干旱区生态环境知识资源中心(Arid): A Global Perspective on Local Meteoric Water Lines: Meta-analytic Insight Into Fundamental Controls and Practical Constraints

Arid

DOI	10.1029/2019WR025181
	A Global Perspective on Local Meteoric Water Lines: Meta-analytic Insight Into Fundamental Controls and Practical Constraints
	Putman, Annie L.; Fiorella, Richard P.; Bowen, Gabriel J.; Cai, Zhongyin
通讯作者	Putman, AL (corresponding author), Univ Utah, Dept Geol & Geophys, Salt Lake City, UT 84112 USA. ; Putman, AL (corresponding author), Univ Utah, Global Change & Sustainabil Ctr, Salt Lake City, UT 84112 USA.
来源期刊	WATER RESOURCES RESEARCH
ISSN	0043-1397
EISSN	1944-7973
出版年	2019
卷号	55 期号:8 页码:6896-6910
英文摘要	Local meteoric water lines (LMWLs) represent the site-specific long-term covariation of hydrogen and oxygen stable isotope ratios. LMWLs have practical utility as a hydrologic framework and as benchmarks for evaluating hydroclimatic processes in isotope-enabled climate models. In this manuscript, we characterize the global distribution of LMWLs and compare them to LMWLs from model data. To evaluate the sensitivity of the covariance of stable isotope ratios to data set length, we paired time series rarifaction with Bayesian ellipse estimation. We then applied a threshold of 48 months and estimated LMWLs at 398 sites in 25 Koppen climate classes using orthogonal distance regression. Slopes ranged from 4.8 to 10.9, with an average of 7.64 +/- 0.64. Intercepts ranged from -24 parts per thousand to 27 parts per thousand, with an average of 6.85 +/- 6.2 parts per thousand. We identified three processes: (1) subcloud evaporation of rain, (2) atmospheric remoistening by rainfall evaporation, and (3) conditions of snow formation as important controls on slopes and intercepts in arid, humid, and seasonally snowy regions, respectively. We compared observational LMWLs with those from a suite of isotope-enabled climate models. At arid and snowy sites, model data produced higher slopes and intercepts than observational data. At humid sites, model data exhibited dampened variability in slopes and intercepts relative to observational data. These results indicate potential for improvement in the precipitation and/or isotope parameterizations of raindrop evaporation, advection of reevaporated water, evapotranspiration fractionation, and supersaturation in mixed-phase clouds. This meta-analysis demonstrates LMWLs utility for identifying specific hydroclimatic and isotopic processes in observations and models.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000490973700031
WOS关键词	ARID CENTRAL-ASIA ; STABLE-ISOTOPES ; DEUTERIUM EXCESS ; PRECIPITATION ; EVAPORATION ; FRACTIONATION ; RAINFALL ; GROUNDWATER ; ATMOSPHERE ; HYDROGEN
WOS类目	Environmental Sciences ; Limnology ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369697
作者单位	[Putman, Annie L.; Fiorella, Richard P.; Bowen, Gabriel J.] Univ Utah, Dept Geol & Geophys, Salt Lake City, UT 84112 USA; [Putman, Annie L.; Bowen, Gabriel J.] Univ Utah, Global Change & Sustainabil Ctr, Salt Lake City, UT 84112 USA; [Cai, Zhongyin] Yunnan Univ, Inst Int Rivers & Ecosecur, Kunming, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Putman, Annie L.,Fiorella, Richard P.,Bowen, Gabriel J.,et al. A Global Perspective on Local Meteoric Water Lines: Meta-analytic Insight Into Fundamental Controls and Practical Constraints[J],2019,55(8):6896-6910.
APA	Putman, Annie L.,Fiorella, Richard P.,Bowen, Gabriel J.,&Cai, Zhongyin.(2019).A Global Perspective on Local Meteoric Water Lines: Meta-analytic Insight Into Fundamental Controls and Practical Constraints.WATER RESOURCES RESEARCH,55(8),6896-6910.
MLA	Putman, Annie L.,et al."A Global Perspective on Local Meteoric Water Lines: Meta-analytic Insight Into Fundamental Controls and Practical Constraints".WATER RESOURCES RESEARCH 55.8(2019):6896-6910.