globalchange  > 影响、适应和脆弱性
DOI: 10.1007/s00382-017-3948-7
Scopus记录号: 2-s2.0-85031927357
论文题名:
Unraveling the forcings controlling the vegetation and climate of the best orbital analogues for the present interglacial in SW Europe
作者: Oliveira D.; Desprat S.; Yin Q.; Naughton F.; Trigo R.; Rodrigues T.; Abrantes F.; Sánchez Goñi M.F.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 51, 期:2018-01-02
起始页码: 667
结束页码: 686
语种: 英语
英文关键词: CO2 ; Insolation ; Marine pollen analysis ; Mediterranean vegetation ; Model–data comparison ; Orbital Holocene analogues
Scopus关键词: climate variation ; Holocene ; insolation ; interglacial ; marine isotope stage ; paleoclimate ; palynology ; vegetation ; Iberian Peninsula
英文摘要: The suitability of MIS 11c and MIS 19c as analogues of our present interglacial and its natural evolution is still debated. Here we examine the regional expression of the Holocene and its orbital analogues over SW Iberia using a model–data comparison approach. Regional tree fraction and climate based on snapshot and transient experiments using the LOVECLIM model are evaluated against the terrestrial–marine profiles from Site U1385 documenting the regional vegetation and climatic changes. The pollen-based reconstructions show a larger forest optimum during the Holocene compared to MIS 11c and MIS 19c, putting into question their analogy in SW Europe. Pollen-based and model results indicate reduced MIS 11c forest cover compared to the Holocene primarily driven by lower winter precipitation, which is critical for Mediterranean forest development. Decreased precipitation was possibly induced by the amplified MIS 11c latitudinal insolation and temperature gradient that shifted the westerlies northwards. In contrast, the reconstructed lower forest optimum at MIS 19c is not reproduced by the simulations probably due to the lack of Eurasian ice sheets and its related feedbacks in the model. Transient experiments with time-varying insolation and CO2 reveal that the SW Iberian forest dynamics over the interglacials are mostly coupled to changes in winter precipitation mainly controlled by precession, CO2 playing a negligible role. Model simulations reproduce the observed persistent vegetation changes at millennial time scales in SW Iberia and the strong forest reductions marking the end of the interglacial “optimum”. © 2017, Springer-Verlag GmbH Germany.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109225
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: EPHE, PSL Research University, Pessac, 33615, France; Laboratoire Paléoclimatologie et Paléoenvironnements Marins, University of Bordeaux, EPOC, UMR 5805, Pessac, 33615, France; Divisão de Geologia e Georecursos Marinhos, Instituto Português do Mar e da Atmosfera (IPMA), Avenida de Brasília 6, Lisboa, 1449-006, Portugal; CCMAR, Centro de Ciências do Mar, Universidade do Algarve, Campus de Gambelas, Faro, 8005-139, Portugal; Georges Lemaître Center for Earth and Climate Research, Earth and Life Institute, Université catholique de Louvain, Louvain-la-Neuve, Belgium; Instituto Dom Luiz, Universidade de Lisboa, Lisboa, 1749-016, Portugal

Recommended Citation:
Oliveira D.,Desprat S.,Yin Q.,et al. Unraveling the forcings controlling the vegetation and climate of the best orbital analogues for the present interglacial in SW Europe[J]. Climate Dynamics,2018-01-01,51(2018-01-02)
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