DOI: 10.5194/cp-12-2077-2016
Scopus记录号: 2-s2.0-84996554714
论文题名: Modeling precipitation δ18O variability in East Asia since the Last Glacial Maximum: Temperature and amount effects across different timescales
作者: Wen X. ; Liu Z. ; Chen Z. ; Brady E. ; Noone D. ; Zhu Q. ; Guan J.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2016
卷: 12, 期: 11 起始页码: 2077
结束页码: 2085
语种: 英语
英文摘要: Water isotopes in precipitation have played a key role in the reconstruction of past climate on millennial timescales and longer. However, for midlatitude regions like East Asia with complex terrain, the reliability behind the basic assumptions of the temperature effect and amount effect is based on modern observational data and still remains unclear for past climate. In the present work, we reexamine the two basic effects on seasonal, interannual, and millennial timescales in a set of time slice experiments for the period 22-0 ka using an isotope-enabled atmospheric general circulation model (AGCM). Our study confirms the robustness of the temperature and amount effects on the seasonal cycle over China in the present climatic conditions, with the temperature effect dominating in northern China and the amount effect dominating in the far south of China but no distinct effect in the transition region of central China. However, our analysis shows that neither temperature nor amount effect is significantly dominant over China on millennial and interannual timescales, which is a challenge to those classic assumptions in past climate reconstruction. Our work helps shed light on the interpretation of the proxy record of δ 18O from a modeling point of view. © Author(s) 2016. 资助项目: DOE, U.S. Department of Energy
; NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48962
Appears in Collections: 气候变化与战略
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Recommended Citation:
Wen X.,Liu Z.,Chen Z.,et al. Modeling precipitation δ18O variability in East Asia since the Last Glacial Maximum: Temperature and amount effects across different timescales[J]. Climate of the Past,2016-01-01,12(11)