globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-012-1297-0
Scopus记录号: 2-s2.0-84869491710
论文题名:
The role of forcing and internal dynamics in explaining the "Medieval Climate Anomaly"
作者: Goosse H.; Crespin E.; Dubinkina S.; Loutre M.-F.; Mann M.E.; Renssen H.; Sallaz-Damaz Y.; Shindell D.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 39, 期:12
起始页码: 2847
结束页码: 2866
语种: 英语
英文关键词: Atmospheric and ocean dynamics ; Climate modelling ; Data assimilation ; Last millennium ; Medieval Climate Anomaly ; Paleoclimate ; Radiative forcing
英文摘要: Proxy reconstructions suggest that peak global temperature during the past warm interval known as the Medieval Climate Anomaly (MCA, roughly 950-1250 AD) has been exceeded only during the most recent decades. To better understand the origin of this warm period, we use model simulations constrained by data assimilation establishing the spatial pattern of temperature changes that is most consistent with forcing estimates, model physics and the empirical information contained in paleoclimate proxy records. These numerical experiments demonstrate that the reconstructed spatial temperature pattern of the MCA can be explained by a simple thermodynamical response of the climate system to relatively weak changes in radiative forcing combined with a modification of the atmospheric circulation, displaying some similarities with the positive phase of the so-called Arctic Oscillation, and with northward shifts in the position of the Gulf Stream and Kuroshio currents. The mechanisms underlying the MCA are thus quite different from anthropogenic mechanisms responsible for modern global warming. © 2012 Springer-Verlag.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55096
Appears in Collections:过去全球变化的重建

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作者单位: Earth and Life Institute, Georges Lemaître Centre for Earth and Climate Research, Université Catholique de Louvain, Chemin du Cyclotron, 2, 1348 Louvain-la-Neuve, Belgium; Department of Meteorology and Earth and Environmental Systems Institute, Pennsylvania State University, University Park, PA, United States; Section Climate Change and Landscape Dynamics, Department of Earth Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands; NASA Goddard Institute for Space Studies, New York City, NY, United States

Recommended Citation:
Goosse H.,Crespin E.,Dubinkina S.,et al. The role of forcing and internal dynamics in explaining the "Medieval Climate Anomaly"[J]. Climate Dynamics,2012-01-01,39(12)
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