DOI: 10.1007/s00382-013-1692-1
Scopus记录号: 2-s2.0-84895000775
论文题名: Potential role of winter rainfall in explaining increased moisture in the Mediterranean and Middle East during periods of maximum orbitally-forced insolation seasonality
作者: Kutzbach J.E. ; Chen G. ; Cheng H. ; Edwards R.L. ; Liu Z.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 42, 期: 2017-03-04 起始页码: 1079
结束页码: 1095
语种: 英语
英文关键词: Eurasian paleoclimate
; Milankovitch orbital cycles
; Paleoclimate
; Paleoclimate simulation
; Paleoclimatic records
; Speleothems
英文摘要: Precession-related forcing of seasonal insolation changes in the northern hemisphere (NH) alternates between maximum NH seasonality (summer perihelion-increased insolation; winter aphelion-decreased insolation) and minimum NH seasonality (summer aphelion, and winter perihelion). With maximum NH seasonality, climate models simulate stronger NH summer monsoons that bring increased precipitation to North Africa and South and East Asia, in agreement with the in-phase relation of precipitation and NH summer insolation found in many paleoclimatic records. However paleoclimatic records in parts of the Mediterranean, the Middle East, and the interior of Asia also indicate increased moisture at times of maximum NH seasonality, a change not always clearly linked to stronger summer monsoons-either because these regions are at or beyond the boundaries of the present-day monsoon or because the observations allow multiple causal interpretations, or both. This study focuses on the possible role of changes in NH winter climate in explaining these wetter episodes. Using climate model simulations, we show that the 'NH winter aphelion-decreased NH winter insolation' orbital configuration is linked to the Mediterranean storm track and increased winter rains in the Mediterranean, the Middle East, and interior Asia. We conclude that wetter periods at precession time scales in these particular regions may have resulted either from increased wintertime storm track precipitation, or from a combination of increased winter and summer rainfall. Given this seasonal ambiguity, both possibilities need to be considered. © 2013 Springer-Verlag Berlin Heidelberg. 资助项目: NSF, National Science Foundation
; NSF, National Science Foundation
; NSF, National Science Foundation
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54310
Appears in Collections: 过去全球变化的重建
There are no files associated with this item.
作者单位: Center for Climatic Research, University of Wisconsin-Madison, 1225 W. Dayton St., Madison, WI, 53706, United States; Institute of Global Environmental Change, Xi'an Jiaotong University, 710049 Xi'an, China; Department of Earth Sciences, University of Minnesota, Minneapolis, MN, 55455, United States
Recommended Citation:
Kutzbach J.E.,Chen G.,Cheng H.,et al. Potential role of winter rainfall in explaining increased moisture in the Mediterranean and Middle East during periods of maximum orbitally-forced insolation seasonality[J]. Climate Dynamics,2014-01-01,42(2017-03-04)