Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019WR025181 |
A Global Perspective on Local Meteoric Water Lines: Meta-analytic Insight Into Fundamental Controls and Practical Constraints | |
Putman, Annie L.1,2; Fiorella, Richard P.1; Bowen, Gabriel J.1,2; Cai, Zhongyin3 | |
2019-08-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:8页码:6896-6910 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China |
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. |
领域 | 资源环境 |
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 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/185871 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Utah, Dept Geol & Geophys, Salt Lake City, UT 84112 USA; 2.Univ Utah, Global Change & Sustainabil Ctr, Salt Lake City, UT 84112 USA; 3.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]. WATER RESOURCES RESEARCH,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. |
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