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Yang, Y., Zhang, S., Roderick, M. L., McVicar, T. R., Yang, D., Liu, W., and Li, X.: Comparing Palmer Drought Severity Index drought assessments using the traditional offline approach with direct climate model outputs, Hydrol. Earth Syst. Sci., 24, 2921–2930, https://doi.org/10.5194/hess-24-2921-2020, 2020.