干旱区生态环境知识资源中心(Arid): Hydrological dynamics in the China-Mongolia arid region: An integrated analysis of precipitation recycling and water vapor conversion

Arid

DOI	10.1016/j.heliyon.2024.e32839
	Hydrological dynamics in the China-Mongolia arid region: An integrated analysis of precipitation recycling and water vapor conversion
	Li, Ruolin; Feng, Qi; Cui, Yang
通讯作者	Feng, Q
来源期刊	HELIYON
EISSN	2405-8440
出版年	2024
卷号	10 期号:12
英文摘要	This study examines the atmospheric water cycle dynamics in the China-Mongolia Arid Region (CMAR), a region significantly affected by aridity. By employing a combination of Empirical Orthogonal Function (EOF) analysis, ERA5 reanalysis data, and the Dynamic Recycling Model (DRM), we investigate the spatial and temporal variations in the Precipitation Recycling Ratio (PRR) and Precipitable Water Conversion Rate (PWCR) over a forty-year period (1979-2021). Our findings reveal that both PRR and PWCR are generally higher but decreasing in most subregions of CMAR, suggesting a notable contribution of local moisture to precipitation. We also identify an increasing trend in PRR across the northwestern subregions and a decreasing trend in other areas. Similarly, PWCR exhibits an increasing trend in the northwestern and southern subregions, while decreasing elsewhere, implying a decline in water vapor conversion and recycling efficiency. Furthermore, our EOF analysis uncovers distinct spatial patterns, with dominant modes accounting for significant variances in PRR and PWCR, correlating with local variations in atmospheric moisture and advective changes. These results underscore the complex interplay between regional topography, atmospheric dynamics, and the hydrological cycle in CMAR. The insights from this study are vital for formulating effective water management strategies and adapting to climate change impacts in arid regions, holding broad implications for environmental science, climate studies, and sustainable resource management. Our findings reveal distinct spatial patterns and contrasting trends in precipitation recycling and water vapor conversion across the subregions of CMAR. This heterogeneity underscores the importance of conducting analyses at finer spatial scales to avoid contradictory conclusions that can arise from topographic influences when treating CMAR as a single unit. Future studies should focus on smaller subregions to accurately capture the intricacies of the water cycle in this topographically complex arid region.
英文关键词	Precipitation recycling Water vapor conversion Empirical orthogonal functions China-Mongolia arid region (CMAR) Hydro-meteorological variability Dynamic recycling model (DRM)
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001254798300001
WOS关键词	ATMOSPHERIC RIVERS ; MOISTURE ; IMPACT ; VARIABILITY ; PATTERNS ; CLIMATE ; EVAPORATION ; REANALYSIS ; RAINFALL ; PLATEAU
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404037
推荐引用方式 GB/T 7714	Li, Ruolin,Feng, Qi,Cui, Yang. Hydrological dynamics in the China-Mongolia arid region: An integrated analysis of precipitation recycling and water vapor conversion[J],2024,10(12).
APA	Li, Ruolin,Feng, Qi,&Cui, Yang.(2024).Hydrological dynamics in the China-Mongolia arid region: An integrated analysis of precipitation recycling and water vapor conversion.HELIYON,10(12).
MLA	Li, Ruolin,et al."Hydrological dynamics in the China-Mongolia arid region: An integrated analysis of precipitation recycling and water vapor conversion".HELIYON 10.12(2024).