干旱区生态环境知识资源中心(Arid): Drivers of drought-induced shifts in the water balance through a Budyko approach

Arid

DOI	10.5194/hess-26-589-2022
	Drivers of drought-induced shifts in the water balance through a Budyko approach
	Maurer, Tessa; Avanzi, Francesco; Glaser, Steven D.; Bales, Roger C.
通讯作者	Maurer, T (corresponding author)，Blue Forest Conservat, Sacramento, CA 95818 USA. ; Maurer, T (corresponding author)，Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA.
来源期刊	HYDROLOGY AND EARTH SYSTEM SCIENCES
ISSN	1027-5606
EISSN	1607-7938
出版年	2022
卷号	26 期号:3 页码:589-607
英文摘要	An inconsistent relationship between precipitation and runoff has been observed between drought and non-drought periods, with less runoff usually observed during droughts than would be expected based solely on precipitation deficit. Predictability of these shifts in the precipitation-runoff relationship is still challenging, largely because the underlying hydrologic mechanisms are poorly constrained. Using 30 years of data for 14 basins in California, we show how the Budyko framework can be leveraged to decompose shifts in precipitation versus runoff during droughts into regime shifts, which result from changes in the aridity index along the same Budyko curve, and partitioning shifts, which imply a change in the Budyko parameter omega and thus in the relationship among water balance components that governs partitioning of available water. Regime shifts are primarily due to measurable interannual changes in precipitation or temperature, making them predictable based on drought conditions. Partitioning shifts involve further nonlinear and indirect catchment feedbacks to drought conditions and are thus harder to predict a priori. We show that regime shifts dominate changes in absolute runoff during droughts but that gains or losses due to partitioning shifts are still significant. Low aridity, high baseflow, a shift from snow to rain, and resilience of high-elevation runoff correlate with higher annual runoff during droughts than would be predicted by the precipitation-runoff ratio during non-drought years. Differentiating between these shifts in the precipitation-runoff relationship using a Budyko approach will help water resource managers, particularly in arid, drought-prone regions, to better project runoff magnitudes during droughts based on available climate data and, furthermore, understand under what circumstances and to what extent their forecasts may be less reliable due to nonlinear basin-climate feedbacks.
类型	Article
语种	英语
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000758097700001
WOS关键词	SIERRA-NEVADA ; TIME SCALES ; EVAPOTRANSPIRATION ; CLIMATE ; PRECIPITATION ; VEGETATION ; RUNOFF ; SNOW ; CALIFORNIA ; STREAMFLOW
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376323
作者单位	[Maurer, Tessa] Blue Forest Conservat, Sacramento, CA 95818 USA; [Maurer, Tessa; Glaser, Steven D.; Bales, Roger C.] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA; [Avanzi, Francesco] CIMA Res Fdn, Via Armando Magliotto 2, I-17100 Savona, Italy; [Bales, Roger C.] Univ Calif Merced, Sierra Nevada Res Inst, Merced, CA USA
推荐引用方式 GB/T 7714	Maurer, Tessa,Avanzi, Francesco,Glaser, Steven D.,et al. Drivers of drought-induced shifts in the water balance through a Budyko approach[J],2022,26(3):589-607.
APA	Maurer, Tessa,Avanzi, Francesco,Glaser, Steven D.,&Bales, Roger C..(2022).Drivers of drought-induced shifts in the water balance through a Budyko approach.HYDROLOGY AND EARTH SYSTEM SCIENCES,26(3),589-607.
MLA	Maurer, Tessa,et al."Drivers of drought-induced shifts in the water balance through a Budyko approach".HYDROLOGY AND EARTH SYSTEM SCIENCES 26.3(2022):589-607.