DOI: 10.1016/j.atmosenv.2015.02.062
Scopus记录号: 2-s2.0-84924082493
论文题名: Monsoon onset signal in the stable oxygen and hydrogen isotope ratios of monsoon vapor
作者: Srivastava R ; , Ramesh R ; , Gandhi N ; , Jani R ; A ; , Singh A ; K
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 108 起始页码: 117
结束页码: 124
语种: 英语
英文关键词: Atmospheric water vapor
; Isotopic fractionation
; Monsoon
; Stable isotopes
Scopus关键词: Deuterium
; Hydrogen
; Isotopes
; Moisture
; Oxygen
; Precipitation (meteorology)
; Rain
; Water vapor
; Atmospheric water vapor
; Global precipitation
; Hydrogen isotopic composition
; Hydrological process
; Isotopic fractionations
; Monsoon
; Stable isotopes
; Stable oxygen and hydrogen isotopes
; Atmospheric thermodynamics
; deuterium
; hydrogen
; liquid nitrogen
; oxygen
; oxygen 18
; rain
; deuterium
; hydrogen isotope
; isotopic composition
; isotopic fractionation
; monsoon
; noise
; oxygen isotope
; precipitation (climatology)
; satellite imagery
; signal
; stable isotope
; vapor pressure
; water vapor
; air temperature
; ambient air
; Article
; atmospheric moisture
; high temperature
; humidity
; India
; Indian Ocean
; moisture
; precipitation
; priority journal
; season
; seasonal variation
; water vapor
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Whereas data on deuterium (D) and oxygen (18O), effective tracers of hydrological processes, are available for global precipitation, such data on atmospheric water vapor are limited. With the advent of satellites capable of measuring D in atmospheric water vapor, mesoscale moisture transport processes (e.g. monsoons) could be detected early provided the signal is well above the noise. Our results of daily measurements of stable oxygen and hydrogen isotopic compositions of atmospheric water vapor (δ18Ovapor, δDvapor) and rain (δ18Orain, δDrain) during 2007-2008 CE over Ahmedabad, India, show that this is indeed so: (i) the onset of monsoon is marked by a dramatic decrease of ~2.9‰ and ~60‰, in δ18Ovapor, δDvapor, respectively, and 46‰ in deuterium excess (δD - 8. δ18O) of local atmospheric water vapor (ii) δ18Ovapor, δDvapor, δ18Orain and δDrain exhibit correlated variations during the monsoon season (mid-June to mid-September): the daily variations of δ18Ovapor and δDvapor are higher during large rain events, with sharp negative excursions from mean values. Deuterium excess of vapor and rain are indistinguishable from each other, within their natural variability, consistent with the achievement of isotopic equilibrium between them. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81824
Appears in Collections: 气候变化事实与影响
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作者单位: Physical Research Laboratory, Navrangpura, Ahmedabad, India; Pandit Deendayal Petroleum University, Gandhinagar, India; Indian Institute of Tropical Meteorology, Pashan, Pune, India; Department of Geology, Delhi University, Delhi, India
Recommended Citation:
Srivastava R,, Ramesh R,, Gandhi N,et al. Monsoon onset signal in the stable oxygen and hydrogen isotope ratios of monsoon vapor[J]. Atmospheric Environment,2015-01-01,108