DOI: 10.1002/2013GL058181
论文题名: Hydrogen and oxygen isotopic compositions of water vapor over the Bay of Bengal during monsoon
作者: Midhun M. ; Lekshmy P.R. ; Ramesh R.
刊名: Geophysical Research Letters
ISSN: 0094-8322
EISSN: 1944-8053
出版年: 2013
卷: 40, 期: 23 起始页码: 6324
结束页码: 6328
语种: 英语
英文关键词: d-excess in tropics
; water vapour isotopes
Scopus关键词: Distribution of water
; Isotopic composition
; Isotopic signatures
; Oxygen isotopic composition
; Sea surface temperature (SST)
; Temporal variation
; Vertical variation
; Water vapour
; Atmospheric movements
; Atmospheric temperature
; Atmospheric thermodynamics
; Deuterium
; Humidity control
; Rain
; Water vapor
; deuterium
; isotopic composition
; marine atmosphere
; monsoon
; oxygen isotope
; water vapor
; Bay of Bengal
; Indian Ocean
英文摘要: δDv and δ18Ov of ~70 water vapor samples collected at 6 and 25 m above sea level over the Bay of Bengal (BoB) during July-August 2012 are reported. This helps characterize the isotopic signature of monsoon vapor. No significant vertical variation is observed in δDv, δ18Ov, or deuterium excess (defined as δD-8δ18O); δDv and δ18Ov are significantly correlated (r = 0.92) at each height; the deuterium excess values do not, because the variation of δDv and δ18Ov relative to their uncertainties is much larger than that of the latter. The temporal variations of δDv and δ18Ov correlate well with air temperature rather than sea surface temperature. The control of normalized humidity on deuterium excess is less prominent. While the distribution of water vapor isotopologues over the BoB is primarily determined by the ocean surface conditions, they are significantly altered by laterally advected vapor from rain en route during the monsoon. Key Points Demonstration of deviation from Model values on rainy spells over ocean Relations between the ocean surface condition and isotopic composition of vapor Influence of rain along the parcel trajectory on isotopic composition of vapor ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84891595501&doi=10.1002%2f2013GL058181&partnerID=40&md5=b9dc2790a27f3bf3aba1134dd301414d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5586
Appears in Collections: 气候减缓与适应
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作者单位: Geosciences Division, Physical Research Laboratory, Ahmedabad, Gujarat 380009, India
Recommended Citation:
Midhun M.,Lekshmy P.R.,Ramesh R.. Hydrogen and oxygen isotopic compositions of water vapor over the Bay of Bengal during monsoon[J]. Geophysical Research Letters,2013-01-01,40(23).