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Titolo:
Simulation of an abrupt change in Saharan vegetation in the mid-Holocene
Autore:
Claussen, M; Kubatzki, C; Brovkin, V; Ganopolski, A; Hoelzmann, P; Pachur, HJ;
Indirizzi:
Potsdam Inst Klimafolgenforsch, D-14412 Potsdam, Germany Potsdam Inst Klimafolgenforsch Potsdam Germany D-14412 Potsdam, Germany Max Planck Biogeochem, D-07745 Jena, Germany Max Planck Biogeochem Jena Germany D-07745 eochem, D-07745 Jena, Germany Free Univ Berlin, Inst Geog, D-1000 Berlin, Germany Free Univ Berlin Berlin Germany D-1000 Inst Geog, D-1000 Berlin, Germany Free Univ Berlin, Inst Meteorol, D-1000 Berlin, Germany Free Univ Berlin Berlin Germany D-1000 Meteorol, D-1000 Berlin, Germany
Titolo Testata:
GEOPHYSICAL RESEARCH LETTERS
fascicolo: 14, volume: 26, anno: 1999,
pagine: 2037 - 2040
SICI:
0094-8276(19990715)26:14<2037:SOAACI>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
NORTHERN AFRICA; CLIMATE; MIDHOLOCENE; BIOSPHERE; FEEDBACKS; MODEL; EURASIA; SYSTEM; BP;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Claussen, M Potsdam Inst Klimafolgenforsch, Postfach 601203, D-14412 Potsdam, Germany Potsdam Inst Klimafolgenforsch Postfach 601203 Potsdam GermanyD-14412
Citazione:
M. Claussen et al., "Simulation of an abrupt change in Saharan vegetation in the mid-Holocene", GEOPHYS R L, 26(14), 1999, pp. 2037-2040

Abstract

Climate variability during the present interglacial, the Holocene, has been rather smooth in comparison with the last glacial. Nevertheless, there were some rather abrupt climate changes. One of these changes, the desertification of the Saharan and Arabian region some 4 - 6 thousand years ago, was presumably quite important for human society. It could have been the stimulus leading to the foundation of civilizations along the Nile, Euphrat and Tigris rivers. Here we argue that Saharan and Arabian desertification was triggered by subtle variations in the Earth's orbit which were strongly amplified by atmosphere- vegetation feedbacks in the subtropics. The timing of this transition, however, was mainly governed by a global interplay between atmosphere, ocean, sea ice, and vegetation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 12:10:40