How long should the pre-existing climatic water balance be considered when capturing short-term wetness and dryness over China by using SPEI?

• Published in: The Science of the total environment Vol. 786; p. 147575
• Main Authors: Li, Xiuzhen, Huang, Wan-Ru
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 10.09.2021
• Subjects: China; Daily SPEIs; environment; evapotranspiration; Regional dependence; river valleys; Soil moisture; soil water; subsurface soil layers; Wetness and dryness; China; Regional dependence; Daily SPEIs; Wetness and dryness; Soil moisture; China

Short-term, fast-developing wet and dry anomalies have gained much attention, as their suddenness brings new challenges to monitoring. It is unclear how long a pre-existing climatic water surplus/deficit (defined as the difference between precipitation and potential evapotranspiration; P-PET) should...