Articles | Volume 27, issue 14
https://doi.org/10.5194/hess-27-2661-2023
https://doi.org/10.5194/hess-27-2661-2023
Research article
 | 
19 Jul 2023
Research article |  | 19 Jul 2023

Data worth analysis within a model-free data assimilation framework for soil moisture flow

Yakun Wang, Xiaolong Hu, Lijun Wang, Jinmin Li, Lin Lin, Kai Huang, and Liangsheng Shi

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Akhtar, K., Wang, W., Khan, A., Ren, G., Afridi, M. Z., Feng, Y., and Yang, G.: Wheat straw mulching offset soil moisture deficient for improving physiological and growth performance of summer sown soybean, Agric. Water Manage., 211, 16–25, https://doi.org/10.1016/j.agwat.2018.09.031, 2019. 
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Brajard, J., Carrassi, A., Bocquet, M., and Bertino, L.: Combining data assimilation and machine learning to emulate a dynamical model from sparse and noisy observations: A case study with the Lorenz 96 model, J. Comput. Sci., 44, 101171, https://doi.org/10.1016/j.jocs.2020.101171, 2020. 
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To avoid overloaded monitoring cost from redundant measurements, this study proposed a non-parametric data worth analysis framework to assess the worth of future soil moisture data regarding the model-free unsaturated flow models before data gathering. Results indicated that (1) the method can quantify the data worth of alternative monitoring schemes to obtain the optimal one, and (2) high-quality and representative small data could be a better choice than unfiltered big data.