Abstract
An analytical expression for subgrid–scale inhomogeneous runoff ratios generated by heterogeneous soil moisture content and climatic precipitation forcing is presented based on physical mechanisms for land surface hydrology and theory of statistical probability distribution. Thereby the commonly used mosaic parameterization of subgrid runoff ratio was integrated into a statistical–dynamic scheme with the bulk heterogeneity of a grid area included. Furthermore, a series of numerical experiments evaluating the reliability of the parameterization were conducted using the data generated by the emulated simulation method. All the experimental results demonstrate that the proposed scheme is feasible and practical.
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This work is supported jointly by the Major-Subject Program of the National Natural Science Foundation of China (Grant No.49899270) and the National Key Basic Research of China (G1998040911).
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**gmiao, L., Yuguo, D., **uji, Z. et al. Land surface hydrology parameterization over heterogeneous surface for the study of regional mean runoff ratio with its simulations. Adv. Atmos. Sci. 19, 89–102 (2002). https://doi.org/10.1007/s00376-002-0036-6
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DOI: https://doi.org/10.1007/s00376-002-0036-6