| DOI: | 10.1002/2015GL064117
|
| 论文题名: | D/H isotope ratios in the global hydrologic cycle |
| 作者: | Good S.P.; Noone D.; Kurita N.; Benetti M.; Bowen G.J.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-8658
|
| EISSN: | 1944-8389
|
| 出版年: | 2015
|
| 卷: | 42, 期:12 | | 起始页码: | 5042
|
| 结束页码: | 5050
|
| 语种: | 英语
|
| 英文关键词: | closure assumption
; HDO budget
; mass balance
; TES
|
| Scopus关键词: | Earth (planet)
; Evapotranspiration
; Hydrology
; Isotopes
; Runoff
; Atmospheric surface layers
; Closure assumptions
; HDO budget
; Mass balance
; Terrestrial evapotranspiration
; TES
; Tropospheric emissions
; Vapor pressure deficit
; Budget control
; concentration (composition)
; deuterium
; error correction
; evapotranspiration
; global perspective
; hydrological cycle
; isotopic composition
; marine atmosphere
; mass balance
; precipitation (climatology)
; runoff
; satellite data
; tracer
; troposphere
; uncertainty analysis
|
| 英文摘要: | Deuterium to hydrogen (D/H) ratios in Earth's hydrologic cycle have long served as important tracers of climate processes, yet the global HDO budget remains poorly constrained because of uncertainties in the isotopic compositions of continental evapotranspiration and runoff. Here bias-corrected satellite retrievals of HDO and H2O concentrations from the Tropospheric Emissions Spectrometer are used to estimate the marine atmospheric surface layer HDO vapor pressure deficit, from which we calculate the global flux-weighted average oceanic evaporation isotopic composition as -37.6‰. Using these estimates, combined with D/H ratios in precipitation, global mass balance suggests H isotope compositions for global runoff and terrestrial evapotranspiration of -77.3‰ and -40.0‰, respectively. By resolving the HDO budget, we establish an accurate global baseline for geochemically enabled Earth system models, demonstrate patterns in entrainment of moisture into the marine surface layer, and determine the isotopic composition of continental fluxes critical for global ecohydrologic investigations. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84948714301&doi=10.1002%2f2015GL064117&partnerID=40&md5=b295e547685e478ed3c5bad7110dcce1
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8274
|
| Appears in Collections: | 科学计划与规划
气候变化与战略
|
|
There are no files associated with this item.
|
|
作者单位: | Department of Geology and Geophysics, University of Utah, Salt Lake City, UT, United States
|
| Recommended Citation: | |
Good S.P.,Noone D.,Kurita N.,et al. D/H isotope ratios in the global hydrologic cycle[J]. Geophysical Research Letters,2015-01-01,42(12).
|
|
|