| DOI: | 10.1002/2016GL068600
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| 论文题名: | Drivers of δ2H variations in an idealized extratropical cyclone |
| 作者: | Dütsch M.; Pfahl S.; Wernli H.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9648
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| EISSN: | 1944-9379
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| 出版年: | 2016
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| 卷: | 43, 期:10 | | 起始页码: | 5401
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| 结束页码: | 5408
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| 语种: | 英语
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| 英文关键词: | extratropical cyclone
; numerical modeling
; stable water isotopes
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| Scopus关键词: | Numerical models
; Storms
; Atmospheric moisture
; Extratropical cyclones
; Horizontal advection
; Horizontal transport
; Isotopic fractionations
; Numerical model simulations
; Stable water isotopes
; Vertical transports
; Isotopes
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| 英文摘要: | Numerical model simulations of stable water isotopes help to improve our understanding of the complex processes driving isotopic variability in atmospheric moisture. We use the isotope-enabled Consortium for Small-Scale Modelling (COSMO) model to study the governing mechanisms of δ2H variations in an idealized extratropical cyclone. A set of experiments with differing initial conditions of δ2H in vapor and partly deactivated isotopic fractionation allows us to quantify the relative roles of cloud fractionation and vertical and horizontal advection for the simulated δ2H signals associated with the cyclone and fronts. Horizontal transport determines the large-scale pattern of δ2H in both vapor and precipitation, while fractionation and vertical transport are more important on a smaller scale, near the fronts. During the passage of the cold front fractionation leads to a V-shaped trend of δ2H in precipitation and vapor, which is, for vapor, superimposed on a gradual decrease caused by the arrival of colder air masses. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84969945356&doi=10.1002%2f2016GL068600&partnerID=40&md5=d329f6d9fea3b69d3c41157a466adbae
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/10611
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Institute for Atmospheric and Climate Science, ETH Zurich, Zurich, Switzerland
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| Recommended Citation: | |
Dütsch M.,Pfahl S.,Wernli H.. Drivers of δ2H variations in an idealized extratropical cyclone[J]. Geophysical Research Letters,2016-01-01,43(10).
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