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- W4385458577 abstract "Abstract. Snow modeling is often hampered by the availability of input and calibration data, which can affect the choice of model complexity and its transferability. To address the trade-off between model parsimony and transferability, we present the Generalizable Empirical Model of Snow Accumulation and Melt (GEMS), a machine learning-based model that requires only daily precipitation, temperature or its daily diurnal cycle, and basic topographic features to simulate snow water equivalent. The model embeds a Support Vector Regression pretrained on a large dataset of daily observations from a diverse set of the Snowpack Telemetry Network (SNOTEL) stations in the United States. GEMS does not require any user calibration, except for the option to adjust the temperature threshold for rain-snow partitioning, though the model achieves robust simulation results with the default value. We validated the model with long term daily observations from numerous independent SNOTEL stations not included in the training and with data from reference stations of the Earth System Model-Snow Model Intercomparison Project. We demonstrate how the model advances large scale SWE modelling in regions with complex terrain that lack in-situ snow mass observations for calibration, such as the Pamir and Andes, by assessing the model`s ability to reproduce daily snow cover dynamics. Future model development should consider the effects of vegetation, improve simulation accuracy for shallow snow in warm locations at lower elevations and address wind-induced snow redistribution. Overall, GEMS provides a new approach for snow modeling that can be useful for hydro-climatic research and operational monitoring in regions where in-situ snow observations are scarce." @default.
- W4385458577 created "2023-08-02" @default.
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- W4385458577 date "2023-08-01" @default.
- W4385458577 modified "2023-10-15" @default.
- W4385458577 title "GEMS v1.0: Generalizable empirical model of snow accumulation and melt based on daily snow mass changes in response to climate and topographic drivers" @default.
- W4385458577 doi "https://doi.org/10.5194/gmd-2023-103" @default.
- W4385458577 hasPublicationYear "2023" @default.
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