Articles | Volume 26, issue 24
https://doi.org/10.5194/hess-26-6379-2022
https://doi.org/10.5194/hess-26-6379-2022
Research article
 | 
20 Dec 2022
Research article |  | 20 Dec 2022

Does non-stationarity induced by multiyear drought invalidate the paired-catchment method?

Yunfan Zhang, Lei Cheng, Lu Zhang, Shujing Qin, Liu Liu, Pan Liu, and Yanghe Liu

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Manuscript not accepted for further review
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Cited articles

Allen, P. M., Harmel, R. D., Dunbar, J. A., and Arnold, J. G.: Upland contribution of sediment and runoff during extreme drought: A study of the 1947–1956 drought in the Blackland Prairie, Texas, J. Hydrol., 407, 1–11, https://doi.org/10.1016/j.jhydrol.2011.04.039, 2011. 
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Short summary
Multiyear drought has been demonstrated to cause non-stationary rainfall–runoff relationship. But whether changes can invalidate the most fundamental method (i.e., paired-catchment method (PCM)) for separating vegetation change impacts is still unknown. Using paired-catchment data with 10-year drought, PCM is shown to still be reliable even in catchments with non-stationarity. A new framework is further proposed to separate impacts of two non-stationary drivers, using paired-catchment data.