calibrate hydrological models using streamflow as a single hydrological variable, which can lead to large parameter uncertainty in hydrological simulations. To address this issue, this study employed a multi-variable calibration framework to reduce parameter uncertainty in a glacierized catchment. The current study employed multi-variable calibration using three different calibration schemes to calibrate a glacio-hydrological model (namely the FLEXG) in northern Sweden. The schemes included using only gauged streamflow data (scheme 1), using satellite snow cover area (SCA) derived from MODIS data (scheme 2), and using both gauged streamflow data and satellite SCA data as references for calibration (scheme 3) of the FLEXG model. This study integrated the objective functions of satellite-derived SCA and gauged streamflow into one criterion for the FLEXG model calibration using a weight-based approach. Our results showed that calibrating the FLEXG model based on solely satellite SCA data (from MODIS) produced an accurate simulation of SCA but poor simulation of streamflow. In contrast, calibrating the FLEXG model based on the measured streamflow data resulted in minimum error for streamflow simulation but high error for SCA simulation. The promising results were achieved for glacio-hydrological simulation with acceptable accuracy for simulation of both streamflow and SCA, when both streamflow and SCA data were used for calibration of FLEXG. Therefore, multi-variable calibration in a glacierized basin could provide more realistic hydrological modeling in terms of multiple glacio-hydrological variables.

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Simulating glacier mass balance and its contribution to runoff in Northern Sweden

Cited by 18 publications

References 80 publications

Different patterns of changes in glacier mass balance and glacier runoff over the Tarim Basin, Central Asia

Different patterns of changes in glacier mass balance and glacier runoff over the Tarim Basin, Central Asia

A stochastic deep-learning-based approach for improved streamflow simulation

Improving glacio-hydrological model calibration and model performance in cold regions using satellite snow cover data

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