气候变化领域集成服务门户(CCPortal): The Roles of Catchment Characteristics in Precipitation Partitioning Within the Budyko Framework

CCPortal

DOI	10.1029/2021JD035168
	The Roles of Catchment Characteristics in Precipitation Partitioning Within the Budyko Framework
	Liu J.; You Y.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:16
英文摘要	In the Budyko framework, the landscape parameter (n in the Choudhury-Yang equation) controls precipitation (P) partitioning to evapotranspiration (ET) and runoff (R). Systematically investigating the underlying influence of catchment characteristics on n is critical for understanding the partitioning of P. Using two runoff datasets with more than 30,000 stations around the world, we found that the variability in n was significantly correlated with a series of catchment characteristics, but varied across climate zones. Hence, several empirical models based on catchment characteristics were developed to estimate n for different climate zones. The developed empirical models applied to Budyko framework explained 92% of the spatial variability in the global mean R and provided more reasonable ET than that from Global Land Evaporation Amsterdam Model (GLEAM) in terms of long-term water and energy balances. Empirical models were further applied to predict and attribute future R under the high-end Shared Socioeconomic Pathways (SSP5-8.5). The changes in P, potential evaporation (PET), and n are projected to alter global R by 61.5%, −24.0%, and 14.5% during 2081–2100. Notably, compare with the historical period, the influence of n was reversed in arid zones under the future scenario, where n leads to a significant decrease in R. The developed empirical models n enhances the applicability and capability of the Budyko framework for both historical and future hydrological assessments over the globe. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	Budyko framework; catchment characteristics; landscape parameter; precipitation partitioning; runoff changes
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/237116
作者单位	Laboratory of Critical Zone Evolution, School of Geography and Information Engineering, China University of Geosciences, Wuhan, China; State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing, China
推荐引用方式 GB/T 7714	Liu J.,You Y.. The Roles of Catchment Characteristics in Precipitation Partitioning Within the Budyko Framework[J],2021,126(16).
APA	Liu J.,&You Y..(2021).The Roles of Catchment Characteristics in Precipitation Partitioning Within the Budyko Framework.Journal of Geophysical Research: Atmospheres,126(16).
MLA	Liu J.,et al."The Roles of Catchment Characteristics in Precipitation Partitioning Within the Budyko Framework".Journal of Geophysical Research: Atmospheres 126.16(2021).