 |
| Titel |
Masked millennial-scale climate variations in South West Africa during the last glaciation |
| VerfasserIn |
I. Hessler, L. Dupont, D. Handiani, A. Paul, U. Merkel, G. Wefer  |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1814-9324
|
| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 8, no. 2 ; Nr. 8, no. 2 (2012-04-24), S.841-853 |
| Datensatznummer |
250005488
|
| Publikation (Nr.) |
 copernicus.org/cp-8-841-2012.pdf |
|
|
|
|
|
| Zusammenfassung |
| 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. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|