Continental Hydrologic Intercomparison Project, Phase 1: A Large‐Scale Hydrologic Model Comparison Over the Continental United States
Continental Hydrologic Intercomparison Project, Phase 1: A Large‐Scale Hydrologic Model Comparison Over the Continental United States
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DOI：
10.1029/2020wr028931
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发表时间：
2021-06
影响因子：
5.4
通讯作者：
D. Tijerina;L. Condon;Katelyn FitzGerald;A. Dugger;M. O'Neill;K. Sampson;D. Gochis;R. Maxwell
中科院分区：
文献类型：
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作者：
D. Tijerina;L. Condon;Katelyn FitzGerald;A. Dugger;M. O'Neill;K. Sampson;D. Gochis;R. Maxwell
高分辨率、耦合的、基于过程的水文模型，其中地下、地表和能量收支过程被代表，已被应用于流域尺度，以提出广泛的水科学问题。最近，这些模型已经在大陆尺度上开发，并应用于业务洪水预报，水文预测和过程表示。随着大规模模型配置使用的增加，拥有一种通用的性能评估和验证方法是非常重要的，特别是考虑到与准确表示大型域相关的挑战。在这里，我们介绍了大陆尺度，高分辨率，基于处理的水文模型比较项目的第一阶段，名为大陆水文相互比较项目（CHIP）。CHIP的第一阶段是基于过去的地球系统模型相互比较，包括两个模型的概念验证，比较ParFlow‐CONUS水文模型版本1.0和WRF‐Hydro的NOAA美国国家水模型配置版本1.2。CHIP第1阶段的目标是：（a）描述模型物理和组件，（B）设计一个实验，以确保公平的比较，和（B）评估模拟径流与观测，以更好地了解模型偏差。据我们所知，这是第一次比较大陆规模的，高分辨率的，基于物理的模型，其中包括横向地下流。该模型相互比较是持续努力解决当前大尺度水文模型中的过程、参数和公式差异的第一步，并使水文界参与改进水文模型配置和过程表示。
High‐resolution, coupled, process‐based hydrology models, in which subsurface, land‐surface, and energy budget processes are represented, have been applied at the basin‐scale to ask a wide range of water science questions. Recently, these models have been developed at continental scales with applications in operational flood forecasting, hydrologic prediction, and process representation. As use of large‐scale model configurations increases, it is exceedingly important to have a common method for performance evaluation and validation, particularly given challenges associated with accurately representing large domains. Here, we present phase 1 of a comparison project for continental‐scale, high‐resolution, processed‐based hydrologic models entitled the Continental Hydrologic Intercomparison Project (CHIP). The first phase of CHIP is based on past Earth System Model intercomparisons and comprised of a two‐model proof of concept comparing the ParFlow‐CONUS hydrologic model, version 1.0 and a NOAA US National Water Model configuration of WRF‐Hydro, version 1.2. The objectives of CHIP phase 1 are: (a) describe model physics and components, (b) design an experiment to ensure a fair comparison, and (b) assess simulated streamflow with observations to better understand model bias. To our knowledge, this is the first comparison of continental‐scale, high‐resolution, physics‐based models which incorporate lateral subsurface flow. This model intercomparison is an initial step toward a continued effort to unravel process, parameter, and formulation differences in current large‐scale hydrologic models and to engage the hydrology community in improving hydrology model configuration and process representation.