DOI: 10.5194/cp-8-841-2012
Scopus记录号: 2-s2.0-84860251619
论文题名: Masked millennial-scale climate variations in South West Africa during the last glaciation
作者: Hessler I. ; Dupont L. ; Handiani D. ; Paul A. ; Merkel U. ; Wefer G.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2012
卷: 8, 期: 2 起始页码: 841
结束页码: 853
语种: 英语
Scopus关键词: climate variation
; community composition
; evaporation
; last glaciation
; moisture content
; paleoclimate
; palynology
; precipitation (climatology)
; tropical environment
; Africa
英文摘要: To address the connection between tropical African vegetation development and high-latitude climate change we present a high-resolution pollen record from ODP Site 1078 (off Angola) covering the period 50-10 ka BP. Although several tropical African vegetation and climate reconstructions indicate an impact of Heinrich Stadials (HSs) in Southern Hemisphere Africa, our vegetation record shows no response. Model simulations conducted with an Earth System Model of Intermediate Complexity including a dynamical vegetation component provide one possible explanation. Because both precipitation and evaporation increased during HSs and their effects nearly cancelled each other, there was a negligible change in moisture supply. Consequently, the resulting climatic response to HSs might have been too weak to noticeably affect the vegetation composition in the study area. Our results also show that the response to HSs in southern tropical Africa neither equals nor mirrors the response to abrupt climate change in northern Africa. © 2012 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49586
Appears in Collections: 气候变化与战略
There are no files associated with this item.
Recommended Citation:
Hessler I.,Dupont L.,Handiani D.,et al. Masked millennial-scale climate variations in South West Africa during the last glaciation[J]. Climate of the Past,2012-01-01,8(2)