DOI: 10.1016/j.epsl.2018.02.015
Scopus记录号: 2-s2.0-85042631642
论文题名: Influences of large-scale convection and moisture source on monthly precipitation isotope ratios observed in Thailand, Southeast Asia
作者: Wei Z. ; Lee X. ; Liu Z. ; Seeboonruang U. ; Koike M. ; Yoshimura K.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 488 起始页码: 181
结束页码: 192
语种: 英语
英文关键词: amount effect
; convection
; moisture source
; precipitation isotopes
; Southeast Asia
Scopus关键词: Atmospheric thermodynamics
; Heat convection
; Isotopes
; Moisture
; Process control
; Rain
; Amount effects
; Atmospheric circulation model
; Hydroclimatic variability
; Moisture sources
; Outgoing longwave radiation
; Paleoclimatic record
; Southeast Asia
; Western North Pacific
; Precipitation (meteorology)
; atmospheric circulation
; convection
; isotope
; moisture
; monsoon
; precipitation (climatology)
; rainfall
; regional climate
; Thailand
英文摘要: Many paleoclimatic records in Southeast Asia rely on rainfall isotope ratios as proxies for past hydroclimatic variability. However, the physical processes controlling modern rainfall isotopic behaviors in the region is poorly constrained. Here, we combined isotopic measurements at six sites across Thailand with an isotope-incorporated atmospheric circulation model (IsoGSM) and the Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model to investigate the factors that govern the variability of precipitation isotope ratios in this region. Results show that rainfall isotope ratios are both correlated with local rainfall amount and regional outgoing longwave radiation, suggesting that rainfall isotope ratios in this region are controlled not only by local rain amount (amount effect) but also by large-scale convection. As a transition zone between the Indian monsoon and the western North Pacific monsoon, the spatial difference of observed precipitation isotope among different sites are associated with moisture source. These results highlight the importance of regional processes in determining rainfall isotope ratios in the tropics and provide constraints on the interpretation of paleo-precipitation isotope records in the context of regional climate dynamics. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109995
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: School of Forestry and Environmental Studies, Yale University, New Haven, CT, United States; Yale-NUIST Center on Atmospheric Environment, Nanjing University of Information Science & Technology, Nanjing, Jiangsu, China; State Key Laboratory of Marine Geology, Tongji University, Shanghai, 200092, China; Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang, Thailand; Institute of Industrial Science, The University of Tokyo, Komaba, Tokyo, Japan; Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba, Japan
Recommended Citation:
Wei Z.,Lee X.,Liu Z.,et al. Influences of large-scale convection and moisture source on monthly precipitation isotope ratios observed in Thailand, Southeast Asia[J]. Earth and Planetary Science Letters,2018-01-01,488