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  "description": "This HydroShare Resorce provides the scripts for data retrievel and processing, model running and postanalysis, and figure creation for the manuscript under review by JOH. The abstract of the manuscript is as follows: Seasonal soil freezing and thawing processes significantly influence runoff generation dynamics during cold periods, affecting various hydrological and agricultural systems, including flood generation, soil erosion, and plant health. Representing frozen soil conditions in land surface or hydrological models is therefore crucial. While fully distributed models implement the process by solving energy-mass balance equations to obtain soil temperature profiles, parsimonious models using \u201csnow tanks\u201d or frozen ground states can provide suitable modeling solutions with reduced computational demands. However, even these parsimonious approaches to representing frozen ground typically require some additional complexity through additional inputs or surface energy balance calculations. This study evaluates the applicability of a simplified soil temperature prediction model that determines frozen/unfrozen ground states using only air temperature and snow cover data, reducing model complexity. We first validate the model performance using AmeriFlux network in-situ measurements across the United States and Canada. Furthermore, we provide a comprehensive assessment at the global scale with ERA5-LAND reanalysis data (1980-2020). The model demonstrates robust performance globally, achieving an average true frozen rate of 0.90 and false frozen rate of 0.06. We also investigate the model performance by month, and, while monthly analyses show drops in model performance for certain months, these lower scores are primarily due to the limited number of freeze-thaw events during these periods, which makes the model appear less accurate than it actually is. In terms of spatial performance, the model shows reduced accuracy in mountainous regions, including the Tibetan Plateau, Rocky Mountains, and Andes, suggesting the need for region-specific parameter calibration in orographic settings. Nevertheless, this parsimonious soil temperature model demonstrates significant potential as a computationally efficient solution for incorporating frozen ground effects in distributed hydrological models with simple conceptual runoff generation schemes.",
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      "email": "donghui3@illinois.edu",
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        "name": "Princeton University"
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      "name": "Li, Donghui"
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  "dateCreated": "2025-01-15 01:25:40.351789+00:00",
  "keywords": [
    "Frozen soil prediction",
    "Model validation",
    "Global assessment",
    "Land surface processes"
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  "dateModified": "2026-03-12 14:55:50.103556+00:00",
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      "funder": {
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        "url": "https://ror.org/00hx57361",
        "address": null,
        "name": "Princeton University"
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      "name": "Princeton University"
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  "citation": [
    "Li, D. (2026). Global Products for Cold-Region Hydrologic Modeling: Snow Accumulation, Snowmelt, and Frozen Ground Status Prediction, HydroShare, http://www.hydroshare.org/resource/eb6c57da63ec4742852d4583894aa9df"
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